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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: Suralimentation (Turbo)
Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
      Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
      €20.87Price
      Joint spy Vilebrequin côté distribution R21 turboRenault Crankshaft Oil Seal, Timing Side - Formula Renault / Renault 21 2L Turbo
          Renault Crankshaft Oil Seal, Timing Side - Formula Renault / R21 2L Turbo Ensure your engine's sealing with this original Renault crankshaft oil seal. Designed for Formula Renault and Renault 21 2L Turbo, it prevents oil leaks and guarantees your engine's longevity. Original Renault Part Crankshaft oil seal, timing side ...
          €20.87Price
          Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
              Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
              €4.72Price
              Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                  Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                  €4.72Price
                  En Stock
                  €790.00 Price
                  En Stock
                  €790.00 Price
                  Echangeur Wagner Megane 3 RSEchangeur Wagner Megane 3 RS
                      Wagner Tuning Intercooler for Renault Mégane 3 RS: Boost your sports car's performance with this high-performance intercooler. Designed to efficiently cool the turbocharged air, it enhances your engine's power, torque, and reliability, while also giving your vehicle a sportier look.
                      €790.00Price
                      Echangeur Wagner Megane 3 RSEchangeur Wagner Megane 3 RS
                          Wagner Tuning Intercooler for Renault Mégane 3 RS: Boost your sports car's performance with this high-performance intercooler. Designed to efficiently cool the turbocharged air, it enhances your engine's power, torque, and reliability, while also giving your vehicle a sportier look.
                          €790.00Price
                          Collection de Ségments (X82.70)
                              Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                              €37.55Price
                              Collection de Ségments (X82.70)
                                  Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                  €37.55Price
                                  Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                      The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                      €191.53Price
                                      Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                          The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                          €191.53Price
                                          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
                                                  Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                      €33.94Price
                                                      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                          Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                                                          €33.94Price
                                                          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
                                                                  Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                                                                      Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                                                                      €261.86Price
                                                                      Dump Valve Megane 3 RS avec Kit de montageDump Valve Megane 3 RS avec Kit de montage
                                                                          Kit Dump Valve Forge. Circuit ouvert. Ce mode de fonctionnement est reconnaissable au PSSCHHIIIITTT qui se laisse entendre lors du changement de rapport Le kit Comprend, la Dump Valve, 2 colliers, un raccord inox, et un tube coudé et le bouchon nécessaire à boucher le trou lors de la suppression de la dump valve d'origine (pas present dans tous les kits que l'on trouve sur le net). Idéal sur...
                                                                          €261.86Price
                                                                          En Stock
                                                                          €3.16 Price
                                                                          En Stock
                                                                          €3.16 Price
                                                                          Clip maintien support linguet Twingo R2 195/205
                                                                              Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                              €3.16Price
                                                                              Clip maintien support linguet Twingo R2 195/205
                                                                                  Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                                  €3.16Price
                                                                                  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
                                                                                          Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                              Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                              €14.95Price
                                                                                              Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                  Ressort de soupapes Clio 3 RS y compris X85 Cup et R3 Max 230 - Megane 3 RS
                                                                                                  €14.95Price
                                                                                                  En Stock
                                                                                                  €122.00 Price
                                                                                                  En Stock
                                                                                                  €122.00 Price
                                                                                                  ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                      Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                      €122.00Price
                                                                                                      ARP Uprated Rod Bolts | Renault Clio & Megane RS
                                                                                                          Protect your bottom end assembly against high-RPM failure with this premium Uprated ARP Rod Bolts Kit for Renault Clio 16S, Williams, Clio 2 3 RS, and Megane 2 3 RS , commercialized under the international part number ARP-216-6301 . Forged from premium ARP...
                                                                                                          €122.00Price
                                                                                                          En Stock
                                                                                                          €174.00 Price
                                                                                                          En Stock
                                                                                                          €174.00 Price
                                                                                                          Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 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 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 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
                                                                                                                          €133.39 Price
                                                                                                                          En Stock
                                                                                                                          €133.39 Price
                                                                                                                          Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                                                                                                              Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                              €133.39Price
                                                                                                                              Joint de Culasse Cometic Clio 16S /WilliamsJoint de Culasse Cometic Clio 16S /Williams
                                                                                                                                  Joint de culasse Cometic. Haute résistance. Alesage 83 mm , Epaisseur 0.76 Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. Nous contacter pour connaitre les épaisseurs possibles D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                                  €133.39Price
                                                                                                                                  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
                                                                                                                                          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
                                                                                                                                                  €198.25 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €198.25 Price
                                                                                                                                                  Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                                                      €198.25Price
                                                                                                                                                      Kit Joint Refection moteur Origine Clio 3 RS
                                                                                                                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                                                                                          €198.25Price
                                                                                                                                                          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
                                                                                                                                                                  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
                                                                                                                                                                          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
                                                                                                                                                                                  Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                                                                                                      Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                                                                                                      €7.80Price
                                                                                                                                                                                      Joint de queue de soupape echappement Megane 3 RS et N4Joint de queue de soupape echappement Megane 3 RS et N4
                                                                                                                                                                                          Joint de queue de soupape echappement Megane 3 RS et N4 Vendu à l'unité Véritable produit d'origine
                                                                                                                                                                                          €7.80Price