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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.

Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.

Essential Products to Maximize Engine Performance

Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:

  • Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
  • Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
  • Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
  • Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
  • Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.

Industry-Leading Benchmark Brands

We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.

Why you should Choose Optimiz Access for Your Engine Upgrades

Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.

Unleash Your Engine's Full Potential Today

Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.

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  • Categories: Circuit d'air
  • Categories: Entretien
  • Categories: Préparation intérieure
  • Categories: Suralimentation (Turbo)
En Stock
€14.89 Price
En Stock
€14.89 Price
Bouchon étanchéité aac admission
      Renault Camshaft Intake Sealing Plug – Reference 7700106271 The Renault camshaft sealing plug, reference 7700106271 , is an engine component designed to seal an opening in the cylinder head...
      €14.89Price
      Bouchon étanchéité aac admission
          Renault Camshaft Intake Sealing Plug – Reference 7700106271 The Renault camshaft sealing plug, reference 7700106271 , is an engine component designed to seal an opening in the cylinder head...
          €14.89Price
          En Stock
          €1.84 Price
          En Stock
          €1.84 Price
          Collier serrage inox (durite) diametre 50-70mmCollier serrage inox (durite) diametre 50-70mm
              Collier serrage inox (durite) diametre 50-70mm Vendu à l'unité
              €1.84Price
              Collier serrage inox (durite) diametre 50-70mmCollier serrage inox (durite) diametre 50-70mm
                  Collier serrage inox (durite) diametre 50-70mm Vendu à l'unité
                  €1.84Price
                  Collection de 3 segments pour piston Twingo RS R1 et R2 160
                      Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
                      €68.32Price
                      Collection de 3 segments pour piston Twingo RS R1 et R2 160
                          Original RENAULT Piston Ring Set for Twingo 2 RS (for 1 piston) Do not compromise the compression and power of your Twingo 2 RS engine. This original RENAULT piston...
                          €68.32Price
                          En Stock
                          €139.14 Price
                          En Stock
                          €139.14 Price
                          Piston équipé C (X82.70) Clio 3 RS
                              The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                              €139.14Price
                              Piston équipé C (X82.70) Clio 3 RS
                                  The Renault complete piston (index C) is an original part, supplied with pin and pin clips, designed for your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal engine performance and increased reliability.
                                  €139.14Price
                                  En Stock
                                  €5.66 Price
                                  En Stock
                                  €5.66 Price
                                  Vis de fixation galet enrouleur de distribution K4MVis de fixation galet enrouleur de distribution K4M
                                      Vis de fixation galet enrouleur de distribution K4M 8200581340
                                      €5.66Price
                                      Vis de fixation galet enrouleur de distribution K4MVis de fixation galet enrouleur de distribution K4M
                                          Vis de fixation galet enrouleur de distribution K4M 8200581340
                                          €5.66Price
                                          En Stock
                                          €130.37 Price
                                          En Stock
                                          €130.37 Price
                                          Capteur pression de suralimentation Megane 3 RS
                                              Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                              €130.37Price
                                              Capteur pression de suralimentation Megane 3 RS
                                                  Capteur pression de suralimentation Megane 3 RS Véritable produit d'origine
                                                  €130.37Price
                                                  Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                      Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                      €299.00Price
                                                      Dump Valve ouverte Forge Megane 4 RSDump Valve ouverte Forge Megane 4 RS
                                                          Dump Valve ouverte Forge Megane 4 RS Permet de faire le bruit de decharge du turbo fortement apprécié.
                                                          €299.00Price
                                                          En Stock
                                                          €2.08 Price
                                                          En Stock
                                                          €2.08 Price
                                                          Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
                                                              Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
                                                              €2.08Price
                                                              Collier serrage inox (durite) diametre 60-80mmCollier serrage inox (durite) diametre 60-80mm
                                                                  Collier serrage inox (durite) diametre 60-80mm Vendu à l'unité
                                                                  €2.08Price
                                                                  En Stock
                                                                  €98.33 Price
                                                                  En Stock
                                                                  €98.33 Price
                                                                  Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                      Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                      €98.33Price
                                                                      Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                          Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                          €98.33Price
                                                                          En Stock
                                                                          €202.12 Price
                                                                          En Stock
                                                                          €202.12 Price
                                                                          Isolant Tablier Clio 2 RS
                                                                              Genuine Renault Bulkhead Insulator for Clio 2 RS and Clio 2 Gr N. Reduce noise and protect your engine compartment with this high-quality insulator. Don't forget the necessary clips and fasteners for optimal installation (available at the bottom of the page).
                                                                              €202.12Price
                                                                              Isolant Tablier Clio 2 RS
                                                                                  Genuine Renault Bulkhead Insulator for Clio 2 RS and Clio 2 Gr N. Reduce noise and protect your engine compartment with this high-quality insulator. Don't forget the necessary clips and fasteners for optimal installation (available at the bottom of the page).
                                                                                  €202.12Price
                                                                                  En Stock
                                                                                  €10.03 Price
                                                                                  En Stock
                                                                                  €10.03 Price
                                                                                  Bouchon étanchéité aac échappement
                                                                                      Camshaft Exhaust End Sealing Plug – Renault The Renault camshaft sealing plug, reference 7700274026 , is an engine component designed to seal an opening in the cylinder head. It helps maintain...
                                                                                      €10.03Price
