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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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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
          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
                  Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv
                      Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv Référence: 8200329496
                      €194.51Price
                      Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv
                          Cale admission porte injecteur Twingo 2 RS y compris R1 et R2 160cv Référence: 8200329496
                          €194.51Price
                          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
                                  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
                                          En Stock
                                          €1.36 Price
                                          En Stock
                                          €1.36 Price
                                          Collier serrage inox (durite) diametre 32-50mm
                                              Collier serrage inox (durite) diametre 32-50mm Vendu à l'unité
                                              €1.36Price
                                              Collier serrage inox (durite) diametre 32-50mm
                                                  Collier serrage inox (durite) diametre 32-50mm Vendu à l'unité
                                                  €1.36Price
                                                  Interrupteur coup de poing Megane N4
                                                      Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                      €20.30Price
                                                      Interrupteur coup de poing Megane N4
                                                          Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                          €20.30Price
                                                          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
                                                                  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
                                                                          €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
                                                                                  €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
                                                                                          En Stock
                                                                                          €55.68 Price
                                                                                          En Stock
                                                                                          €55.68 Price
                                                                                          Tuyau 200-06 lg:300 connection rampe Tatuus
                                                                                              Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                                                              €55.68Price
                                                                                              Tuyau 200-06 lg:300 connection rampe Tatuus
                                                                                                  Tuyau 200-06 lg:300 connection rampe Tatuus Réference: 7711155525
                                                                                                  €55.68Price
                                                                                                  En Stock
                                                                                                  €116.83 Price
                                                                                                  En Stock
                                                                                                  €116.83 Price
                                                                                                  Genuine Renault Expansion Tank for Clio 2 RSGenuine Renault Expansion Tank for Clio 2 RS
                                                                                                      Do not risk major engine failure on your sports car. This genuine RENAULT expansion tank is the only certified part capable of maintaining the exact pressure of your cooling circuit. Specially designed for the Renault Clio 2 RS (all phases, including Jean Ragnotti, Clio RS1, RS2, 172, and 182), this coolant reservoir replaces your porous, yellowed, or...
                                                                                                      €116.83Price
                                                                                                      Genuine Renault Expansion Tank for Clio 2 RSGenuine Renault Expansion Tank for Clio 2 RS
                                                                                                          Do not risk major engine failure on your sports car. This genuine RENAULT expansion tank is the only certified part capable of maintaining the exact pressure of your cooling circuit. Specially designed for the Renault Clio 2 RS (all phases, including Jean Ragnotti, Clio RS1, RS2, 172, and 182), this coolant reservoir replaces your porous, yellowed, or...
                                                                                                          €116.83Price
                                                                                                          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
                                                                                                                  €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
                                                                                                                          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
                                                                                                                                  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
                                                                                                                                          En Stock
                                                                                                                                          €431.94 Price
                                                                                                                                          En Stock
                                                                                                                                          €431.94 Price
                                                                                                                                          Câblage additionnel commande Dash Megane N4
                                                                                                                                              Câblage additionnel commande Dash Megane N4 Référence: 7711167213
                                                                                                                                              €431.94Price
                                                                                                                                              Câblage additionnel commande Dash Megane N4
                                                                                                                                                  Câblage additionnel commande Dash Megane N4 Référence: 7711167213
                                                                                                                                                  €431.94Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €28.99 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €28.99 Price
                                                                                                                                                      Do not risk a devastating thermal meltdown or valve breakage in your top end during track days or rally stages. This genuine MPI forged exhaust valve , sold individually and designed for a direct plug-and-play replacement, protects your Renault Clio Williams cylinder head from extreme combustion temperatures. Unlike factory-cast valves that oxidize and weaken...
                                                                                                                                                      €28.99Price
                                                                                                                                                          Do not risk a devastating thermal meltdown or valve breakage in your top end during track days or rally stages. This genuine MPI forged exhaust valve , sold individually and designed for a direct plug-and-play replacement, protects your Renault Clio Williams cylinder head from extreme combustion temperatures. Unlike factory-cast valves that oxidize and weaken...
                                                                                                                                                          €28.99Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €28.99 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €28.99 Price
                                                                                                                                                              Do not risk a catastrophic engine failure on your F7R block during high-RPM driving. This genuine MPI forged intake valve , sold individually and designed for a direct drop-in replacement, is the essential safety component to protect the top end of your Renault Clio Williams . Unlike factory-cast valves that eventually fatigue under extreme thermal stress and...
                                                                                                                                                              €28.99Price
                                                                                                                                                                  Do not risk a catastrophic engine failure on your F7R block during high-RPM driving. This genuine MPI forged intake valve , sold individually and designed for a direct drop-in replacement, is the essential safety component to protect the top end of your Renault Clio Williams . Unlike factory-cast valves that eventually fatigue under extreme thermal stress and...
                                                                                                                                                                  €28.99Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €324.60 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €324.60 Price
                                                                                                                                                                      Do not risk a drastic loss of compression or excessive oil consumption during your next stage. This official Renault Sport piston ring set (designed for one piston) is the only genuine solution calibrated to maintain absolute sealing in your Clio R3 MAX engine. ...
                                                                                                                                                                      €324.60Price
                                                                                                                                                                          Do not risk a drastic loss of compression or excessive oil consumption during your next stage. This official Renault Sport piston ring set (designed for one piston) is the only genuine solution calibrated to maintain absolute sealing in your Clio R3 MAX engine. ...
                                                                                                                                                                          €324.60Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €678.06 Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €678.06 Price
                                                                                                                                                                              Do not risk a drop in compression or a major engine failure mid-stage. This official Renault Sport piston , supplied complete with its pin, is the only genuine component calibrated to restore the original performance of your Clio R3 MAX . Specifically...
                                                                                                                                                                              €678.06Price
                                                                                                                                                                                  Do not risk a drop in compression or a major engine failure mid-stage. This official Renault Sport piston , supplied complete with its pin, is the only genuine component calibrated to restore the original performance of your Clio R3 MAX . Specifically...
                                                                                                                                                                                  €678.06Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €407.03 Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €407.03 Price
                                                                                                                                                                                  New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                                                                                                                      Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                                                                                                                      €407.03Price
                                                                                                                                                                                      New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                                                                                                                          Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                                                                                                                          €407.03Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €77.12 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €77.12 Price
                                                                                                                                                                                          Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                                                                                                              Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                                                                                                              €77.12Price
                                                                                                                                                                                              Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                                                                                                                  Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                                                                                                                  €77.12Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €188.74 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €188.74 Price
                                                                                                                                                                                                  Jauge pompe Clio 2 RS 1
                                                                                                                                                                                                      Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                                                                                                      €188.74Price
                                                                                                                                                                                                      Jauge pompe Clio 2 RS 1
                                                                                                                                                                                                          Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                                                                                                          €188.74Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €272.90 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €272.90 Price