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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: Préparation intérieure
Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
      Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
      €28.78Price
      Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
          Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
          €28.78Price
          Jeu de Bougies NGK PFR7ZTG
              Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
              €53.99Price
              Jeu de Bougies NGK PFR7ZTG
                  Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                  €53.99Price
                  Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                      Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                      €4.72Price
                      Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                          Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                          €4.72Price
                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                              €202.56Price
                              Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                  Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                  €202.56Price
                                  En Stock
                                  €47.34 Price
                                  En Stock
                                  €47.34 Price
                                  Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                      Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                      €47.34Price
                                      Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                          Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                          €47.34Price
                                          Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
                                              Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
                                              €150.38Price
                                              Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
                                                  Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
                                                  €150.38Price
                                                  Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                      Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                      €117.43Price
                                                      Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                          Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                          €117.43Price
                                                          Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                              The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                              €16.92Price
                                                              Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                  The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                  €16.92Price
                                                                  En Stock
                                                                  €22.74 Price
                                                                  En Stock
                                                                  €22.74 Price
                                                                  Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                      Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                      €22.74Price
                                                                      Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                          Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                          €22.74Price
                                                                          En Stock
                                                                          €81.65 Price
                                                                          En Stock
                                                                          €81.65 Price
                                                                          Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                              Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                              €81.65Price
                                                                              Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                  Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                  €81.65Price
                                                                                  En Stock
                                                                                  €83.39 Price
                                                                                  En Stock
                                                                                  €83.39 Price
                                                                                  Boitier sortie eau sans calorstat Twingo R1 R2
                                                                                      Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                                      €83.39Price
                                                                                      Boitier sortie eau sans calorstat Twingo R1 R2
                                                                                          Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                                          €83.39Price
                                                                                          Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                              Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                              €17.09Price
                                                                                              Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                  Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                  €17.09Price
                                                                                                  Collection de Ségments (X82.70)
                                                                                                      Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                                                      €37.55Price
                                                                                                      Collection de Ségments (X82.70)
                                                                                                          Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                                                          €37.55Price
                                                                                                          En Stock
                                                                                                          €50.73 €72.47 Regular price -30% off Price
                                                                                                          En Stock
                                                                                                          €50.73 €72.47 Regular price -30% off Price
                                                                                                          Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                                                                                                              Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                                                                                                              €50.73€72.47Regular price-30% offPrice
                                                                                                              Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                                                                                                                  Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                                                                                                                  €50.73€72.47Regular price-30% offPrice
                                                                                                                  En Stock
                                                                                                                  €689.93 Price
                                                                                                                  En Stock
                                                                                                                  €689.93 Price
                                                                                                                  Durite inférieure radiateur Clio 2 Rs et Cup
                                                                                                                      Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                                                                                                                      €689.93Price
                                                                                                                      Durite inférieure radiateur Clio 2 Rs et Cup
                                                                                                                          Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                                                                                                                          €689.93Price
                                                                                                                          Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                                                                                                              Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                                                                                                              €20.87Price
                                                                                                                              Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
                                                                                                                                  Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
                                                                                                                                  €20.87Price
                                                                                                                                  En Stock
                                                                                                                                  €243.60 Price
                                                                                                                                  En Stock
                                                                                                                                  €243.60 Price
                                                                                                                                  Radiateur d'eau
                                                                                                                                      Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                                      €243.60Price
                                                                                                                                      Radiateur d'eau
                                                                                                                                          Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                                          €243.60Price
                                                                                                                                          En Stock
                                                                                                                                          €15.49 Price
                                                                                                                                          En Stock
                                                                                                                                          €15.49 Price
                                                                                                                                          bague étanchéité bobine crayon
                                                                                                                                              The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                              €15.49Price
                                                                                                                                              bague étanchéité bobine crayon
                                                                                                                                                  The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                  €15.49Price
                                                                                                                                                  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
