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Engine Parts & Tuning Hardware

Unleash Your Engine's Power: Performance Parts & Accessories

At Optimiz Access, we offer a vast lineup of engine performance parts and accessories to boost the output of your sports vehicle or premium automobile. Optimize your engine for extreme performance and enjoy an exhilarating driving experience on both road and track.

Key benefits of engine tuning: substantial horsepower and torque gains for rapid acceleration, sharper throttle response, enhanced mechanical reliability using high-strength components, and tailored custom tuning suited to all engines.

Essential Products to Maximize Engine Performance

Discover all our precision-engineered components designed to increase efficiency and durability in your engine block:

  • Cold Air Intakes & Air Filtration – Performance sports filters and carbon intake systems for maximum air filling.
  • Intercoolers & Charge Coolers – Efficient intake air cooling to sustain consistent power output under heavy loads.
  • Forged Pistons & Connecting Rods – Heavy-duty internal components built to withstand extreme temperatures and boost pressures.
  • Turbos & Superchargers – Forced induction upgrades delivering significant power increases.
  • Ignition & Servicing – Competition spark plugs, high-output ignition coils, and high-performance oil filters.

Industry-Leading Benchmark Brands

We stock top tuning and motorsport manufacturers: Wagner Tuning, Forge Motorsport, Magnecor, Green Filter, BMC Filter, NGK, Vibra Technics, and Powerflex. We also supply OEM factory parts to ensure meticulous engine maintenance.

Why you should Choose Optimiz Access for Your Engine Upgrades

Since 2010, Optimiz Access has specialized in selecting top-tier engine components for the custom upgrading and maintenance of sports vehicles. Located in northern France (Hauts-de-France) — near Lille, Valenciennes, Cambrai, Arras, Seclin, Douai, and Saint-Quentin —, our expert technicians guide your hardware selection and provide professional installation in our workshop. We ensure strict quality control along with fast worldwide shipping.

Unleash Your Engine's Full Potential Today

Give your car the raw power and sharp response it deserves. Trust the expertise of Optimiz Access, select your engine performance parts today, and benefit from our fast dispatch.

