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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.

Active filters

  • Categories: Alimentation
  • Categories: Circuit d'eau
  • Categories: Entretien
En Stock
€110.08 Price
En Stock
€110.08 Price
Galet tendeur accessoire Clio 3 RS - Megane 3 RS
      Galet tendeur accessoire Megane 3 RS Véritable produit d'origine
      €110.08Price
      Galet tendeur accessoire Clio 3 RS - Megane 3 RS
          Galet tendeur accessoire Megane 3 RS Véritable produit d'origine
          €110.08Price
          En Stock
          €69.56 Price
          En Stock
          €69.56 Price
          Flexible à carburant Té / rampe Clio 3 Cup
              Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
              €69.56Price
              Flexible à carburant Té / rampe Clio 3 Cup
                  Do not risk a fuel system failure mid-session. The Goodridge Tee to fuel rail hose is crucial for the reliability of your Clio 3 x85 Cup . Keeping a worn or inadequate hose directly exposes your engine to critical fuel starvation or severe leak risks. Permanently secure your injection system with this high-precision...
                  €69.56Price
                  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
                          Banjo alimentation rampe essence Twingo R1 et R2 et Clio R3
                              Banjo alimentation rampe essence Twingo R1 et R2 et Clio R3 Référence: 7711160198
                              €57.72Price
                              Banjo alimentation rampe essence Twingo R1 et R2 et Clio R3
                                  Banjo alimentation rampe essence Twingo R1 et R2 et Clio R3 Référence: 7711160198
                                  €57.72Price
                                  Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110
                                      Preserve your engine's integrity with this genuine Renault oil filter . Specifically engineered for the high-performance engines found in the Renault Clio 4 RS (1.6 Turbo), Renault Megane 4 RS , and Alpine A110 (1.8 Turbo), this filter guarantees optimal removal of impurities. ...
                                      €11.34Price
                                      Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110
                                          Preserve your engine's integrity with this genuine Renault oil filter . Specifically engineered for the high-performance engines found in the Renault Clio 4 RS (1.6 Turbo), Renault Megane 4 RS , and Alpine A110 (1.8 Turbo), this filter guarantees optimal removal of impurities. ...
                                          €11.34Price
                                          Kit joints spy et ecrous poulies arbre à cames Megane 2 RS
                                              Kit joints spy et ecrous poulies arbre à cames Megane 2 RS Véritable produit d'origine
                                              €49.33Price
                                              Kit joints spy et ecrous poulies arbre à cames Megane 2 RS
                                                  Kit joints spy et ecrous poulies arbre à cames Megane 2 RS Véritable produit d'origine
                                                  €49.33Price
                                                  Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                      Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                      €2.47Price
                                                      Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                          Joint de sonde de temperature d'eau Clio 2 RS y compris Gr N et X65 Cup
                                                          €2.47Price
                                                          En Stock
                                                          €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
                                                                  Sur commande ou en cours de réappro
                                                                  €24.71 Price
                                                                  Sur commande ou en cours de réappro
                                                                  €24.71 Price
                                                                  Genuine NISSAN Oil Filter for NISSAN GTR R35Genuine NISSAN Oil Filter for NISSAN GTR R35
                                                                      Do not compromise the lubrication of your VR38DETT engine. This genuine Nissan oil filter is the only component certified by the manufacturer to ensure constant oil pressure and optimal filtration of impurities. Essential for every engine oil change , it preserves the longevity of your Nissan GTR R35 , whether for daily...
                                                                      €24.71Price
                                                                      Genuine NISSAN Oil Filter for NISSAN GTR R35Genuine NISSAN Oil Filter for NISSAN GTR R35
                                                                          Do not compromise the lubrication of your VR38DETT engine. This genuine Nissan oil filter is the only component certified by the manufacturer to ensure constant oil pressure and optimal filtration of impurities. Essential for every engine oil change , it preserves the longevity of your Nissan GTR R35 , whether for daily...
