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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: Alimentation
  • Categories: Kit Allègement
  • Categories: Préparation intérieure
  • Categories: Support moteur
Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
      Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
      €7.80Price
      Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
          Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
          €7.80Price
          En Stock
          €66.48 Price
          En Stock
          €66.48 Price
          Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
              Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
              €66.48Price
              Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                  Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                  €66.48Price
                  En Stock
                  €122.62 Price
                  En Stock
                  €122.62 Price
                  Batterie sèche 12V-24Ah
                      Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                      €122.62Price
                      Batterie sèche 12V-24Ah
                          Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                          €122.62Price
                          Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                              Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                              €43.51Price
                              Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                  Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                  €43.51Price
                                  DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                      Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                      €224.09Price
                                      DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                          Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                          €224.09Price
                                          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
                                                  En Stock
                                                  €198.25 Price
                                                  En Stock
                                                  €198.25 Price
                                                  Kit Joint Refection moteur Origine Clio 3 RS
                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                      €198.25Price
                                                      Kit Joint Refection moteur Origine Clio 3 RS
                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                          €198.25Price
                                                          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
                                                                  €224.35 Price
                                                                  En Stock
                                                                  €224.35 Price
                                                                  Kit Joint Refection moteur Origine Clio 2 RS
                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                      €224.35Price
                                                                      Kit Joint Refection moteur Origine Clio 2 RS
                                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                          €224.35Price
                                                                          Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                              Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                              €55.88Price
                                                                              Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                                                                  Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                                                                  €55.88Price
                                                                                  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
                                                                                          Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                                              Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                                              €138.05Price
                                                                                              Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                                                                                  Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                                                                                  €138.05Price
                                                                                                  Collection de 48 grains de réglage soupapes Twingo R2 195-205
                                                                                                      Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                                                                                                      €831.29Price
                                                                                                      Collection de 48 grains de réglage soupapes Twingo R2 195-205
                                                                                                          Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                                                                                                          €831.29Price
                                                                                                          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
                                                                                                                  Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                      Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                      €146.16Price
                                                                                                                      Tuyau carburant entre coupling Goodridge et rampe Megane N4
                                                                                                                          Tuyau carburant entre coupling Goodridge et rampe Megane N4 Référence: 7711167090
                                                                                                                          €146.16Price
                                                                                                                          En Stock
                                                                                                                          €119.28 Price
                                                                                                                          En Stock
                                                                                                                          €119.28 Price
                                                                                                                          Capteur pédale accélérateur Clio 3 RS
                                                                                                                              Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                                                              €119.28Price
                                                                                                                              Capteur pédale accélérateur Clio 3 RS
                                                                                                                                  Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                                                                  €119.28Price
                                                                                                                                  Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                      €41.95Price
                                                                                                                                      Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                          Bague étanchéité arbre à cames échappement Twingo RS, R1 et R2
                                                                                                                                          €41.95Price
                                                                                                                                          Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                                              €173.57Price
                                                                                                                                              Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                                                                  €173.57Price
                                                                                                                                                  Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                      €4.16Price
                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                          Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                          €4.16Price
                                                                                                                                                          En Stock
                                                                                                                                                          €133.56 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €133.56 Price
                                                                                                                                                          Piston équipé indice B (X82.70) Clio 3 RS et X85 Cup
                                                                                                                                                              Piston équipé indice B (X=82.70) Clio 3 RS et X85 Cup Piston d'origine
                                                                                                                                                              €133.56Price
                                                                                                                                                              Piston équipé indice B (X82.70) Clio 3 RS et X85 Cup
                                                                                                                                                                  Piston équipé indice B (X=82.70) Clio 3 RS et X85 Cup Piston d'origine
                                                                                                                                                                  €133.56Price
                                                                                                                                                                  Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2
                                                                                                                                                                      Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2 Référence: 7711050937
                                                                                                                                                                      €3.04Price
                                                                                                                                                                      Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2
                                                                                                                                                                          Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2 Référence: 7711050937
                                                                                                                                                                          €3.04Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €546.20 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €546.20 Price
                                                                                                                                                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                                              €546.20Price
                                                                                                                                                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                                                  €546.20Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €396.19 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €396.19 Price
                                                                                                                                                                                  Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                                                                                                                                                                      The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                                                                                                                                                                      €396.19Price
                                                                                                                                                                                      Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                                                                                                                                                                          The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                                                                                                                                                                          €396.19Price