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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: Entretien
  • Categories: Support moteur
En Stock
€3.00 Price
En Stock
€3.00 Price
Joint bimatiere 16mm
      The 16mm bimaterial gasket provides a reliable and durable sealing solution, suitable for various industrial, automotive, and domestic applications . Made from robust materials, it ensures a precise fit, easy installation, and optimal performance even under demanding conditions such as high temperatures and pressures.
      €3.00Price
      Joint bimatiere 16mm
          The 16mm bimaterial gasket provides a reliable and durable sealing solution, suitable for various industrial, automotive, and domestic applications . Made from robust materials, it ensures a precise fit, easy installation, and optimal performance even under demanding conditions such as high temperatures and pressures.
          €3.00Price
          Entretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 CupEntretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 Cup
              Entretoise galet distribution culasse Clio Gr N 8200607654
              €12.06Price
              Entretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 CupEntretoise galet distribution culasse Clio 2 RS y compris Gr N et X65 Cup
                  Entretoise galet distribution culasse Clio Gr N 8200607654
                  €12.06Price
                  Dispo selon configuration
                  €67.23 €74.70 Regular price -10% off Price
                  Dispo selon configuration
                  €67.23 €74.70 Regular price -10% off Price
                  Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                    • Pack
                    Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                    €67.23€74.70Regular price-10% offPrice
                    Kit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GTKit Vidange Elf SXR 5w40 Clio 4 RS - Megane 4 GT
                      • Pack
                      Kit Vidange Elf Evolution SXR comprenant 3 bidons de 2 Litres d'huile Elf Evolution SXR 5w40 (préconisation Constructeur), 1 filtre à huile Renault et 1 joint de vidange
                      €67.23€74.70Regular price-10% offPrice
                      En Stock
                      €50.21 €83.68 Regular price -40% off Price
                      En Stock
                      €50.21 €83.68 Regular price -40% off Price
                      Bobine D'allumage
                          Optimize your engine's combustion cycle with this genuine Renault ignition coil . Sold individually, it is the essential choice for Renault Megane 2 RS , Clio 3 RS , Megane 3 RS , and Twingo 2 RS owners looking to maintain optimal ignition performance. Certified...
                          €50.21€83.68Regular price-40% offPrice
                          Bobine D'allumage
                              Optimize your engine's combustion cycle with this genuine Renault ignition coil . Sold individually, it is the essential choice for Renault Megane 2 RS , Clio 3 RS , Megane 3 RS , and Twingo 2 RS owners looking to maintain optimal ignition performance. Certified...
                              €50.21€83.68Regular price-40% offPrice
                              En Stock
                              €158.84 €252.12 Regular price -37% off Price
                              En Stock
                              €158.84 €252.12 Regular price -37% off Price
                              Kit Distribution origine Clio 2 RSGenuine Renault Timing Kit - Clio 2 RS / Gr N / Cup
                                  Ensure your engine's longevity with this genuine RENAULT timing belt kit , engineered for the high-performance demands of the Renault Clio 2 RS , as well as Group N and X65 Cup racing versions. This complete pack guarantees maintenance that meets Renault Sport standards. ...
                                  €158.84€252.12Regular price-37% offPrice
                                  Kit Distribution origine Clio 2 RSGenuine Renault Timing Kit - Clio 2 RS / Gr N / Cup
                                      Ensure your engine's longevity with this genuine RENAULT timing belt kit , engineered for the high-performance demands of the Renault Clio 2 RS , as well as Group N and X65 Cup racing versions. This complete pack guarantees maintenance that meets Renault Sport standards. ...
                                      €158.84€252.12Regular price-37% offPrice
                                      Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                          Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                          €138.05Price
                                          Genuine Renault Sport throttle position potentiometer for Twingo R2, Clio R3, and X85 Cup racing engines.
                                              Do not risk unpredictable ignition cuts during a rally stage, a sudden loss of immediate throttle response, or an abrupt limp-mode activation that freezes your lap times on track. The genuine Potentiomètre papillon Twingo R2, Clio R3 et X85 Cup is the official factory-spec...
                                              €138.05Price
                                              En Stock
                                              €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
                                                      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
                                                              En Stock
                                                              €30.64 Price
                                                              En Stock
                                                              €30.64 Price
                                                              Joint tournant (joint spy vilebrequin coté volant moteur)
                                                                  The original Renault flywheel side oil seal is an essential part to ensure engine sealing for your Renault Clio 2 RS, Gr N, X65 Cup, Clio 3 RS, R3, X85 Cup, Mégane 2 RS, and Mégane 3 RS . Prevent oil leaks and maintain your vehicle's performance with this authentic replacement part.
                                                                  €30.64Price
                                                                  Joint tournant (joint spy vilebrequin coté volant moteur)
                                                                      The original Renault flywheel side oil seal is an essential part to ensure engine sealing for your Renault Clio 2 RS, Gr N, X65 Cup, Clio 3 RS, R3, X85 Cup, Mégane 2 RS, and Mégane 3 RS . Prevent oil leaks and maintain your vehicle's performance with this authentic replacement part.
