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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: Préparation intérieure
  • Categories: Refroidissement
  • Categories: Suralimentation (Turbo)
En Stock
€174.00 Price
En Stock
€174.00 Price
Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
      €174.00Price
      Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
          €174.00Price
          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
                  En Stock
                  €66.48 Price
                  En Stock
                  €66.48 Price
                  Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                      Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                      €66.48Price
                      Coussinets de Vilebrequin Trimetal ergotés ACLCoussinets de Vilebrequin Trimetal ergotés ACL
                          Coussinet de vilebrequin trimetal Coussinets pour F7P, F7R, F4R, F4R soit pour Clio 16S, Williams, clio 2 RS, Clio 3 RS, Megane 2 RS, Megane 3 RS Présence d'ergots.
                          €66.48Price
                          En Stock
                          €70.25 Price
                          En Stock
                          €70.25 Price
                          Blue Crankshaft Half-Bearing Set
                              Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                              €70.25Price
                              Blue Crankshaft Half-Bearing Set
                                  Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                  €70.25Price
                                  Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                      Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                      €230.39Price
                                      Reinforced silicone intercooler boost hose kit Forge Motorsport FMKTRC for Renault Clio 4 RS. black
                                          Prevent boost pressure leaks and protect your intake system with the premium Forge Motorsport Silicon Turbo Hose Kit FMKTRC for Clio 4 RS . Manufactured from high-tensile, multi-layer reinforced silicone, this kit directly replaces factory rubber lines that are prone to...
                                          €230.39Price
                                          En Stock
                                          €1,326.07 Price
                                          En Stock
                                          €1,326.07 Price
                                          AAC Admission loi 286TR2A2 Twingo R2 205
                                              AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                              €1,326.07Price
                                              AAC Admission loi 286TR2A2 Twingo R2 205
                                                  AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                  €1,326.07Price
                                                  Dispo selon configuration
                                                  €169.00 €209.02 Regular price -€40.02 off Price
                                                  Dispo selon configuration
                                                  €169.00 €209.02 Regular price -€40.02 off Price
                                                  COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                                    • Pack
                                                    Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                                    €169.00€209.02Regular price-€40.02 offPrice
                                                    COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                                                      • Pack
                                                      Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                                                      €169.00€209.02Regular price-€40.02 offPrice
                                                      Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                          The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                          €16.92Price
                                                          Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                              The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                              €16.92Price
                                                              En Stock
                                                              €66.99 Price
                                                              En Stock
                                                              €66.99 Price
                                                              Injecteur Clio 3 RS et X85 Cup
                                                                  The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                  €66.99Price
                                                                  Injecteur Clio 3 RS et X85 Cup
                                                                      The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                      €66.99Price
                                                                      En Stock
                                                                      €50.86 Price
                                                                      En Stock
                                                                      €50.86 Price
                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                          €50.86Price
                                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                              Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                              €50.86Price
                                                                              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
                                                                                      DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                          Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                          €224.09Price
                                                                                          DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                                                              Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                                                              €224.09Price
                                                                                              En Stock
                                                                                              €251.47 Price
                                                                                              En Stock
                                                                                              €251.47 Price
                                                                                              Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                                                                  Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                                                                  €251.47Price
                                                                                                  Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                                                                      Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                                                                      €251.47Price
                                                                                                      En Stock
                                                                                                      €150.77 Price
                                                                                                      En Stock
                                                                                                      €150.77 Price
                                                                                                      Bride de turbo Megane N4
                                                                                                          Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                          €150.77Price
                                                                                                          Bride de turbo Megane N4
                                                                                                              Official Renault Megane N4 Rally Turbo Flange (Ref: 7711167131) : Original part, guaranteeing performance and reliability for your Renault Megane 3 RS prepared for competition. Don't let an unsuitable flange compromise your turbo's potential. Discover related products, including the O-ring, at the bottom of this page.
                                                                                                              €150.77Price
                                                                                                              En Stock
                                                                                                              €47.34 Price
                                                                                                              En Stock
                                                                                                              €47.34 Price
                                                                                                              Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                                                                                                  Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                                                                                                  €47.34Price
                                                                                                                  Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2Genuine Renault Exhaust Valve Twingo 2 RS/R1/R2
                                                                                                                      Genuine Renault Exhaust Valve - Twingo 2 RS, Twingo R1, Twingo R2 160hp Authentic Renault exhaust valve, ensuring optimal sealing and performance. Specific replacement part for Renault Twingo 2 RS, Twingo R1, and Twingo R2 160hp models. Contributes to proper engine operation and efficient exhaust gas...
                                                                                                                      €47.34Price
                                                                                                                      Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                                                                                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                                                                                          €0.23Price
                                                                                                                          Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65
                                                                                                                              Joint trama capteur pression huile Ø8.4x13.8 Clio 2 Cup X65 Référence : 7711065381
                                                                                                                              €0.23Price
                                                                                                                              Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                  Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                  €17.09Price
                                                                                                                                  Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                      Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                      €17.09Price
                                                                                                                                      Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                          Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                          €202.56Price
                                                                                                                                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                              €202.56Price
                                                                                                                                              En Stock
                                                                                                                                              €133.31 Price
                                                                                                                                              En Stock
                                                                                                                                              €133.31 Price
                                                                                                                                              Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                  €133.31Price
                                                                                                                                                  Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                                      €133.31Price
                                                                                                                                                      En Stock
                                                                                                                                                      €81.65 Price
                                                                                                                                                      En Stock
                                                                                                                                                      €81.65 Price
                                                                                                                                                      Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                                                                                          Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                                                                                          €81.65Price
                                                                                                                                                          Bielle Twingo RS R1 et R2 160Bielle Twingo RS R1 et R2 160
                                                                                                                                                              Connecting Rod for Twingo RS R1 and R2 160: Enhance the durability and performance of your engine with this robust connecting rod, designed for extreme conditions and easy installation.
                                                                                                                                                              €81.65Price
                                                                                                                                                              Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                                                                                  Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                                                                                  €265.93Price
                                                                                                                                                                  Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                                                                                      Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                                                                                      €265.93Price
                                                                                                                                                                      Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                                                                                                        • Pack
                                                                                                                                                                        Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                                                                                                        €269.74Price
                                                                                                                                                                        Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                                                                                                          • Pack
                                                                                                                                                                          Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                                                                                                          €269.74Price
                                                                                                                                                                          Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                                                                                                                                                                              Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                                                                                                                                                                              €241.00Price
                                                                                                                                                                              Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                                                                                                                                                                                  Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                                                                                                                                                                                  €241.00Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €211.80 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €211.80 Price
                                                                                                                                                                                  Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                                                                                                                                                                      Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                                                                                                                                                                      €211.80Price
                                                                                                                                                                                      Pompe à huileRenault Sport Oil Pump - Clio 2/3 RS & Megane 2/3 RS
                                                                                                                                                                                          Secure your engine block's lubrication with this high-performance oil pump for Renault 2.0L engines. Essential for maintaining constant oil pressure, it is compatible with Clio 2 RS , Clio 3 RS , as well as X65 Cup ,...
                                                                                                                                                                                          €211.80Price
                                                                                                                                                                                          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
                                                                                                                                                                                                  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