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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'eau
  • Categories: Préparation intérieure
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  • Categories: Support moteur
En Stock
€178.20 Price
En Stock
€178.20 Price
Plaque reniflard Clio 2 RS 172
      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.
      €178.20Price
      Plaque reniflard Clio 2 RS 172
          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.
          €178.20Price
          En Stock
          €126.80 €181.14 Regular price -30% off Price
          En Stock
          €126.80 €181.14 Regular price -30% off Price
          GMV (Ventilateur) type chauffo Twingo RS et R1
              GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
              €126.80€181.14Regular price-30% offPrice
              GMV (Ventilateur) type chauffo Twingo RS et R1
                  GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                  €126.80€181.14Regular price-30% offPrice
                  En Stock
                  €11.53 Price
                  En Stock
                  €11.53 Price
                  Demi coussinet rainurés jaune vilebrequin K4M 854Demi coussinet rainurés jaune vilebrequin K4M 854
                      Demi coussinet rainurés jaune vilebrequin K4M 854
                      €11.53Price
                      Demi coussinet rainurés jaune vilebrequin K4M 854Demi coussinet rainurés jaune vilebrequin K4M 854
                          Demi coussinet rainurés jaune vilebrequin K4M 854
                          €11.53Price
                          En Stock
                          €202.54 Price
                          En Stock
                          €202.54 Price
                          Ecope supérieure de radiateur Clio R3 "MAXI"
                              Ecope supérieure de radiateur Clio R3 "MAXI" Ref: 7711160688
                              €202.54Price
                              Ecope supérieure de radiateur Clio R3 "MAXI"
                                  Ecope supérieure de radiateur Clio R3 "MAXI" Ref: 7711160688
                                  €202.54Price
                                  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
                                          €22.74 Price
                                          En Stock
                                          €22.74 Price
                                          Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                              Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                              €22.74Price
                                              Renault GLACEOL RX Type D Coolant 5LRenault GLACEOL RX Type D Coolant 5L
                                                  Renault Type D Coolant – 5 L The Renault GLACEOL RX Type D coolant in a 5-litre container is an engine cooling fluid designed for compatible Renault vehicles. It helps regulate engine...
                                                  €22.74Price
                                                  Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                      Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                      €265.93Price
                                                      Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                          Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                          €265.93Price
                                                          Calorstat Clio 3 RS 75°
                                                              Control your engine's temperature with this genuine Renault thermostat with an opening temperature of 75°C . Specifically designed for the Clio 3 RS , it also mounts without modification on the Clio 2 RS , allowing the cooling circuit to open more quickly. This part is essential for limiting temperature spikes and preventing the risk of engine overheating ...
                                                              €78.18Price
                                                              Calorstat Clio 3 RS 75°
                                                                  Control your engine's temperature with this genuine Renault thermostat with an opening temperature of 75°C . Specifically designed for the Clio 3 RS , it also mounts without modification on the Clio 2 RS , allowing the cooling circuit to open more quickly. This part is essential for limiting temperature spikes and preventing the risk of engine overheating ...
                                                                  €78.18Price
                                                                  En Stock
                                                                  €133.31 Price
                                                                  En Stock
                                                                  €133.31 Price
                                                                  Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                      €133.31Price
                                                                      Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                          €133.31Price
                                                                          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
                                                                                  €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
                                                                                          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
                                                                                                  Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                                                                                      Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                                                                                      €43.51Price
                                                                                                      Flasque palier ( X2.30 )2.3mm Crankshaft Thrust Washer - Renault Clio RS & Megane RS
                                                                                                          Ensure the longevity of your bottom end with this genuine Renault crankshaft thrust washer pair . Featuring a precise thickness of 2.3 mm , these thrust bearings are essential for controlling crankshaft end play on F7R and F4R engines. A certified OEM part for Clio Williams, Clio 2 RS, Clio 3 RS, and...
                                                                                                          €43.51Price
                                                                                                          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
                                                                                                                  €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
                                                                                                                          En Stock
                                                                                                                          €279.71 Price
                                                                                                                          En Stock
                                                                                                                          €279.71 Price
                                                                                                                          Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                                                                                              Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                                                                                              €279.71Price
                                                                                                                              Kit 11 Durites Silicone Super 5 GT TURBO Ph 2Kit 11 Durites Silicone Super 5 GT TURBO Ph 2
                                                                                                                                  Kit de 11 Durites Silicones pour Super 5 GT Turbo Phase 2 Noir mat afin de rester dans l'esprit d'origine de la voiture Parfait pour une restoration
                                                                                                                                  €279.71Price
                                                                                                                                  Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                                      Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                                      €36.80Price
                                                                                                                                      Fixations Forge Capteur Sur RadiateurFORGE MOTORSPORT FMRCLMP Sensor Securing Kit - Megane 2 RS
                                                                                                                                          Secure the sensors of your Megane 2 RS with the FORGE MOTORSPORT FMRCLMP kit. Composed of 2 reinforcements, it ensures optimal support for the depression hose and pressure sensor. Avoid performance losses and reliability issues.
                                                                                                                                          €36.80Price
                                                                                                                                          En Stock
                                                                                                                                          €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
                                                                                                                                                  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
                                                                                                                                                          €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
                                                                                                                                                                  Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                                                                                      The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                                                                                      €16.92Price
                                                                                                                                                                      Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                                                                                          The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                                                                                          €16.92Price
                                                                                                                                                                          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
                                                                                                                                                                                  Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                                                                      Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                                                                      €202.56Price
                                                                                                                                                                                      Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                                                                                                                                                          Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                                                                                                                                                          €202.56Price
                                                                                                                                                                                          Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                                              Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                                              €17.09Price
                                                                                                                                                                                              Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                                                  Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                                                  €17.09Price