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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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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
          €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
                          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
                                  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
                                          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
                                                  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
                                                                                          €407.03 Price
                                                                                          Sur commande ou en cours de réappro
                                                                                          €407.03 Price
                                                                                          New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                              Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                              €407.03Price
                                                                                              New Genuine Renault Starter Motor - Clio 4 RS (All Phases)
                                                                                                  Ensure an instantaneous start for your Renault Clio 4 RS (all phases) with this brand-new genuine Renault starter motor . Unlike remanufactured units, this 100% new product guarantees maximum reliability and increased longevity for your 1.6 Turbo engine. Don't risk an immobilizing breakdown—choose manufacturer...
                                                                                                  €407.03Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €77.12 Price
                                                                                                  Sur commande ou en cours de réappro
                                                                                                  €77.12 Price
                                                                                                  Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                      Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                      €77.12Price
                                                                                                      Power Distribution Box & Starter Fuse Renault Megane 3 RSPower Distribution Box & Starter Fuse Renault Megane 3 RS
                                                                                                          Do not let a minor electrical failure lead to a major breakdown. This genuine Renault power distribution box is a critical component of your Renault Megane 3 RS starting circuit. Integrating essential high-power fuses , specifically for the starter motor and alternator protection, it ensures secure energy management from your...
                                                                                                          €77.12Price
                                                                                                          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
                                                                                                                  €188.74 Price
                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                  €188.74 Price
                                                                                                                  Jauge pompe Clio 2 RS 1
                                                                                                                      Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                      €188.74Price
                                                                                                                      Jauge pompe Clio 2 RS 1
                                                                                                                          Jauge pompe Clio 2 RS 1 Modele spécifique ayant le régulateur sur la pompe
                                                                                                                          €188.74Price
                                                                                                                          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
                                                                                                                                  €272.90 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €272.90 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €24.00 Price
                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                  €24.00 Price
                                                                                                                                      Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                      €24.00Price
                                                                                                                                          Tuyau nitrile GOODRIDGE DASH 6 (le m) Le...
                                                                                                                                          €24.00Price
                                                                                                                                          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
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €905.99 Price
                                                                                                                                                  Sur commande ou en cours de réappro
                                                                                                                                                  €905.99 Price
                                                                                                                                                  Tonnelet 60L Motul 300V 15W50
                                                                                                                                                      Tonnelet 60L Motul 300V 15W50 MEILLEURE FIABILITÉ <a class="acc-header active" href="https://www.motul.com/fr/fr/landings/new-300v#"...
                                                                                                                                                      €905.99Price
                                                                                                                                                      Tonnelet 60L Motul 300V 15W50
                                                                                                                                                          Tonnelet 60L Motul 300V 15W50 MEILLEURE FIABILITÉ <a class="acc-header active" href="https://www.motul.com/fr/fr/landings/new-300v#"...
                                                                                                                                                          €905.99Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €265.07 Price
                                                                                                                                                          Sur commande ou en cours de réappro
                                                                                                                                                          €265.07 Price
                                                                                                                                                          • New
                                                                                                                                                            Don't risk damaging your sports car engine or suffering from increased fuel consumption. The genuine RENAULT front upstream oxygen lambda sensor for Clio 4 RS guarantees absolute air/fuel mixture accuracy, preserving optimal performance and the 1.6 Turbo engine of your vehicle. Genuine RENAULT OEM part :...
                                                                                                                                                            €265.07Price
                                                                                                                                                            • New
                                                                                                                                                              Don't risk damaging your sports car engine or suffering from increased fuel consumption. The genuine RENAULT front upstream oxygen lambda sensor for Clio 4 RS guarantees absolute air/fuel mixture accuracy, preserving optimal performance and the 1.6 Turbo engine of your vehicle. Genuine RENAULT OEM part :...
                                                                                                                                                              €265.07Price
                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                              €160.52 Price
                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                              €160.52 Price
                                                                                                                                                              Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                                                                  Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                                                                  €160.52Price
                                                                                                                                                                  Flexible à carburant Réservoir / Té Clio 3 CupFlexible à carburant Réservoir / Té Clio 3 Cup
                                                                                                                                                                      Flexible à carburant Réservoir / Té Clio 3 Cup Référence: 7711162421
                                                                                                                                                                      €160.52Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €12.60 Price
                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                      €12.60 Price
                                                                                                                                                                      Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                          Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                          €12.60Price
                                                                                                                                                                          Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                              Joint de pompe à eau Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                              €12.60Price
                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                              €13.57 Price
                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                              €13.57 Price
                                                                                                                                                                                  Buse de diffusion 0.5mm Clio 4 X98 Cup et R3T Référence: 8201489621
                                                                                                                                                                                  €13.57Price
                                                                                                                                                                                      Buse de diffusion 0.5mm Clio 4 X98 Cup et R3T Référence: 8201489621
                                                                                                                                                                                      €13.57Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €12.71 Price
                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                      €12.71 Price
                                                                                                                                                                                          Porte filtre 200μ Clio 4 X98 R3T et Cup Référence: 8201489625
                                                                                                                                                                                          €12.71Price
                                                                                                                                                                                              Porte filtre 200μ Clio 4 X98 R3T et Cup Référence: 8201489625
                                                                                                                                                                                              €12.71Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €3.73 Price
                                                                                                                                                                                              Sur commande ou en cours de réappro
                                                                                                                                                                                              €3.73 Price
                                                                                                                                                                                              Vis de fixation cache moteur Clio 2 RS (coté bobine)
                                                                                                                                                                                                  Vis de fixation cache moteur Clio 2 RS (coté bobine)
                                                                                                                                                                                                  €3.73Price
                                                                                                                                                                                                  Vis de fixation cache moteur Clio 2 RS (coté bobine)
                                                                                                                                                                                                      Vis de fixation cache moteur Clio 2 RS (coté bobine)
                                                                                                                                                                                                      €3.73Price
                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                      €151.46 €252.43 Regular price -40% off Price
                                                                                                                                                                                                      Sur commande ou en cours de réappro
                                                                                                                                                                                                      €151.46 €252.43 Regular price -40% off Price
                                                                                                                                                                                                      Poulie Damper Clio 2 RSPoulie Damper Clio 2 RS
                                                                                                                                                                                                          Poulie damper Clio 2 RS Véritable produit d'origine
                                                                                                                                                                                                          €151.46€252.43Regular price-40% offPrice
                                                                                                                                                                                                          Poulie Damper Clio 2 RSPoulie Damper Clio 2 RS
                                                                                                                                                                                                              Poulie damper Clio 2 RS Véritable produit d'origine
                                                                                                                                                                                                              €151.46€252.43Regular price-40% offPrice