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  • Categories: Circuit d'eau
  • Categories: Entretien
  • Categories: Kit Allègement
  • Categories: Refroidissement
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
          En Stock
          €31.01 Price
          En Stock
          €31.01 Price
              Kit colliers pour kit durites d'eau Forge Clio 2 RS
              €31.01Price
                  Kit colliers pour kit durites d'eau Forge Clio 2 RS
                  €31.01Price
                  Kit joints spy et ecrous poulies arbre à cames Megane 2 RS
                      Kit joints spy et ecrous poulies arbre à cames Megane 2 RS Véritable produit d'origine
                      €49.33Price
                      Kit joints spy et ecrous poulies arbre à cames Megane 2 RS
                          Kit joints spy et ecrous poulies arbre à cames Megane 2 RS Véritable produit d'origine
                          €49.33Price
                          Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110
                              Preserve your engine's integrity with this genuine Renault oil filter . Specifically engineered for the high-performance engines found in the Renault Clio 4 RS (1.6 Turbo), Renault Megane 4 RS , and Alpine A110 (1.8 Turbo), this filter guarantees optimal removal of impurities. ...
                              €11.34Price
                              Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110Oil Filter - Renault Clio 4 RS, Megane 4 RS, Alpine A110
                                  Preserve your engine's integrity with this genuine Renault oil filter . Specifically engineered for the high-performance engines found in the Renault Clio 4 RS (1.6 Turbo), Renault Megane 4 RS , and Alpine A110 (1.8 Turbo), this filter guarantees optimal removal of impurities. ...
                                  €11.34Price
                                  En Stock
                                  €1.00 Price
                                  En Stock
                                  €1.00 Price
                                  Collier serrage inox (durite) diametre 8-12mm
                                      Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                      €1.00Price
                                      Collier serrage inox (durite) diametre 8-12mm
                                          Collier serrage inox (durite) diametre 8-12mm Vendu à l'unité
                                          €1.00Price
                                          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
                                                  Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                      The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                      €35.80Price
                                                      Joint décanteur Clio 2 RS y compris Gr N et X65 Cup
                                                          The Renault Oil Separator Seal is an original part designed to ensure the oil separator's sealing. Compatible with the Renault Clio 2 RS , Clio 2 Gr N , Clio 2 X65 Cup , and their rally/circuit versions, it is essential for proper engine function. Important: Verify your oil separator's shape, as two mounting...
                                                          €35.80Price
                                                          Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                              Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                              €89.65Price
                                                              Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup
                                                                  Joint de Culasse Clio 3 RS y compris Clio R3 et X85 Cup Véritable produit d'origine
                                                                  €89.65Price
                                                                  En Stock
                                                                  €82.24 Price
                                                                  En Stock
                                                                  €82.24 Price
                                                                  Calorstat Megane 3 RS
                                                                      Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                      €82.24Price
                                                                      Calorstat Megane 3 RS
                                                                          Ensure optimal thermal regulation for your Renault Megane 3 RS with this genuine Renault thermostat . With an opening temperature of 83°C , it is the key part to ensure your engine runs at the ideal temperature, preventing both overheating and undercooling. Don't compromise the health of your F4R engine.
                                                                          €82.24Price
                                                                          En Stock
                                                                          €1.00 Price
                                                                          En Stock
                                                                          €1.00 Price
                                                                          Collier serrage inox (durite) diametre 12-20mm
                                                                              Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                              €1.00Price
                                                                              Collier serrage inox (durite) diametre 12-20mm
                                                                                  Collier serrage inox (durite) diametre 12-20mm Vendu à l'unité
                                                                                  €1.00Price
                                                                                  Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 CupTampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                      Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                      €7.19Price
                                                                                      Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 CupTampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                          Tampon inférieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                          €7.19Price
                                                                                          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
                                                                                                  €110.08 Price
                                                                                                  En Stock
                                                                                                  €110.08 Price
                                                                                                  Galet tendeur accessoire Clio 3 RS - Megane 3 RS
                                                                                                      Galet tendeur accessoire Megane 3 RS Véritable produit d'origine
                                                                                                      €110.08Price
                                                                                                      Galet tendeur accessoire Clio 3 RS - Megane 3 RS
                                                                                                          Galet tendeur accessoire Megane 3 RS Véritable produit d'origine
                                                                                                          €110.08Price
                                                                                                          En Stock
                                                                                                          €4.37 Price
                                                                                                          En Stock
                                                                                                          €4.37 Price
                                                                                                          Bouchon de vidange carter d'huile moteur
                                                                                                              Bouchon de vidange carter d'huile moteur Produit compatible pour Clio 2 RS, Clio 3 RS, Megane 2 RS et Megane 3 RS
                                                                                                              €4.37Price
                                                                                                              Bouchon de vidange carter d'huile moteur
                                                                                                                  Bouchon de vidange carter d'huile moteur Produit compatible pour Clio 2 RS, Clio 3 RS, Megane 2 RS et Megane 3 RS
                                                                                                                  €4.37Price
                                                                                                                  En Stock
                                                                                                                  €243.60 Price
                                                                                                                  En Stock
                                                                                                                  €243.60 Price
                                                                                                                  Radiateur d'eau
                                                                                                                      Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                      €243.60Price
                                                                                                                      Radiateur d'eau
