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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: Circuit d'air
  • Categories: Circuit d'eau
  • Categories: Préparation intérieure
Sur commande ou en cours de réappro
€259.00 Price
Sur commande ou en cours de réappro
€259.00 Price
Plaque reniflard Clio 2 RS 182 - Clio 3 RSPlaque reniflard Clio 2 RS 182 - Clio 3 RS
      Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
      €259.00Price
      Plaque reniflard Clio 2 RS 182 - Clio 3 RSPlaque reniflard Clio 2 RS 182 - Clio 3 RS
          Plaque de reniflard taillé massé venant en lieu et place de la plaque d'origine Ajout un raccord Dash permettant de venir connecter directement un recuperateur de vapeur d'huile. Cette piece est un serieux atout pour les véhicules ayant modifié le collecteur d'admission d'origine. Produit a completer avec un joint Loctite 5980.
          €259.00Price
          Sur commande ou en cours de réappro
          €29.50 Price
          Sur commande ou en cours de réappro
          €29.50 Price
              Adaptateur sonde température d'eau 10x100 sur durite 28mm
              €29.50Price
                  Adaptateur sonde température d'eau 10x100 sur durite 28mm
                  €29.50Price
                  Sur commande ou en cours de réappro
                  €122.90 €245.81 Regular price -50% off Price
                  Sur commande ou en cours de réappro
                  €122.90 €245.81 Regular price -50% off Price
                  Kit distribution origine Twingo 2 RS et R1
                      Kit distribution origine Twingo 2 RS
                      €122.90€245.81Regular price-50% offPrice
                      Kit distribution origine Twingo 2 RS et R1
                          Kit distribution origine Twingo 2 RS
                          €122.90€245.81Regular price-50% offPrice
                          Sur commande ou en cours de réappro
                          €319.57 Price
                          Sur commande ou en cours de réappro
                          €319.57 Price
                          New Genuine Renault Piston - Megane 3 RS & N4 EngineNew Genuine Renault Piston - Megane 3 RS & N4 Engine
                              The centerpiece of your Renault Megane 3 RS or Megane N4 engine, this genuine Renault piston is sold individually for targeted repair. Essential for restoring engine compression and preventing power loss, this new piston guarantees newfound reliability and performance. Important: the piston is supplied with only one circlip, and piston rings must be ordered...
                              €319.57Price
                              New Genuine Renault Piston - Megane 3 RS & N4 EngineNew Genuine Renault Piston - Megane 3 RS & N4 Engine
                                  The centerpiece of your Renault Megane 3 RS or Megane N4 engine, this genuine Renault piston is sold individually for targeted repair. Essential for restoring engine compression and preventing power loss, this new piston guarantees newfound reliability and performance. Important: the piston is supplied with only one circlip, and piston rings must be ordered...
                                  €319.57Price
                                  Sur commande ou en cours de réappro
                                  €9.26 Price
                                  Sur commande ou en cours de réappro
                                  €9.26 Price
                                  Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)
                                      Ensure ultimate engine reliability for your Renault Super 5 GT TURBO with this genuine Renault connecting rod bolt , sold individually. A crucial element of the rotating assembly, its strength is vital for your engine's performance and longevity. Don't compromise your block's integrity with uncertain quality parts.
                                      €9.26Price
                                      Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)Genuine Renault Connecting Rod Bolt - Renault Super 5 GT TURBO (Individual)
                                          Ensure ultimate engine reliability for your Renault Super 5 GT TURBO with this genuine Renault connecting rod bolt , sold individually. A crucial element of the rotating assembly, its strength is vital for your engine's performance and longevity. Don't compromise your block's integrity with uncertain quality parts.
                                          €9.26Price
                                          Sur commande ou en cours de réappro
                                          €8,731.62 €8,732.50 Regular price -0.01% off Price
                                          Sur commande ou en cours de réappro
                                          €8,731.62 €8,732.50 Regular price -0.01% off Price
                                          F4R Exchange Standard Original Renault Engine for Clio 3 RSF4R Exchange Standard Original Renault Engine for Clio 3 RS
                                              Worried about losing the power and reliability of your Renault Clio 3 RS ? Don't let a tired engine deprive you of thrilling sensations . Opt for our original Renault F4R assembled engine on exchange basis , the ideal solution to regain its former performance. Discover essential complementary products for your...
                                              €8,731.62€8,732.50Regular price-0.01% offPrice
                                              F4R Exchange Standard Original Renault Engine for Clio 3 RSF4R Exchange Standard Original Renault Engine for Clio 3 RS
                                                  Worried about losing the power and reliability of your Renault Clio 3 RS ? Don't let a tired engine deprive you of thrilling sensations . Opt for our original Renault F4R assembled engine on exchange basis , the ideal solution to regain its former performance. Discover essential complementary products for your...