                                                                                      Bouchon étanchéité aac échappement
                                                                                          Camshaft Exhaust End Sealing Plug – Renault The Renault camshaft sealing plug, reference 7700274026 , is an engine component designed to seal an opening in the cylinder head. It helps maintain...
                                                                                          €10.03Price
                                                                                          En Stock
                                                                                          €345.64 Price
                                                                                          En Stock
                                                                                          €345.64 Price
                                                                                          Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                              Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                              €345.64Price
                                                                                              Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                  Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                  €345.64Price
                                                                                                  En Stock
                                                                                                  €1.00 Price
                                                                                                  En Stock
                                                                                                  €1.00 Price
                                                                                                  Collier serrage inox (durite) diametre 8-12mm
                                                                                                      Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                      €1.00Price
                                                                                                      Collier serrage inox (durite) diametre 8-12mm
                                                                                                          Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                                                                                          €1.00Price
                                                                                                          En Stock
                                                                                                          €4.37 Price
                                                                                                          En Stock
                                                                                                          €4.37 Price
                                                                                                          Bouchon de vidange carter d'huile moteur
                                                                                                              Bouchon de vidange carter d'huile moteur Produit compatible pour Clio 2 RS, Clio 3 RS, Megane 2 RS et Megane 3 RS
                                                                                                              €4.37Price
                                                                                                              Bouchon de vidange carter d'huile moteur
                                                                                                                  Bouchon de vidange carter d'huile moteur Produit compatible pour Clio 2 RS, Clio 3 RS, Megane 2 RS et Megane 3 RS
                                                                                                                  €4.37Price
                                                                                                                  Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                      Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                      €2.47Price
                                                                                                                      Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                          Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                          €2.47Price
                                                                                                                          En Stock
                                                                                                                          €27.31 Price
                                                                                                                          En Stock
                                                                                                                          €27.31 Price
                                                                                                                          Joint Spy Vilebrequin Twingo RS y compris R1 et  R2
                                                                                                                              Joint Spy Vilebrequin Twingo RS y compris R1 et R2 Référence: 770086072
                                                                                                                              €27.31Price
                                                                                                                              Joint Spy Vilebrequin Twingo RS y compris R1 et  R2
                                                                                                                                  Joint Spy Vilebrequin Twingo RS y compris R1 et R2 Référence: 770086072
                                                                                                                                  €27.31Price
                                                                                                                                  En Stock
                                                                                                                                  €27.47 Price
                                                                                                                                  En Stock
                                                                                                                                  €27.47 Price
                                                                                                                                  Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                                                      Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                                                      €27.47Price
                                                                                                                                      Joint de turbo sur collecteur Megane 2 RS Megane 3 RS
                                                                                                                                          Optimize your F4RT engine's sealing with this genuine RENAULT turbocharger to manifold gasket . Specifically designed for the Renault Megane 2 RS and Megane 3 RS , it is the essential component to maintain nominal boost pressure. Do not risk an exhaust leak that would degrade your performance and the...
                                                                                                                                          €27.47Price
                                                                                                                                          Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                              Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                              €45.90Price
                                                                                                                                              Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                                  Durite coudée suralimentation (arrivée turbo) Megane 3 RS
                                                                                                                                                  €45.90Price
                                                                                                                                                  En Stock
                                                                                                                                                  €132.37 €161.42 Regular price -18% off Price
                                                                                                                                                  En Stock
                                                                                                                                                  €132.37 €161.42 Regular price -18% off Price