                                                                                                                          Optimize your engine's cooling with this high-performance water radiator designed for demanding powerplants. Whether you own a standard Clio 3 RS or a competition version like the Clio R3 or Twingo R2 , this component is...
                                                                                                                          €243.60Price
                                                                                                                          Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                                              Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                                              €7.96Price
                                                                                                                              Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                                                  Tampon supérieur radiateur Clio 3 RS y compris R3 et X85 Cup
                                                                                                                                  €7.96Price
                                                                                                                                  En Stock
                                                                                                                                  €18.79 Price
                                                                                                                                  En Stock
                                                                                                                                  €18.79 Price
                                                                                                                                  ELF Tranself NFX SAE 75W Gearbox Oil – 1L
                                                                                                                                      ELF Tranself NFX SAE 75W Gearbox Oil – 1 Litre The ELF Tranself NFX SAE 75W gearbox oil is a synthetic transmission lubricant designed for manual gearboxes requiring...
                                                                                                                                      €18.79Price
                                                                                                                                      ELF Tranself NFX SAE 75W Gearbox Oil – 1L
                                                                                                                                          ELF Tranself NFX SAE 75W Gearbox Oil – 1 Litre The ELF Tranself NFX SAE 75W gearbox oil is a synthetic transmission lubricant designed for manual gearboxes requiring...
                                                                                                                                          €18.79Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €24.71 Price
                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                          €24.71 Price
                                                                                                                                          Genuine NISSAN Oil Filter for NISSAN GTR R35Genuine NISSAN Oil Filter for NISSAN GTR R35
                                                                                                                                              Do not compromise the lubrication of your VR38DETT engine. This genuine Nissan oil filter is the only component certified by the manufacturer to ensure constant oil pressure and optimal filtration of impurities. Essential for every engine oil change , it preserves the longevity of your Nissan GTR R35 , whether for daily...
                                                                                                                                              €24.71Price
                                                                                                                                              Genuine NISSAN Oil Filter for NISSAN GTR R35Genuine NISSAN Oil Filter for NISSAN GTR R35
                                                                                                                                                  Do not compromise the lubrication of your VR38DETT engine. This genuine Nissan oil filter is the only component certified by the manufacturer to ensure constant oil pressure and optimal filtration of impurities. Essential for every engine oil change , it preserves the longevity of your Nissan GTR R35 , whether for daily...
                                                                                                                                                  €24.71Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €8.24 €20.59 Regular price -60% off Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €8.24 €20.59 Regular price -60% off Price
                                                                                                                                                  16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS
                                                                                                                                                      Do not risk a costly engine failure during your next track day. This 16mm diameter core plug is an essential engine safety component for all Renault Sport F4R blocks. Whether for the timing side or the left of the oil filter , this engine block expansion plug ensures a perfect seal and prevents coolant leaks under high...
                                                                                                                                                      €8.24€20.59Regular price-60% offPrice
                                                                                                                                                      16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS16mm Core Plug for Renault Clio 2 3 RS & Megane 2 3 RS
                                                                                                                                                          Do not risk a costly engine failure during your next track day. This 16mm diameter core plug is an essential engine safety component for all Renault Sport F4R blocks. Whether for the timing side or the left of the oil filter , this engine block expansion plug ensures a perfect seal and prevents coolant leaks under high...
                                                                                                                                                          €8.24€20.59Regular price-60% offPrice
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €74.52 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €74.52 Price
                                                                                                                                                          Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)
                                                                                                                                                              Do not risk the destruction of your F4R engine ! This Additional Timing Belt Protection Plate is essential for the Renault Clio 3 RS , Mégane 2 RS , and Mégane 3 RS . It offers crucial mechanical safety , protecting the timing belt from...
                                                                                                                                                              €74.52Price
                                                                                                                                                              Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)Additional Timing Belt Protection Plate - Clio 3 RS / Mégane 2 RS / Mégane 3 RS (F4R)
                                                                                                                                                                  Do not risk the destruction of your F4R engine ! This Additional Timing Belt Protection Plate is essential for the Renault Clio 3 RS , Mégane 2 RS , and Mégane 3 RS . It offers crucial mechanical safety , protecting the timing belt from...
                                                                                                                                                                  €74.52Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €79.00 Price
                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                  €79.00 Price
                                                                                                                                                                  Additional Timing Belt Protection Plate - Clio 2 RS (F4R)Additional Timing Belt Protection Plate - Clio 2 RS (F4R)
                                                                                                                                                                      Do not take the risk of a devastating engine failure ! This Additional Timing Belt Protection Plate is the essential element to secure the timing belt of your Renault Clio 2 RS (F4R engine). It provides vital protection against stone chips and debris, including...
                                                                                                                                                                      €79.00Price
                                                                                                                                                                      Additional Timing Belt Protection Plate - Clio 2 RS (F4R)Additional Timing Belt Protection Plate - Clio 2 RS (F4R)
                                                                                                                                                                          Do not take the risk of a devastating engine failure ! This Additional Timing Belt Protection Plate is the essential element to secure the timing belt of your Renault Clio 2 RS (F4R engine). It provides vital protection against stone chips and debris, including...
                                                                                                                                                                          €79.00Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €35.10 Price