                                                  €8,731.62€8,732.50Regular price-0.01% offPrice
                                                  Sur commande ou en cours de réappro
                                                  €174.97 Price
                                                  Sur commande ou en cours de réappro
                                                  €174.97 Price
                                                  Modine Clio 2 cupRENAULT Original Water/Oil Cooler Clio 2 X65 Cup & Clio 3 RS
                                                      Original RENAULT Water/Oil Cooler for Clio 2 X65 Cup &amp; Clio 3 RS Do not risk engine overheating and loss of performance . This original RENAULT water/oil heat exchanger is the vital component for maintaining optimal <span...
                                                      €174.97Price
                                                      Modine Clio 2 cupRENAULT Original Water/Oil Cooler Clio 2 X65 Cup & Clio 3 RS
                                                          Original RENAULT Water/Oil Cooler for Clio 2 X65 Cup &amp; Clio 3 RS Do not risk engine overheating and loss of performance . This original RENAULT water/oil heat exchanger is the vital component for maintaining optimal <span...
                                                          €174.97Price
                                                          Sur commande ou en cours de réappro
                                                          €17.65 Price
                                                          Sur commande ou en cours de réappro
                                                          €17.65 Price
                                                          Genuine factory reinforced rubber heater matrix radiator inlet coolant hose for Renault Twingo 2 RS.
                                                              Do not risk an unexpected coolant leak inside your cabin, a catastrophic engine overheat on track, or a sudden loss of pressure within your heating system. The premium heater matrix radiator inlet hose for the Renault Twingo 2 RS is the essential factory-specified conduit...
                                                              €17.65Price
                                                              Genuine factory reinforced rubber heater matrix radiator inlet coolant hose for Renault Twingo 2 RS.
                                                                  Do not risk an unexpected coolant leak inside your cabin, a catastrophic engine overheat on track, or a sudden loss of pressure within your heating system. The premium heater matrix radiator inlet hose for the Renault Twingo 2 RS is the essential factory-specified conduit...
                                                                  €17.65Price
                                                                  Silicone Coolant Hose Kit for Renault Clio 3 RSSilicone Coolant Hose Kit for Renault Clio 3 RS
                                                                      Do not let a stock hose baked by time ruin your sports car's engine. This FLEXEO silicone coolant hose kit is the ultimate solution to replace the porous rubber components on your Renault Clio 3 RS . Specifically engineered to withstand the extreme thermal demands of the 197 bhp and 203 bhp naturally aspirated engines (Clio 3 RS Phase 1, Phase 2, Cup, F1...
                                                                      €313.75Price
                                                                      Silicone Coolant Hose Kit for Renault Clio 3 RSSilicone Coolant Hose Kit for Renault Clio 3 RS
                                                                          Do not let a stock hose baked by time ruin your sports car's engine. This FLEXEO silicone coolant hose kit is the ultimate solution to replace the porous rubber components on your Renault Clio 3 RS . Specifically engineered to withstand the extreme thermal demands of the 197 bhp and 203 bhp naturally aspirated engines (Clio 3 RS Phase 1, Phase 2, Cup, F1...
                                                                          €313.75Price
                                                                          Sur commande ou en cours de réappro
                                                                          €3,544.38 Price
                                                                          Sur commande ou en cours de réappro
                                                                          €3,544.38 Price
                                                                          Culasse assemblée Megane 3 RSCulasse assemblée Megane 3 RS
                                                                              Culasse assemblée Megane 3 RS Culasse neuve comprenant soupapes assemblées
                                                                              €3,544.38Price
                                                                              Culasse assemblée Megane 3 RSCulasse assemblée Megane 3 RS
                                                                                  Culasse assemblée Megane 3 RS Culasse neuve comprenant soupapes assemblées
                                                                                  €3,544.38Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €22.00 Price
                                                                                  Sur commande ou en cours de réappro
                                                                                  €22.00 Price
                                                                                  Motul INUGEL CLASSIC 5L - Specific Coolant for Vintage VehiclesMotul INUGEL CLASSIC 5L - Specific Coolant for Vintage Vehicles
                                                                                      Protect your vintage or classic vehicle's engine with Motul INUGEL CLASSIC coolant , a premium 5-liter product. Specifically formulated for older vehicle cooling systems, it prevents corrosion , overheating , and premature wear . Don't let unsuitable fluid damage your engine.
                                                                                      €22.00Price
                                                                                      Motul INUGEL CLASSIC 5L - Specific Coolant for Vintage VehiclesMotul INUGEL CLASSIC 5L - Specific Coolant for Vintage Vehicles
                                                                                          Protect your vintage or classic vehicle's engine with Motul INUGEL CLASSIC coolant , a premium 5-liter product. Specifically formulated for older vehicle cooling systems, it prevents corrosion , overheating , and premature wear . Don't let unsuitable fluid damage your engine.