                                                                          €24.71Price
                                                                          Sur commande ou en cours de réappro
                                                                          €8.24 €20.59 Regular price -60% off Price
                                                                          Sur commande ou en cours de réappro
                                                                          €8.24 €20.59 Regular price -60% off Price
                                                                          16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS
                                                                              Do not risk a costly engine failure during your next track day. This 16mm diameter core plug is an essential engine safety component for all Renault Sport F4R blocks. Whether for the timing side or the left of the oil filter , this engine block expansion plug ensures a perfect seal and prevents coolant leaks under high...
                                                                              €8.24€20.59Regular price-60% offPrice
                                                                              16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS
                                                                                  Do not risk a costly engine failure during your next track day. This 16mm diameter core plug is an essential engine safety component for all Renault Sport F4R blocks. Whether for the timing side or the left of the oil filter , this engine block expansion plug ensures a perfect seal and prevents coolant leaks under high...
                                                                                  €8.24€20.59Regular price-60% offPrice
                                                                                  Sur commande ou en cours de réappro
                                                                                  €74.52 Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €74.52 Price
                                                                                  Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)
                                                                                      Do not risk the destruction of your F4R engine ! This Additional Timing Belt Protection Plate is essential for the Renault Clio 3 RS , Mégane 2 RS , and Mégane 3 RS . It offers crucial mechanical safety , protecting the timing belt from...
                                                                                      €74.52Price
                                                                                      Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)
                                                                                          Do not risk the destruction of your F4R engine ! This Additional Timing Belt Protection Plate is essential for the Renault Clio 3 RS , Mégane 2 RS , and Mégane 3 RS . It offers crucial mechanical safety , protecting the timing belt from...
                                                                                          €74.52Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €79.00 Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €79.00 Price
                                                                                          Additional Timing Belt Protection Plate - Clio 2 RS (F4R)Additional Timing Belt Protection Plate - Clio 2 RS (F4R)
                                                                                              Do not take the risk of a devastating engine failure ! This Additional Timing Belt Protection Plate is the essential element to secure the timing belt of your Renault Clio 2 RS (F4R engine). It provides vital protection against stone chips and debris, including...
                                                                                              €79.00Price
                                                                                              Additional Timing Belt Protection Plate - Clio 2 RS (F4R)Additional Timing Belt Protection Plate - Clio 2 RS (F4R)
                                                                                                  Do not take the risk of a devastating engine failure ! This Additional Timing Belt Protection Plate is the essential element to secure the timing belt of your Renault Clio 2 RS (F4R engine). It provides vital protection against stone chips and debris, including...
                                                                                                  €79.00Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €35.10 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €35.10 Price
                                                                                                  Genuine Renault Engine Oil Filler Cap for Clio 2/3 RS, Twingo 2 RS
                                                                                                      Preserve the performance of your Renault Clio 2 RS , Renault Clio 3 RS , or Renault Twingo 2 RS with this genuine RENAULT engine oil filler cap . An essential part to maintain the tightness and cleanliness of your engine. Find complementary products for the maintenance of your sports car at the bottom of the page.
                                                                                                      €35.10Price
                                                                                                      Genuine Renault Engine Oil Filler Cap for Clio 2/3 RS, Twingo 2 RS
                                                                                                          Preserve the performance of your Renault Clio 2 RS , Renault Clio 3 RS , or Renault Twingo 2 RS with this genuine RENAULT engine oil filler cap . An essential part to maintain the tightness and cleanliness of your engine. Find complementary products for the maintenance of your sports car at the bottom of the page.
