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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: Kit Allègement
  • Categories: Support moteur
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
          Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
              Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
              €55.88Price
              Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                  Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                  €55.88Price
                  En Stock
                  €178.04 Price
                  En Stock
                  €178.04 Price
                  Pompe à Essence Clio 2 RS et X65 Cup
                      Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                      €178.04Price
                      Pompe à Essence Clio 2 RS et X65 Cup
                          Fuel Gauge/Pump Module Renault Clio 2 RS (Original) Original Renault fuel gauge/pump module for Clio 2 RS Phase 2/3 (without regulator on rail) and Clio 2 X65 Cup. Ensures reliable fuel supply. Discover the compatible fixing ring and gasket at the bottom of the page.
                          €178.04Price
                          En Stock
                          €57.84 Price
                          En Stock
                          €57.84 Price
                          Capteur PMH Clio 2 RS
                              Capteur PMH Clio 2 RS Selon votre modèle actuel de PMH, il est peut être nécessaire de prendre l'adaptateur proposé en bas de page en supplément.
                              €57.84Price
                              Capteur PMH Clio 2 RS
                                  Capteur PMH Clio 2 RS Selon votre modèle actuel de PMH, il est peut être nécessaire de prendre l'adaptateur proposé en bas de page en supplément.
                                  €57.84Price
                                  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
                                          DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                              Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                              €224.09Price
                                              DeatschWerks 265L/H Fuel Pump (E85) for Renault Megane 2 RS
                                                  Secure your engine build with the DeatschWerks DW65c fuel pump , delivering a high-performance flow rate of 265L/H . Specifically engineered for the Renault Megane 2 RS , this pump offers the major advantage of being 100% E85 compatible (ethanol), making it the perfect choice for flex-fuel conversions. Its compact design allows...
                                                  €224.09Price
                                                  En Stock
                                                  €81.58 Price
                                                  En Stock
                                                  €81.58 Price
                                                  Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                      Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                      €81.58Price
                                                      Flexible de carburant Té vers rampe Twingo R1 - Clio R3 Max
                                                          Do not let a preventable engine failure ruin your race weekend. This high-pressure fuel hose , an authentic Renault Sport component (references 7711160195 / 7711162420 ), is the critical link between the T-connector and the fuel injector rail . Specifically engineered for Twingo R1,...
                                                          €81.58Price
                                                          Jeu de Bougies NGK PFR7ZTG
                                                              Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                                                              €53.99Price
                                                              Jeu de Bougies NGK PFR7ZTG
                                                                  Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                                                                  €53.99Price
                                                                  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
                                                                          Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                              Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                              €119.40Price
                                                                              Goodridge braided stainless steel tank-to-Tee fuel line part 7711160196 for Renault Twingo R1 R2 & Clio R3.
                                                                                  Do not risk a sudden drop in fuel pressure during a crucial rally stage, a highly inflammable fuel leak underneath your chassis, or an immediate technical disqualification during safety scrutineering. The genuine Goodridge fuel tank-to-Tee piece braided line , carrying the...
                                                                                  €119.40Price
                                                                                  En Stock
                                                                                  €122.62 Price
                                                                                  En Stock
                                                                                  €122.62 Price
                                                                                  Batterie sèche 12V-24Ah
                                                                                      Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                                      €122.62Price
                                                                                      Batterie sèche 12V-24Ah
                                                                                          Batterie sèche 12V-24Ah Référence: 7711127895 Durée de vie en floating jusqu'à 5 ans Batterie VRLA d'usage général Grilles plomb-calcium pour une durée de vie améliorée Construction en fibres de verre microporeuses sans acide libre Recombinaison de gaz Fabriqué dans le monde entier Bonne récupération d'une décharge...
                                                                                          €122.62Price
                                                                                          NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                                              Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                                              €26.77Price
                                                                                              NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)NGK Iridium Spark Plug - Renault Clio 4 RS (Trophy & Sport) (1 unit)
                                                                                                  Optimize the ignition of your 1.6 Turbo engine with the NGK Iridium spark plug for Clio 4 RS . Specifically designed for high-performance engines, it offers superior ignitability and exceptional thermal resistance. Sold individually, this premium spark...
                                                                                                  €26.77Price
                                                                                                  Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                      Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                      €173.57Price
                                                                                                      Tuyau carburant entre réservoir et coupling Goodridge Megane N4
                                                                                                          Tuyau carburant entre réservoir et coupling Goodridge Megane N4 Référence: 7711167089
                                                                                                          €173.57Price
                                                                                                          En Stock
                                                                                                          €396.19 Price
                                                                                                          En Stock
                                                                                                          €396.19 Price
                                                                                                          Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                                                                                              The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                                                                                              €396.19Price
                                                                                                              Module jauge pompe Megane 2 RSMegane 2 RS Fuel Gauge/Pump Module - Original
                                                                                                                  The original Renault fuel gauge/pump module is an essential part to ensure reliable and precise fuel supply on your Renault Megane 2 RS . Please note, there are two different assemblies for this vehicle. Contact us with your vehicle's VIN for accurate guidance.