                                                                                                                                                          €1.10 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €1.10 Price
                                                                                                                                                          Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                              Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                              €1.10Price
                                                                                                                                                              Collier serrage inox (durite) diametre 20-32mm
                                                                                                                                                                  Collier serrage inox (durite) diametre 20-32mm Vendu à l'unité
                                                                                                                                                                  €1.10Price
                                                                                                                                                                  Durite Sortie radiateur de chauffage Twingo RS R1 et R2
                                                                                                                                                                      Durite Sortie radiateur de chauffage Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                                                      €38.53Price
                                                                                                                                                                      Durite Sortie radiateur de chauffage Twingo RS R1 et R2
                                                                                                                                                                          Durite Sortie radiateur de chauffage Twingo RS R1 et R2 Véritable produit d'origine
                                                                                                                                                                          €38.53Price
                                                                                                                                                                          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
                                                                                                                                                                                  €82.24 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €82.24 Price
                                                                                                                                                                                  Calorstat Megane 3 RS
                                                                                                                                                                                      Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                                                                                                                                      €82.24Price
                                                                                                                                                                                      Calorstat Megane 3 RS
                                                                                                                                                                                          Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                                                                                                                                          €82.24Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €1.30 Price
                                                                                                                                                                                          En Stock
                                                                                                                                                                                          €1.30 Price
                                                                                                                                                                                          Collier serrage inox (durite) diametre 25-40mm
                                                                                                                                                                                              Collier serrage inox (durite) diametre 25-40mm Vendu à l'unité
                                                                                                                                                                                              €1.30Price
                                                                                                                                                                                              Collier serrage inox (durite) diametre 25-40mm
                                                                                                                                                                                                  Collier serrage inox (durite) diametre 25-40mm Vendu à l'unité
                                                                                                                                                                                                  €1.30Price
                                                                                                                                                                                                  Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                                                                                                                                                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                                                                                                                                                      €89.65Price
                                                                                                                                                                                                      Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                                                                                                                                                          Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                                                                                                                                                          €89.65Price
                                                                                                                                                                                                          NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                                                                                                                                                              Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                                                                                                                                                              €26.77Price
                                                                                                                                                                                                              NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                                                                                                                                                                  Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                                                                                                                                                                  €26.77Price
                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                  €1.37 Price
                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                  €1.37 Price
                                                                                                                                                                                                                  Collier serrage inox (durite) diametre 30-45mm
                                                                                                                                                                                                                      Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                                                                                                                                                                      €1.37Price
                                                                                                                                                                                                                      Collier serrage inox (durite) diametre 30-45mm
                                                                                                                                                                                                                          Collier serrage inox (durite) diametre 30-45mm Vendu à l'unité
                                                                                                                                                                                                                          €1.37Price
                                                                                                                                                                                                                          RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                                                                                                                                                                                                                              Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                                                                                                                                                                                                                              €8,104.62Price
                                                                                                                                                                                                                              RENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hpRENAULT SPORT Assembled Cylinder Head - Renault Twingo R2 EVO 195hp
                                                                                                                                                                                                                                  Optimize the performance of your Renault Twingo R2 EVO 195hp with this genuine RENAULT SPORT assembled cylinder head (ref. 7711167644). Supplied with valves, retainers, valve springs, rocker arms, and pushrods, this cylinder head is ready to be installed (camshafts not included). Guaranteed performance and reliability.
                                                                                                                                                                                                                                  €8,104.62Price
                                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                                  €24.00 €30.00 Regular price -20% off Price
                                                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                                                  €24.00 €30.00 Regular price -20% off Price
                                                                                                                                                                                                                                  Jeu de Bougies Renault Clio Williams
                                                                                                                                                                                                                                      Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                                                                                                                                                                                                                                      €24.00€30.00Regular price-20% offPrice
                                                                                                                                                                                                                                      Jeu de Bougies Renault Clio Williams
                                                                                                                                                                                                                                          Jeu de Bougies Renault Clio Williams Véritable produit d'origine
                                                                                                                                                                                                                                          €24.00€30.00Regular price-20% offPrice