                                                                      €30.64Price
                                                                      En Stock
                                                                      €251.47 Price
                                                                      En Stock
                                                                      €251.47 Price
                                                                      Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                                          Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                                          €251.47Price
                                                                          Kit Joint Refection moteur Origine Megane 3 RSKit Joint Refection moteur Origine Megane 3 RS
                                                                              Ensemble de joints nécessaire au bon remontage du moteur de Megane 3 RS Véritable produit d'origine
                                                                              €251.47Price
                                                                              Raccord Pompe à essence Clio GrN
                                                                                  Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                                                                  €50.45Price
                                                                                  Raccord Pompe à essence Clio GrN
                                                                                      Renault Clio 2 Group N Fuel Pump Connector , a component intended for the fuel supply system of vehicles configured for Group N applications. Vehicle brand: Renault Model: Clio 2 Application: Group N Part type: Fuel pump connector ...
                                                                                      €50.45Price
                                                                                      En Stock
                                                                                      €19.30 €25.79 Regular price -€6.49 off Price
                                                                                      En Stock
                                                                                      €19.30 €25.79 Regular price -€6.49 off Price
                                                                                      Courroie accessoire Twingo RS et R1
                                                                                          Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                                                          €19.30€25.79Regular price-€6.49 offPrice
                                                                                          Courroie accessoire Twingo RS et R1
                                                                                              Don't risk an unexpected breakdown! This summary concerns the Genuine RENAULT Accessory Belt for the Renault Twingo 2 RS and Renault Wind 1.6 16v models. This is an essential part for the smooth running of your sports engine. Failing to replace it in time risks costly damage. ...
                                                                                              €19.30€25.79Regular price-€6.49 offPrice
                                                                                              Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                                                  Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                                                  €20.00Price
                                                                                                  Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                                                      Vis de fixation de poulie de vilebrequin (damper) Clio 2 RS
                                                                                                      €20.00Price
                                                                                                      En Stock
                                                                                                      €13.37 Price
                                                                                                      En Stock
                                                                                                      €13.37 Price
                                                                                                      Joint Plenum Clio 2 RS
                                                                                                          Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                          €13.37Price
                                                                                                          Joint Plenum Clio 2 RS
                                                                                                              Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                              €13.37Price
                                                                                                              En Stock
                                                                                                              €27.31 Price
                                                                                                              En Stock
                                                                                                              €27.31 Price
                                                                                                              Joint Spy Vilebrequin Twingo RS y compris R1 et  R2
                                                                                                                  Joint Spy Vilebrequin Twingo RS y compris R1 et R2 Référence: 770086072
                                                                                                                  €27.31Price
                                                                                                                  Joint Spy Vilebrequin Twingo RS y compris R1 et  R2
                                                                                                                      Joint Spy Vilebrequin Twingo RS y compris R1 et R2 Référence: 770086072
                                                                                                                      €27.31Price
                                                                                                                      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
                                                                                                                                      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
                                                                                                                                              €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
                                                                                                                                                      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
                                                                                                                                                              €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 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
                                                                                                                                                                              Interrupteur coup de poing Megane N4
                                                                                                                                                                                  Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                                                                  €20.30Price
                                                                                                                                                                                  Interrupteur coup de poing Megane N4
                                                                                                                                                                                      Take zero risks on the track or in competition with this genuine Renault Sport emergency kill switch . An essential component of the electrical system for the Renault Megane N4 and Renault Twingo R2 , this emergency cutoff switch immediately cuts off power in the event of an incident to prevent electrical...
                                                                                                                                                                                      €20.30Price
                                                                                                                                                                                      Valve pression carter PCV Clio 4 RSGenuine Renault PCV Valve - Clio 4 RS / Mégane 4 RS & GT 205
                                                                                                                                                                                          Don't let a poorly managed crankcase pressure impact the health of your engine! Get the genuine Renault PCV Valve (Crankcase Pressure Valve) , an essential part for the Renault Clio 4 RS , Mégane 4 RS , or Mégane 4 GT 205 . A faulty valve leads to oil leaks and loss of...
                                                                                                                                                                                          €66.43Price
                                                                                                                                                                                          Valve pression carter PCV Clio 4 RSGenuine Renault PCV Valve - Clio 4 RS / Mégane 4 RS & GT 205
                                                                                                                                                                                              Don't let a poorly managed crankcase pressure impact the health of your engine! Get the genuine Renault PCV Valve (Crankcase Pressure Valve) , an essential part for the Renault Clio 4 RS , Mégane 4 RS , or Mégane 4 GT 205 . A faulty valve leads to oil leaks and loss of...
                                                                                                                                                                                              €66.43Price
                                                                                                                                                                                              Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                                                                                                                                                                                  Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                                                                                                                                                                                  €67.50Price
                                                                                                                                                                                                  Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)Renault Clio 2 RS Mechanical Throttle Potentiometer (Original Equivalent)
                                                                                                                                                                                                      Mechanical throttle potentiometer, identical to the original, compatible with Renault Clio 2 RS, Clio 2 Rally, Clio 2 Gr N, and Clio 2 X65 Cup. Optimal performance and precision for your vehicle.
                                                                                                                                                                                                      €67.50Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €15.49 Price
                                                                                                                                                                                                      En Stock
                                                                                                                                                                                                      €15.49 Price
                                                                                                                                                                                                      bague étanchéité bobine crayon
                                                                                                                                                                                                          The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                                                                          €15.49Price
                                                                                                                                                                                                          bague étanchéité bobine crayon
                                                                                                                                                                                                              The Renault ignition coil seal (gasket) is an original part designed to ensure perfect sealing and optimal performance of the ignition system on Renault Twingo 2 RS, Renault Clio 3 RS, Renault Clio R3, Renault Clio 3 X85 Cup, Renault Megane 2 RS, Renault Megane 3 RS, and Renault Megane N4 models.
                                                                                                                                                                                                              €15.49Price
                                                                                                                                                                                                              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