                                                                                          €22.00Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €32.10 Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €32.10 Price
                                                                                          Renault RS Water Inlet Pipe (Original Part)Renault RS Water Inlet Pipe (Original Part)
                                                                                              Renault Water Inlet Pipe (Clio 3 RS, Megane 2/3 RS, etc.) (Original) Original Renault water inlet pipe in the cylinder block (water fitting), compatible with Clio 3 RS, Clio R3, Clio 3 X85 Cup, Megane 2 RS, Megane 3 RS, Megane N4. Ensures optimal coolant circulation. Discover our compatible gaskets and water tubes at the bottom of the page.
                                                                                              €32.10Price
                                                                                              Renault RS Water Inlet Pipe (Original Part)Renault RS Water Inlet Pipe (Original Part)
                                                                                                  Renault Water Inlet Pipe (Clio 3 RS, Megane 2/3 RS, etc.) (Original) Original Renault water inlet pipe in the cylinder block (water fitting), compatible with Clio 3 RS, Clio R3, Clio 3 X85 Cup, Megane 2 RS, Megane 3 RS, Megane N4. Ensures optimal coolant circulation. Discover our compatible gaskets and water tubes at the bottom of the page.
                                                                                                  €32.10Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €79.93 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €79.93 Price
                                                                                                      Coussinet de bielles Clio R3 MAX (prix unitaire) La photo représente 4 coussinets mais le prix est unitaire
                                                                                                      €79.93Price
                                                                                                          Coussinet de bielles Clio R3 MAX (prix unitaire) La photo représente 4 coussinets mais le prix est unitaire
                                                                                                          €79.93Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €1.49 Price
                                                                                                          Sur commande ou en cours de réappro
                                                                                                          €1.49 Price
                                                                                                          Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                              Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                              €1.49Price
                                                                                                              Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                                  Bague 12.4x15 centrage culasse Clio 2 RS
                                                                                                                  €1.49Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €34.98 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €34.98 Price
                                                                                                                  Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                      Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                      €34.98Price
                                                                                                                      Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                          Support bague joint Vilebrequin Twingo 2 RS y compris R1 et R2
                                                                                                                          €34.98Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €289.00 Price
                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                          €289.00 Price
                                                                                                                          Kit durites d'eau silicone Megane 3 RSReinforced Silicone Water Hose Kit Renault Mégane 3 RS
                                                                                                                              Do not take the risk of breakdown anymore! The reinforced silicone water hose kit for Renault Mégane 3 RS is the essential upgrade for your engine's reliability . Advantageously replacing the original rubber hoses, which are often prone to cracking or swelling under heavy use, these hoses are designed to...
                                                                                                                              €289.00Price
                                                                                                                              Kit durites d'eau silicone Megane 3 RSReinforced Silicone Water Hose Kit Renault Mégane 3 RS
                                                                                                                                  Do not take the risk of breakdown anymore! The reinforced silicone water hose kit for Renault Mégane 3 RS is the essential upgrade for your engine's reliability . Advantageously replacing the original rubber hoses, which are often prone to cracking or swelling under heavy use, these hoses are designed to...
                                                                                                                                  €289.00Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €51.07 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €51.07 Price
                                                                                                                                  Capteur Température Eau Noir
                                                                                                                                      The original Renault black water temperature sensor is an essential part to ensure precise engine temperature control for your Renault Clio 3 RS , Renault Clio 3 X85 Cup , Renault Megane 3 RS , and Renault Megane N4 . It guarantees reliable information to optimize performance and prevent overheating. We ship...
                                                                                                                                      €51.07Price
                                                                                                                                      Capteur Température Eau Noir
                                                                                                                                          The original Renault black water temperature sensor is an essential part to ensure precise engine temperature control for your Renault Clio 3 RS , Renault Clio 3 X85 Cup , Renault Megane 3 RS , and Renault Megane N4 . It guarantees reliable information to optimize performance and prevent overheating. We ship...
                                                                                                                                          €51.07Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €107.33 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €107.33 Price
                                                                                                                                          Tuyau entrée sortie radiateur de chauffage Megane 2 RSTuyau entrée sortie radiateur de chauffage Megane 2 RS
                                                                                                                                              Tuyau entrée sortie radiateur de chauffage Megane 2 RS
                                                                                                                                              €107.33Price
                                                                                                                                              Tuyau entrée sortie radiateur de chauffage Megane 2 RSTuyau entrée sortie radiateur de chauffage Megane 2 RS
                                                                                                                                                  Tuyau entrée sortie radiateur de chauffage Megane 2 RS
                                                                                                                                                  €107.33Price
                                                                                                                                                  Joint de boitier papillon
                                                                                                                                                    • Pack
                                                                                                                                                    The mechanical throttle body gasket is a crucial performance part for optimizing the engine operation of your Renault Clio R3 or Renault Clio 3 X85 Cup . Ensure flawless sealing and maintain the power of your competition vehicle with this high-quality replacement gasket.
