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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: Allumage
  • Categories: Circuit d'eau
  • Categories: Préparation intérieure
En Stock
€50.73 €72.47 Regular price -30% off Price
En Stock
€50.73 €72.47 Regular price -30% off Price
Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
      Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
      €50.73€72.47Regular price-30% offPrice
      Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
          Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
          €50.73€72.47Regular price-30% offPrice
          Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
              Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
              €150.38Price
              Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
                  Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
                  €150.38Price
                  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
                          Vis de bielle origine
                              Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                              €8.56Price
                              Vis de bielle origine
                                  Secure your performance engine's bottom end with this genuine RENAULT connecting rod bolt , sold individually. Engineered to withstand high RPMs, it is essential for the maintenance and personalization of Clio 2 RS , Clio 3 RS , Megane 2/3 RS , and Clio Williams ...
                                  €8.56Price
                                  Durite modine/radiateur Clio 2 Cup
                                      The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                      €77.62Price
                                      Durite modine/radiateur Clio 2 Cup
                                          The Renault Sport water hose (ref. 7711154249 ) is an essential part to ensure optimal coolant circulation between the water/oil heat exchanger and the radiator of your Renault Clio 2 X65 Cup . It guarantees a stable engine temperature and optimal performance.
                                          €77.62Price
                                          En Stock
                                          €71.22 €79.33 Regular price -€8.11 off Price
                                          En Stock
                                          €71.22 €79.33 Regular price -€8.11 off Price
                                          Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                              Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                              €71.22€79.33Regular price-€8.11 offPrice
                                              Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                  Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                  €71.22€79.33Regular price-€8.11 offPrice
                                                  Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                      Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                      €117.43Price
                                                      Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                          Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                          €117.43Price
                                                          Durites de Reniflard et Wasegate Megane 2 RS
                                                              Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                                              €82.00Price
                                                              Durites de Reniflard et Wasegate Megane 2 RS
                                                                  Durites De reniflard Renforcées pour toutes Megane 2 RS. Produit de la marque Samco Sport Le kit est composé de 4 pièces.
                                                                  €82.00Price
                                                                  En Stock
                                                                  €83.39 Price
                                                                  En Stock
                                                                  €83.39 Price
                                                                  Boitier sortie eau sans calorstat Twingo R1 R2
                                                                      Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                      €83.39Price
                                                                      Boitier sortie eau sans calorstat Twingo R1 R2
                                                                          Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                                                                          €83.39Price
                                                                          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
                                                                                  En Stock
                                                                                  €105.52 Price
                                                                                  En Stock
                                                                                  €105.52 Price
                                                                                  Pompe à eau K4M Twingo Rs R1 et R2
                                                                                      Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                                                                      €105.52Price
                                                                                      Pompe à eau K4M Twingo Rs R1 et R2
                                                                                          Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                                                                          €105.52Price
                                                                                          En Stock
                                                                                          €149.05 €212.93 Regular price -30% off Price
                                                                                          En Stock
                                                                                          €149.05 €212.93 Regular price -30% off Price
                                                                                          Jeu de Bougies Renault Clio 4 RS
                                                                                              Set of 4 spark plugs for...
                                                                                              €149.05€212.93Regular price-30% offPrice
                                                                                              Jeu de Bougies Renault Clio 4 RS
                                                                                                  Set of 4 spark plugs for...
                                                                                                  €149.05€212.93Regular price-30% offPrice
                                                                                                  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
                                                                                                          Collection de 48 grains de réglage soupapes Twingo R2 195-205
                                                                                                              Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                                                                                                              €831.29Price
                                                                                                              Collection de 48 grains de réglage soupapes Twingo R2 195-205
                                                                                                                  Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                                                                                                                  €831.29Price
                                                                                                                  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
                                                                                                                      Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                                                                                                                          Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                                                                                                                          €317.09Price
                                                                                                                          Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                                                                                                                              Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                                                                                                                              €317.09Price
                                                                                                                              En Stock
                                                                                                                              €80.84 €115.49 Regular price -30% off Price
                                                                                                                              En Stock
                                                                                                                              €80.84 €115.49 Regular price -30% off Price
                                                                                                                              Jeu de Bougies Origine Megane 3 RS et N4
                                                                                                                                  Do not let poor combustion stifle the potential of your F4RT engine. This set of 4 genuine Renault spark plugs is specifically calibrated to meet the extreme thermal demands of the Renault Megane 3 RS (250, 265, and 275 hp). By choosing these manufacturer-certified plugs, you avoid misfires under full load and protect your cylinders from the risks of...
                                                                                                                                  €80.84€115.49Regular price-30% offPrice
                                                                                                                                  Jeu de Bougies Origine Megane 3 RS et N4
                                                                                                                                      Do not let poor combustion stifle the potential of your F4RT engine. This set of 4 genuine Renault spark plugs is specifically calibrated to meet the extreme thermal demands of the Renault Megane 3 RS (250, 265, and 275 hp). By choosing these manufacturer-certified plugs, you avoid misfires under full load and protect your cylinders from the risks of...
                                                                                                                                      €80.84€115.49Regular price-30% offPrice
                                                                                                                                      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
                                                                                                                                              En Stock
                                                                                                                                              €59.00 €69.41 Regular price -15% off Price
                                                                                                                                              En Stock
                                                                                                                                              €59.00 €69.41 Regular price -15% off Price
                                                                                                                                              Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                                                                                                  Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                                                                                                  €59.00€69.41Regular price-15% offPrice
                                                                                                                                                  Fuel Injector Genuine Renault Clio 2 RS / Gr.N / CupFuel Injector Genuine Renault Clio 2 RS / Gr.N / Cup
                                                                                                                                                      Protect your engine's health with this genuine Renault injector specifically designed for the Clio 2 RS . This authentic part features the ITG M60 marking, guaranteeing optimal fuel atomization for high-performance 2.0 16v engines. Brand new and original Renault ...
                                                                                                                                                      €59.00€69.41Regular price-15% offPrice
                                                                                                                                                      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