                                                                                                                                                  Kit accessoire Clio 4 RS
                                                                                                                                                      Kit accessoire Clio 4 RS Véritable produit d'origine
                                                                                                                                                      €132.37€161.42Regular price-18% offPrice
                                                                                                                                                      Kit accessoire Clio 4 RS
                                                                                                                                                          Kit accessoire Clio 4 RS Véritable produit d'origine
                                                                                                                                                          €132.37€161.42Regular price-18% offPrice
                                                                                                                                                          Genuine factory red liquid gasket resin for engine casing and valve cover sealing, SKU: 7711237640.
                                                                                                                                                              Prevent oil weeping and critical oil pressure drops within your engine block with the Genuine Factory Resin Glue Red Liquid Gasket Compound . Specially formulated under official manufacturer part numbers 7711237640 , 7701421162 , and...
                                                                                                                                                              €33.22Price
                                                                                                                                                              Genuine factory red liquid gasket resin for engine casing and valve cover sealing, SKU: 7711237640.
                                                                                                                                                                  Prevent oil weeping and critical oil pressure drops within your engine block with the Genuine Factory Resin Glue Red Liquid Gasket Compound . Specially formulated under official manufacturer part numbers 7711237640 , 7701421162 , and...
                                                                                                                                                                  €33.22Price
                                                                                                                                                                  Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                                      Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                                      €127.86Price
                                                                                                                                                                      Dump Valve GFB DV+ - Diverter Valve Clio 4 RS - Megane 4 RS et Megane 4 GTGFB DV+ Diverter Valve - Renault Clio 4 RS / Megane 4 GT / Megane 4 RS / Alpine A110
                                                                                                                                                                          Stop losing your turbo boost! The GFB DV+ Dump Valve (Diverter Valve) is the essential upgrade for the reliability and responsiveness of your Renault Sport 1.6T and 1.8T engine (Clio 4 RS, Megane 4 GT, Megane 4 RS, Alpine A110). Retain the factory electronics...
                                                                                                                                                                          €127.86Price
                                                                                                                                                                          Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                              The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                              €35.80Price
                                                                                                                                                                              Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                  The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                                                                                                                                                  €35.80Price
                                                                                                                                                                                  Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                      Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                      €33.55Price
                                                                                                                                                                                      Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                          Gicleur Piston 1-3 Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                          €33.55Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €1.00 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €1.00 Price
                                                                                                                                                                                          Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                                                              Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                                                              €1.00Price
                                                                                                                                                                                              Collier serrage inox (durite) diametre 12-20mm
                                                                                                                                                                                                  Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                                                                                                                                  €1.00Price
                                                                                                                                                                                                  Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                                                                                                                                      This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                                                                                                                                      €195.78Price
                                                                                                                                                                                                      Sonde pression Twingo R2New Genuine Renault Sport Oil Pressure Sensor - Clio R3 & Twingo R2
                                                                                                                                                                                                          This new oil pressure sensor , from the Renault Sport competition catalog , is a vital safety part for the rally engines of the Renault Clio R3 and Twingo R2 . It is essential for monitoring lubrication and thereby preventing catastrophic engine failures caused by a lack or drop in oil pressure.
                                                                                                                                                                                                          €195.78Price
                                                                                                                                                                                                          Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                                                                                                                                                                              Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                                                                                                                                                                              €294.76Price
                                                                                                                                                                                                              Kit durites de turbo Forge Motorsport Megane 4 RSForge Motorsport Turbo Hose Kit - Renault Megane 4 RS