                                                                                                                                                    €7.93Price
                                                                                                                                                    Joint de boitier papillon
                                                                                                                                                      • Pack
                                                                                                                                                      The mechanical throttle body gasket is a crucial performance part for optimizing the engine operation of your Renault Clio R3 or Renault Clio 3 X85 Cup . Ensure flawless sealing and maintain the power of your competition vehicle with this high-quality replacement gasket.
                                                                                                                                                      €7.93Price
                                                                                                                                                      Joint de boitier papillon
                                                                                                                                                        • Pack
                                                                                                                                                        The mechanical throttle body gasket is a quality part essential for optimizing the engine performance of your Renault Twingo R2 . Ensure perfect sealing and maintain the performance of your rally vehicle with this reliable replacement gasket.
                                                                                                                                                        €7.93Price
                                                                                                                                                        Joint de boitier papillon
                                                                                                                                                          • Pack
                                                                                                                                                          The mechanical throttle body gasket is a quality part essential for optimizing the engine performance of your Renault Twingo R2 . Ensure perfect sealing and maintain the performance of your rally vehicle with this reliable replacement gasket.
                                                                                                                                                          €7.93Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €8.28 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €8.28 Price
                                                                                                                                                          Ensemble fixation hélice GMV Clio 2 RS et Gr N
                                                                                                                                                              Ensemble fixation hélice GMV Clio 2 RS et Gr N
                                                                                                                                                              €8.28Price
                                                                                                                                                              Ensemble fixation hélice GMV Clio 2 RS et Gr N
                                                                                                                                                                  Ensemble fixation hélice GMV Clio 2 RS et Gr N
                                                                                                                                                                  €8.28Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €54.29 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €54.29 Price
                                                                                                                                                                  Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                      Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                      €54.29Price
                                                                                                                                                                      Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                          Jeu de segments pour 1 piston Megane 2 RS
                                                                                                                                                                          €54.29Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €73.00 Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €73.00 Price
                                                                                                                                                                          Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RSConduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                              Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                              €73.00Price
                                                                                                                                                                              Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RSConduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                                  Conduit d'air (durite) jonction boite à air / papillon Twingo 2 RS
                                                                                                                                                                                  €73.00Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €73.00 Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €73.00 Price
                                                                                                                                                                                  Conduit air amont boite à air Twingo 2 RS
                                                                                                                                                                                      Conduit air amont boite à air Twingo 2 RS
                                                                                                                                                                                      €73.00Price
                                                                                                                                                                                      Conduit air amont boite à air Twingo 2 RS
                                                                                                                                                                                          Conduit air amont boite à air Twingo 2 RS
                                                                                                                                                                                          €73.00Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €14.44 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €14.44 Price
                                                                                                                                                                                          Gicleur Piston 2-4 Clio 2 RS 182 et Clio 3 RS
                                                                                                                                                                                              Ensure optimal lubrication for your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS F4R engine with this genuine Renault oil sprayer (oil jet) for cylinders 2 and 4. Essential for reliability, this small component sprays oil under the pistons to cool and lubricate them. Don't take any risks with the health of your F4R engine.
                                                                                                                                                                                              €14.44Price
                                                                                                                                                                                              Gicleur Piston 2-4 Clio 2 RS 182 et Clio 3 RS
                                                                                                                                                                                                  Ensure optimal lubrication for your Clio 2 RS 182, Clio 3 RS, or Megane 2 RS F4R engine with this genuine Renault oil sprayer (oil jet) for cylinders 2 and 4. Essential for reliability, this small component sprays oil under the pistons to cool and lubricate them. Don't take any risks with the health of your F4R engine.
                                                                                                                                                                                                  €14.44Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €303.66 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €303.66 Price
                                                                                                                                                                                                  Tuyau echangeur - papillon Megane 3 RS
                                                                                                                                                                                                      Maintain optimal intake pressure for your Mégane 3 RS ! Get this Genuine RENAULT Intake Hose , connecting the intercooler to the Sound Pipe . This crucial part includes the already fitted boost sensor (MAP sensor) , guaranteeing accurate pressure readings for your sports car's engine...
                                                                                                                                                                                                      €303.66Price
                                                                                                                                                                                                      Tuyau echangeur - papillon Megane 3 RS
                                                                                                                                                                                                          Maintain optimal intake pressure for your Mégane 3 RS ! Get this Genuine RENAULT Intake Hose , connecting the intercooler to the Sound Pipe . This crucial part includes the already fitted boost sensor (MAP sensor) , guaranteeing accurate pressure readings for your sports car's engine...
                                                                                                                                                                                                          €303.66Price