                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                          €35.10 Price
                                                                                                                                                                          Genuine Renault Engine Oil Filler Cap for Clio 2/3 RS, Twingo 2 RS
                                                                                                                                                                              Preserve the performance of your Renault Clio 2 RS , Renault Clio 3 RS , or Renault Twingo 2 RS with this genuine RENAULT engine oil filler cap . An essential part to maintain the tightness and cleanliness of your engine. Find complementary products for the maintenance of your sports car at the bottom of the page.
                                                                                                                                                                              €35.10Price
                                                                                                                                                                              Genuine Renault Engine Oil Filler Cap for Clio 2/3 RS, Twingo 2 RS
                                                                                                                                                                                  Preserve the performance of your Renault Clio 2 RS , Renault Clio 3 RS , or Renault Twingo 2 RS with this genuine RENAULT engine oil filler cap . An essential part to maintain the tightness and cleanliness of your engine. Find complementary products for the maintenance of your sports car at the bottom of the page.
                                                                                                                                                                                  €35.10Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €20.56 Price
                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                  €20.56 Price
                                                                                                                                                                                  Bouchon de poulie de dephasage Clio 2 RSBouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                      Bouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                      €20.56Price
                                                                                                                                                                                      Bouchon de poulie de dephasage Clio 2 RSBouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                          Bouchon de poulie de dephasage Clio 2 RS
                                                                                                                                                                                          €20.56Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €9.30 Price
                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                          €9.30 Price
                                                                                                                                                                                          Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                              Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                              €9.30Price
                                                                                                                                                                                              Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                                  Bouchon vidange moteur Megane 4 RS - Clio 4 RS -Alpine A110
                                                                                                                                                                                                  €9.30Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €14.20 Price
                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                  €14.20 Price
                                                                                                                                                                                                  Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                                                                      Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                                                                      €14.20Price
                                                                                                                                                                                                      Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110Genuine Water Pump Gasket Megane 4 RS Clio 4 RS Alpine A110
                                                                                                                                                                                                          Do not risk catastrophic engine failure due to a coolant leak. This genuine Renault water pump gasket (certified OEM part) is the only component calibrated to guarantee absolute sealing of your high-performance engine's thermal circuit. Specifically engineered for the demanding engines of the Renault Megane 4 RS ,...
                                                                                                                                                                                                          €14.20Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €309.00 Price
                                                                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                                                                          €309.00 Price
                                                                                                                                                                                                          Complete Silicone Coolant Hose Kit Renault Mégane 2 RSComplete Silicone Coolant Hose Kit Renault Mégane 2 RS
                                                                                                                                                                                                              Complete Silicone Coolant Hose Kit – Renault Mégane 2 RS Complete silicone coolant hose kit designed for compatible Renault Mégane 2 RS models. The kit is intended to replace the corresponding hoses in the engine cooling system. Check the engine version and cooling system configuration before ordering.
                                                                                                                                                                                                              €309.00Price
                                                                                                                                                                                                              Complete Silicone Coolant Hose Kit Renault Mégane 2 RSComplete Silicone Coolant Hose Kit Renault Mégane 2 RS
                                                                                                                                                                                                                  Complete Silicone Coolant Hose Kit – Renault Mégane 2 RS Complete silicone coolant hose kit designed for compatible Renault Mégane 2 RS models. The kit is intended to replace the corresponding hoses in the engine cooling system. Check the engine version and cooling system configuration before ordering.
                                                                                                                                                                                                                  €309.00Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €44.21 Price
                                                                                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                                                                                  €44.21 Price
                                                                                                                                                                                                                  Genuine factory anti-snap steel metal engine oil level dipstick for Renault Megane 2 RS and Clio 3 RS.
                                                                                                                                                                                                                      Do not risk irreversible engine failure due to poor lubrication, inaccurate oil level readings, or plastic fragments breaking off inside your oil pan. The genuine metal oil dipstick for the Renault Megane 2 RS and Clio 3 RS is the definitive solution to replace the fragile...
                                                                                                                                                                                                                      €44.21Price
                                                                                                                                                                                                                      Genuine factory anti-snap steel metal engine oil level dipstick for Renault Megane 2 RS and Clio 3 RS.
                                                                                                                                                                                                                          Do not risk irreversible engine failure due to poor lubrication, inaccurate oil level readings, or plastic fragments breaking off inside your oil pan. The genuine metal oil dipstick for the Renault Megane 2 RS and Clio 3 RS is the definitive solution to replace the fragile...
                                                                                                                                                                                                                          €44.21Price