                                                                                                                                                                                                                  Secure your boost pressure consistency and eliminate intake charge drops with the high-performance Forge Motorsport Turbo Hose Kit for the Renault Megane 4 RS . This premium set of uprated silicone boost couplers replaces the restrictive factory rubber lines to optimize...
                                                                                                                                                                                                                  €294.76Price
                                                                                                                                                                                                                  Valve pression carter PCV Clio 4 RSGenuine Renault PCV Valve - Clio 4 RS / Mégane 4 RS & GT 205
                                                                                                                                                                                                                      Don't let a poorly managed crankcase pressure impact the health of your engine! Get the genuine Renault PCV Valve (Crankcase Pressure Valve) , an essential part for the Renault Clio 4 RS , Mégane 4 RS , or Mégane 4 GT 205 . A faulty valve leads to oil leaks and loss of...
                                                                                                                                                                                                                      €66.43Price
                                                                                                                                                                                                                      Valve pression carter PCV Clio 4 RSGenuine Renault PCV Valve - Clio 4 RS / Mégane 4 RS & GT 205
                                                                                                                                                                                                                          Don't let a poorly managed crankcase pressure impact the health of your engine! Get the genuine Renault PCV Valve (Crankcase Pressure Valve) , an essential part for the Renault Clio 4 RS , Mégane 4 RS , or Mégane 4 GT 205 . A faulty valve leads to oil leaks and loss of...
                                                                                                                                                                                                                          €66.43Price
                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                          €266.00 Price
                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                          €266.00 Price
                                                                                                                                                                                                                          Wasegate Forge Clio 4 RS
                                                                                                                                                                                                                              Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                                                                                                                                                                                                                              €266.00Price
                                                                                                                                                                                                                              Wasegate Forge Clio 4 RS
                                                                                                                                                                                                                                  Optimize your boost management with the Forge Motorsport Wastegate for Renault Clio 4 RS (reference FMACRTRCT ). This piston-actuated turbo actuator is designed to provide significantly higher pressure stability than the factory unit. Essential for...
                                                                                                                                                                                                                                  €266.00Price
                                                                                                                                                                                                                                  Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                                                                                                                                                                                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                                                                                                                                                                                                      €33.55Price
                                                                                                                                                                                                                                      Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 CupGicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup
                                                                                                                                                                                                                                          Gicleur Piston 2-4 Clio 2 RS y compris Gr N et x65 Cup  
                                                                                                                                                                                                                                          €33.55Price
                                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                                          €486.55 Price
                                                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                                                          €486.55 Price
                                                                                                                                                                                                                                          Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                                                                                                                                                                              Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                                                                                                                                                                              €486.55Price
                                                                                                                                                                                                                                              Collecteur admission Clio 2 X65 Cup et Gr N
                                                                                                                                                                                                                                                  Collecteur admission Clio 2 X65 Cup et Gr N Prévu pour papillon mécanique
                                                                                                                                                                                                                                                  €486.55Price
                                                                                                                                                                                                                                                  Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                                                                                                                      Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                                                                                                                      €37.90Price
                                                                                                                                                                                                                                                      Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                                                                                                                          Bague étanchéité vis et bouchon arbre à cames admission Twingo RS, R1 et R2
                                                                                                                                                                                                                                                          €37.90Price