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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: Circuit d'eau
En Stock
€50.73 €72.47 Regular price -30% off Price
En Stock
€50.73 €72.47 Regular price -30% off Price
Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
      Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
      €50.73€72.47Regular price-30% offPrice
      Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
          Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
          €50.73€72.47Regular price-30% offPrice
          En Stock
          €689.93 Price
          En Stock
          €689.93 Price
          Durite inférieure radiateur Clio 2 Rs et Cup
              Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
              €689.93Price
              Durite inférieure radiateur Clio 2 Rs et Cup
                  Durite inférieure radiateur Clio 2 Cup Référence: 7711155360
                  €689.93Price
                  Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                      Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                      €28.78Price
                      Bouchon Vase Expansion 1.4 BarGenuine Renault Expansion Tank Cap 1.4 Bar - Super 5 GT Turbo / Clio 16S / Williams / R21 Turbo
                          Safeguard your cooling system with this genuine Renault expansion tank cap rated at 1.4 Bar . Specifically engineered for legendary performance models such as the Renault Super 5 GT Turbo , Clio Williams , and R21 2L Turbo , it ensures optimal pressure regulation to prevent engine overheating. A vital precision...
                          €28.78Price
                          Durites de Reniflard et Wasegate Megane 2 RS
                              Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                              €82.00Price
                              Durites de Reniflard et Wasegate Megane 2 RS
                                  Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                  €82.00Price
                                  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
                                          En Stock
                                          €221.33 Price
                                          En Stock
                                          €221.33 Price
                                          Radiator Outlet Water Hose Renault Megane 3 RSRadiator Outlet Water Hose Renault Megane 3 RS
                                              Genuine Renault Radiator Outlet Water Hose for Renault Megane 3 RS. Essential part for optimal engine cooling. Renault quality and reliability.
                                              €221.33Price
                                              Radiator Outlet Water Hose Renault Megane 3 RSRadiator Outlet Water Hose Renault Megane 3 RS
                                                  Genuine Renault Radiator Outlet Water Hose for Renault Megane 3 RS. Essential part for optimal engine cooling. Renault quality and reliability.
                                                  €221.33Price
                                                  En Stock
                                                  €37.52 Price
                                                  En Stock
                                                  €37.52 Price
                                                  Raccord 90° de rampe d'injection Clio Gr N
                                                      Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                      €37.52Price
                                                      Raccord 90° de rampe d'injection Clio Gr N
                                                          Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                          €37.52Price
                                                          En Stock
                                                          €84.00 Price
                                                          En Stock
                                                          €84.00 Price
                                                          Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                              Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                              €84.00Price
                                                              Original RENAULT Injector for Megane 3 RSOriginal RENAULT Injector for Megane 3 RS
                                                                  Don't let your Renault Megane 3 RS lose its vigor! This original RENAULT injector is essential for maintaining your engine's optimal performance. Avoid excessive fuel consumption and a drop in power by choosing the quality and reliability of a part specifically designed for your sports vehicle. You can find associated complementary products (notably the...
                                                                  €84.00Price
                                                                  En Stock
                                                                  €83.39 Price
                                                                  En Stock
                                                                  €83.39 Price
                                                                  Boitier sortie eau sans calorstat Twingo R1 R2
                                                                      Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                      €83.39Price
                                                                      Boitier sortie eau sans calorstat Twingo R1 R2
                                                                          Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                          €83.39Price
                                                                          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
                                                                                  Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                      Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                      €36.80Price
                                                                                      Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                          Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                          €36.80Price
                                                                                          En Stock
                                                                                          €105.52 Price
                                                                                          En Stock
                                                                                          €105.52 Price
                                                                                          Pompe à eau K4M Twingo Rs R1 et R2
                                                                                              Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                                                                              €105.52Price
                                                                                              Pompe à eau K4M Twingo Rs R1 et R2
                                                                                                  Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                                                                                  €105.52Price
                                                                                                  En Stock
                                                                                                  €178.04 Price
                                                                                                  En Stock
                                                                                                  €178.04 Price
                                                                                                  Pompe à Essence Clio 2 RS et X65 Cup
                                                                                                      Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                                      €178.04Price
                                                                                                      Pompe à Essence Clio 2 RS et X65 Cup
                                                                                                          Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                                                                                                          €178.04Price
                                                                                                          En Stock
                                                                                                          €22.74 Price
                                                                                                          En Stock
                                                                                                          €22.74 Price
                                                                                                          Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                              Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                              €22.74Price
                                                                                                              Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                                                                                  Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                                                                                  €22.74Price
                                                                                                                  Raccord Pompe à essence Clio GrN
                                                                                                                      Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                                                                                                      €50.45Price
                                                                                                                      Raccord Pompe à essence Clio GrN
                                                                                                                          Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                                                                                                          €50.45Price
                                                                                                                          Durite modine/radiateur Clio 2 Cup
                                                                                                                              The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                              €77.62Price
                                                                                                                              Durite modine/radiateur Clio 2 Cup
                                                                                                                                  The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                                                                                                                  €77.62Price
                                                                                                                                  En Stock
                                                                                                                                  €279.71 Price
                                                                                                                                  En Stock
                                                                                                                                  €279.71 Price
                                                                                                                                  Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                                                                                                      Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                                                                                                      €279.71Price
                                                                                                                                      Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                                                                                                          Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                                                                                                          €279.71Price
                                                                                                                                          Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                                                              Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                                                              €117.43Price
                                                                                                                                              Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                                                                  Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                                                                  €117.43Price
                                                                                                                                                  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