                                                                                                          €35.10Price
                                                                                                          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
                                                                                                                          €20.56 Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €20.56 Price
                                                                                                                          Bouchon de poulie de dephasage Clio 2 RSBouchon de poulie de dephasage Clio 2 RS
                                                                                                                              Bouchon de poulie de dephasage Clio 2 RS
                                                                                                                              €20.56Price
                                                                                                                              Bouchon de poulie de dephasage Clio 2 RSBouchon de poulie de dephasage Clio 2 RS
                                                                                                                                  Bouchon de poulie de dephasage Clio 2 RS
                                                                                                                                  €20.56Price
                                                                                                                                  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
                                                                                                                                          €9.30 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €9.30 Price
                                                                                                                                          Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                              Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                              €9.30Price
                                                                                                                                              Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                  Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                  €9.30Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €272.90 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €272.90 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €14.20 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €14.20 Price
                                                                                                                                                  Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                      Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                      €14.20Price
                                                                                                                                                      Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                          Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                          €14.20Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €309.00 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €309.00 Price
                                                                                                                                                          Complete Silicone Coolant Hose Kit Renault Mégane 2 RSComplete Silicone Coolant Hose Kit Renault Mégane 2 RS
                                                                                                                                                              Complete Silicone Coolant Hose Kit – Renault Mégane 2 RS Complete silicone coolant hose kit designed for compatible Renault Mégane 2 RS models. The kit is intended to replace the corresponding hoses in the engine cooling system. Check the engine version and cooling system configuration before ordering.
                                                                                                                                                              €309.00Price
                                                                                                                                                              Complete Silicone Coolant Hose Kit Renault Mégane 2 RSComplete Silicone Coolant Hose Kit Renault Mégane 2 RS
                                                                                                                                                                  Complete Silicone Coolant Hose Kit – Renault Mégane 2 RS Complete silicone coolant hose kit designed for compatible Renault Mégane 2 RS models. The kit is intended to replace the corresponding hoses in the engine cooling system. Check the engine version and cooling system configuration before ordering.
                                                                                                                                                                  €309.00Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €24.00 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €24.00 Price
                                                                                                                                                                      Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                                                      €24.00Price
                                                                                                                                                                          Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                                                          €24.00Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €44.21 Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €44.21 Price
                                                                                                                                                                          Genuine factory anti-snap steel metal engine oil level dipstick for Renault Megane 2 RS and Clio 3 RS.
                                                                                                                                                                              Do not risk irreversible engine failure due to poor lubrication, inaccurate oil level readings, or plastic fragments breaking off inside your oil pan. The genuine metal oil dipstick for the Renault Megane 2 RS and Clio 3 RS is the definitive solution to replace the fragile...
                                                                                                                                                                              €44.21Price
                                                                                                                                                                              Genuine factory anti-snap steel metal engine oil level dipstick for Renault Megane 2 RS and Clio 3 RS.
                                                                                                                                                                                  Do not risk irreversible engine failure due to poor lubrication, inaccurate oil level readings, or plastic fragments breaking off inside your oil pan. The genuine metal oil dipstick for the Renault Megane 2 RS and Clio 3 RS is the definitive solution to replace the fragile...
                                                                                                                                                                                  €44.21Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €905.99 Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €905.99 Price
                                                                                                                                                                                  Tonnelet 60L Motul 300V 15W50
                                                                                                                                                                                      Tonnelet 60L Motul 300V 15W50 MEILLEURE FIABILITÉ <a class="acc-header active" href="https://www.motul.com/fr/fr/landings/new-300v#"...
                                                                                                                                                                                      €905.99Price
                                                                                                                                                                                      Tonnelet 60L Motul 300V 15W50
                                                                                                                                                                                          Tonnelet 60L Motul 300V 15W50 MEILLEURE FIABILITÉ <a class="acc-header active" href="https://www.motul.com/fr/fr/landings/new-300v#"...
                                                                                                                                                                                          €905.99Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €117.79 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €117.79 Price
                                                                                                                                                                                              Capteur température d'eau Clio 4 RS Capteur se positionnant sur le boitier de sortie d'eau de la culasse
                                                                                                                                                                                              €117.79Price
                                                                                                                                                                                                  Capteur température d'eau Clio 4 RS Capteur se positionnant sur le boitier de sortie d'eau de la culasse
                                                                                                                                                                                                  €117.79Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €160.52 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €160.52 Price
                                                                                                                                                                                                  Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                                                                                                      Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                                                                                                      €160.52Price
                                                                                                                                                                                                      Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                                                                                                          Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                                                                                                          €160.52Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €12.60 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €12.60 Price
                                                                                                                                                                                                          Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                                                              Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                                                              €12.60Price
                                                                                                                                                                                                              Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                                                                  Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                                                                  €12.60Price