                                                                                                                  €396.19Price
                                                                                                                  En Stock
                                                                                                                  €35.68 Price
                                                                                                                  En Stock
                                                                                                                  €35.68 Price
                                                                                                                  Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                                      Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                                      €35.68Price
                                                                                                                      Butée basse pédale d'accélérateur Twingo R2Butée basse pédale d'accélérateur Twingo R2
                                                                                                                          Butée basse pédale d'accélérateur Twingo R2 Référence: 7711157182
                                                                                                                          €35.68Price
                                                                                                                          En Stock
                                                                                                                          €199.00 Price
                                                                                                                          En Stock
                                                                                                                          €199.00 Price
                                                                                                                          Kit suppression de direction assistéeKit suppression de direction assistée
                                                                                                                              Kit suppression de direction assistée comprenant la poulie folle et son support.
                                                                                                                              €199.00Price
                                                                                                                              Kit suppression de direction assistéeKit suppression de direction assistée
                                                                                                                                  Kit suppression de direction assistée comprenant la poulie folle et son support.
                                                                                                                                  €199.00Price
                                                                                                                                  Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                                      Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                                      €217.02Price
                                                                                                                                      Genuine AC Delete Accessory Bracket - Renault Twingo 2 RSGenuine AC Delete Accessory Bracket - Renault Twingo 2 RS
                                                                                                                                          Don't let a heavy and power-consuming air conditioning compressor hold back the performance of your Renault Twingo 2 RS . This genuine Renault accessory bracket is the official solution for a reliable AC delete . Specifically designed for the K4M RS engine , it allows for significant weight reduction and improved engine...
                                                                                                                                          €217.02Price
                                                                                                                                          En Stock
                                                                                                                                          €546.20 Price
                                                                                                                                          En Stock
                                                                                                                                          €546.20 Price
                                                                                                                                          Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                              Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                              €546.20Price
                                                                                                                                              Alternateur Clio 3 RS y compris X85 Cup et R3
                                                                                                                                                  Ensure reliable electrical power for your Renault Clio 3 RS , Renault Clio R3 , or Renault Clio 3 X85 Cup with this genuine RENAULT alternator . An essential component for the proper functioning of your sports vehicle. Find associated complementary products at the bottom of the page for optimal...
                                                                                                                                                  €546.20Price
                                                                                                                                                  En Stock
                                                                                                                                                  €119.28 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €119.28 Price
                                                                                                                                                  Capteur pédale accélérateur Clio 3 RS
                                                                                                                                                      Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                                                                                      €119.28Price
                                                                                                                                                      Capteur pédale accélérateur Clio 3 RS
                                                                                                                                                          Capteur pédale accélérateur Clio 3 RS Attention 2 types de connecteurs existent, merci de controler la compatibilité avec votre véhicule Véritable produit d'origine
                                                                                                                                                          €119.28Price
                                                                                                                                                          En Stock
                                                                                                                                                          €34.73 €53.42 Regular price -35% off Price
                                                                                                                                                          En Stock
                                                                                                                                                          €34.73 €53.42 Regular price -35% off Price
                                                                                                                                                          Bougie origine
                                                                                                                                                              The genuine RENAULT Spark Plug , sold individually and an original manufacturer part, is essential for maintaining optimal performance in your Renault Megane 4 RS or Alpine A110 . Ensure perfect ignition and efficient combustion by choosing RENAULT quality.
                                                                                                                                                              €34.73€53.42Regular price-35% offPrice
                                                                                                                                                              Bougie origine
                                                                                                                                                                  The genuine RENAULT Spark Plug , sold individually and an original manufacturer part, is essential for maintaining optimal performance in your Renault Megane 4 RS or Alpine A110 . Ensure perfect ignition and efficient combustion by choosing RENAULT quality.
                                                                                                                                                                  €34.73€53.42Regular price-35% offPrice
                                                                                                                                                                  Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                      €4.16Price
                                                                                                                                                                      Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3
                                                                                                                                                                          Joint cuivre de bouchon de rampe Twingo R1 et R2 et Clio R3 Référence: 7903062105
                                                                                                                                                                          €4.16Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €12.78 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €12.78 Price
                                                                                                                                                                          Tuyau essence vapeur canister Ø8 Megane N4Tuyau essence vapeur canister Ø8 Megane N4
                                                                                                                                                                              Tuyau essence vapeur canister Ø8 Megane N4 Référence: 7711167251
                                                                                                                                                                              €12.78Price
                                                                                                                                                                              Tuyau essence vapeur canister Ø8 Megane N4Tuyau essence vapeur canister Ø8 Megane N4
                                                                                                                                                                                  Tuyau essence vapeur canister Ø8 Megane N4 Référence: 7711167251
                                                                                                                                                                                  €12.78Price
                                                                                                                                                                                  Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2
                                                                                                                                                                                      Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2 Référence: 7711050937
                                                                                                                                                                                      €3.04Price
                                                                                                                                                                                      Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2
                                                                                                                                                                                          Joint cuivre de banjo d'alimentation de rampe Twingo R1 et R2 Référence: 7711050937
                                                                                                                                                                                          €3.04Price