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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
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En Stock
€25.25 Price
En Stock
€25.25 Price
Accessory Belt for AC Delete Kit - Alpine A110
      This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
      €25.25Price
      Accessory Belt for AC Delete Kit - Alpine A110
          This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
          €25.25Price
          En Stock
          €21.91 €31.30 Regular price -30% off Price
          En Stock
          €21.91 €31.30 Regular price -30% off Price
          Bougie origine Megane 4 GT 205Bougie origine Megane 4 GT 205
              Bougie origine Megane 4 GT 205 Vendue à l'unité
              €21.91€31.30Regular price-30% offPrice
              Bougie origine Megane 4 GT 205Bougie origine Megane 4 GT 205
                  Bougie origine Megane 4 GT 205 Vendue à l'unité
                  €21.91€31.30Regular price-30% offPrice
                  Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
                      The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
                      €29.34Price
                      Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
                          The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
                          €29.34Price
                          En Stock
                          €233.69 Price
                          En Stock
                          €233.69 Price
                          Sonde lambda (oxygene) Clio 3 RSSonde lambda (oxygene) Clio 3 RS
                              Sonde lambda (oxygene) Clio 3 RS 2 Modeles existent, la difference se situe au niveau des connecteurs des prises. Nous contacter pour confirmer la compatibilité
                              €233.69Price
                              Sonde lambda (oxygene) Clio 3 RSSonde lambda (oxygene) Clio 3 RS
                                  Sonde lambda (oxygene) Clio 3 RS 2 Modeles existent, la difference se situe au niveau des connecteurs des prises. Nous contacter pour confirmer la compatibilité
                                  €233.69Price
                                  Câble alimentation protection batterie Megane 3 RS et N4
                                      Câble alimentation protection batterie Megane 3 RS et N4
                                      €96.72Price
                                      Câble alimentation protection batterie Megane 3 RS et N4
                                          Câble alimentation protection batterie Megane 3 RS et N4
                                          €96.72Price
                                          En Stock
                                          €32.92 Price
                                          En Stock
                                          €32.92 Price
                                          Rampe injection Clio 2 RS 172 phase 2 et 182
                                              Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                              €32.92Price
                                              Rampe injection Clio 2 RS 172 phase 2 et 182
                                                  Fuel injection rail Renault Clio 2 RS Phase 2 & 3 Give your Renault Clio 2 RS Phase 2 or 3 an optimum fuel supply with the genuine Renault injection rail! Designed for sports driving enthusiasts, this rail guarantees a constant and precise fuel flow, even at high engine speeds, for optimum performance and an unrivalled driving experience. ...
                                                  €32.92Price
                                                  Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                      €2.34Price
                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                          €2.34Price
                                                          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
                                                                                                                                  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
                                                                                                                                          €66.99 Price
                                                                                                                                          En Stock
                                                                                                                                          €66.99 Price
                                                                                                                                          Injecteur Clio 3 RS et X85 Cup
                                                                                                                                              The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                              €66.99Price
                                                                                                                                              Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                  The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                  €66.99Price
                                                                                                                                                  En Stock
                                                                                                                                                  €71.22 €79.33 Regular price -€8.11 off Price
                                                                                                                                                  En Stock
                                                                                                                                                  €71.22 €79.33 Regular price -€8.11 off Price
                                                                                                                                                  Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                      Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                                                                                                                      €71.22€79.33Regular price-€8.11 offPrice
                                                                                                                                                      Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                          Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                                                                                                                          €71.22€79.33Regular price-€8.11 offPrice
                                                                                                                                                          En Stock
                                                                                                                                                          €88.16 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €88.16 Price
                                                                                                                                                          Bougies Iridium Denso Megane RS
                                                                                                                                                              Denso Iridium Spark Plugs for Mégane RS - Maximum Performance and Reliability Boost your Mégane RS's performance with Denso Iridium spark plugs, designed to deliver a stronger spark and more efficient combustion. With their iridium electrode, these spark plugs ensure better engine responsiveness, optimized fuel consumption, and increased longevity compared to standard plugs. ...
                                                                                                                                                              €88.16Price
                                                                                                                                                              Bougies Iridium Denso Megane RS
                                                                                                                                                                  Denso Iridium Spark Plugs for Mégane RS - Maximum Performance and Reliability Boost your Mégane RS's performance with Denso Iridium spark plugs, designed to deliver a stronger spark and more efficient combustion. With their iridium electrode, these spark plugs ensure better engine responsiveness, optimized fuel consumption, and increased longevity compared to standard plugs. ...
                                                                                                                                                                  €88.16Price
                                                                                                                                                                  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
                                                                                                                                                                          Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                                                                                                            • Pack
                                                                                                                                                                            Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                                                                                                            €269.74Price
                                                                                                                                                                            Pompe essence modifiée Clio Gr NModified Fuel Pump DASH Fitting Renault Sport for Renault Clio 2 Gr N (7711129520)
                                                                                                                                                                              • Pack
                                                                                                                                                                              Do not take the risk of seeing the performance of your Renault Clio 2 Group N drop sharply. Without a stable and optimal fuel supply, you lose your advantage on the track. This modified fuel pump (Reference 7711129520 ) is the official Renault Sport part essential for maintaining...
                                                                                                                                                                              €269.74Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €37.52 Price
                                                                                                                                                                              En Stock
                                                                                                                                                                              €37.52 Price
                                                                                                                                                                              Raccord 90° de rampe d'injection Clio Gr N
                                                                                                                                                                                  Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                                                                                                                                  €37.52Price
                                                                                                                                                                                  Raccord 90° de rampe d'injection Clio Gr N
                                                                                                                                                                                      Secure your fuel system with this official RENAULT SPORT 90° fuel rail fitting . A key component from the competition catalog for the Renault Clio 2 RS Group N , this fitting ensures constant flow and absolute sealing under pressure. Do not let a standard component compromise the safety of your racing setup or your track day...
                                                                                                                                                                                      €37.52Price