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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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Negative Battery Terminal Original Renault for Renault SportNegative Battery Terminal Original Renault for Renault Sport
      Negative Battery Terminal Original Renault - Preserve the performance and safety of your Renault Sport. Compatible with Twingo 2 RS, Clio 3 RS, Megane 2 RS and Megane 3 RS. Discover also our other original Renault parts to optimize your vehicle.
      €13.66Price
      Negative Battery Terminal Original Renault for Renault SportNegative Battery Terminal Original Renault for Renault Sport
          Negative Battery Terminal Original Renault - Preserve the performance and safety of your Renault Sport. Compatible with Twingo 2 RS, Clio 3 RS, Megane 2 RS and Megane 3 RS. Discover also our other original Renault parts to optimize your vehicle.
          €13.66Price
          En Stock
          €5.53 Price
          En Stock
          €5.53 Price
          Demi Bague conique soupape
              Optimize the Performance and Reliability of Your Renault RS or Twingo RS with the Genuine Renault Valve Collet Manufactured by Renault, this valve collet is specifically designed to meet the precise requirements of Renault RS and Twingo RS engines. It delivers OEM-quality, durability, and performance, making it the ideal choice for drivers seeking reliability and...
              €5.53Price
              Demi Bague conique soupape
                  Optimize the Performance and Reliability of Your Renault RS or Twingo RS with the Genuine Renault Valve Collet Manufactured by Renault, this valve collet is specifically designed to meet the precise requirements of Renault RS and Twingo RS engines. It delivers OEM-quality, durability, and performance, making it the ideal choice for drivers seeking reliability and...
                  €5.53Price
                  En Stock
                  €31.26 Price
                  En Stock
                  €31.26 Price
                  Collection de 7 vis volant moteur
                      The official Renault Sport set of 7 flywheel bolts (ref. 7711150582 ) is a high-performance fastening kit, essential for competition vehicles such as Renault Twingo R1 , R2 , Clio 2 X65 Cup , Clio R3 , Clio 3 X85 Cup , and Megane N4 . Designed for secure and...
                      €31.26Price
                      Collection de 7 vis volant moteur
                          The official Renault Sport set of 7 flywheel bolts (ref. 7711150582 ) is a high-performance fastening kit, essential for competition vehicles such as Renault Twingo R1 , R2 , Clio 2 X65 Cup , Clio R3 , Clio 3 X85 Cup , and Megane N4 . Designed for secure and...
                          €31.26Price
                          En Stock
                          €114.89 Price
                          En Stock
                          €114.89 Price
                          Pompe à essence Sytec Clio 3 RS (Compatible E85)
                              Pompe à essence Sytec Clio 3 RS (Compatible E85) Montage...
                              €114.89Price
                              Pompe à essence Sytec Clio 3 RS (Compatible E85)
                                  Pompe à essence Sytec Clio 3 RS (Compatible E85) Montage...
                                  €114.89Price
                                  En Stock
                                  €317.52 Price
                                  En Stock
                                  €317.52 Price
                                  Genuine Renault Fuel Pump Gauge Module Clio 4 RSGenuine Renault Fuel Pump Gauge Module Clio 4 RS
                                      Ensure optimal fuel supply for your Renault Clio 4 RS with this genuine RENAULT fuel pump gauge module . Essential for reliable engine operation and accurate fuel level indication. Discover the compatible ring and seal kit for secure mounting at the bottom of the page.
                                      €317.52Price
                                      Genuine Renault Fuel Pump Gauge Module Clio 4 RSGenuine Renault Fuel Pump Gauge Module Clio 4 RS
                                          Ensure optimal fuel supply for your Renault Clio 4 RS with this genuine RENAULT fuel pump gauge module . Essential for reliable engine operation and accurate fuel level indication. Discover the compatible ring and seal kit for secure mounting at the bottom of the page.
                                          €317.52Price
                                          Demi-coussinet sup. ergoté / rainuré Clio R3 MAX (prix unitaire)Demi-coussinet sup. ergoté / rainuré Clio R3 MAX (prix unitaire)
                                              Demi-coussinet sup. ergoté / rainuré Clio R3 MAX (prix unitaire) La photo représente 5 coussinets mais le prix est unitaire
                                              €79.93Price
                                              Demi-coussinet sup. ergoté / rainuré Clio R3 MAX (prix unitaire)Demi-coussinet sup. ergoté / rainuré Clio R3 MAX (prix unitaire)
                                                  Demi-coussinet sup. ergoté / rainuré Clio R3 MAX (prix unitaire) La photo représente 5 coussinets mais le prix est unitaire
                                                  €79.93Price
                                                  En Stock
                                                  €31.04 Price
                                                  En Stock
                                                  €31.04 Price
                                                  Soupape d'admission forgéeForged Intake Valve
                                                      Forged Intake Valve – 28337-70856 The forged intake valve 28337-70856 is an engine component designed to control the entry of air, or the air-fuel mixture, into the combustion chamber. It...
                                                      €31.04Price
                                                      Soupape d'admission forgéeForged Intake Valve
                                                          Forged Intake Valve – 28337-70856 The forged intake valve 28337-70856 is an engine component designed to control the entry of air, or the air-fuel mixture, into the combustion chamber. It...
                                                          €31.04Price
                                                          En Stock
                                                          €2.82 Price
                                                          En Stock
                                                          €2.82 Price
                                                          Genuine Renault 20.5mm Core Plug - Ref 7703075147Genuine Renault 20.5mm Core Plug - Ref 7703075147
                                                              Ensure the perfect sealing and protection of your engine block with this genuine Renault core plug (freeze plug) with a 20.5mm diameter . This authentic part is essential during any engine rebuild to prevent coolant leaks. Manufacturer reference: 7703075147 . Precise 20.5mm...
                                                              €2.82Price
                                                              Genuine Renault 20.5mm Core Plug - Ref 7703075147Genuine Renault 20.5mm Core Plug - Ref 7703075147
                                                                  Ensure the perfect sealing and protection of your engine block with this genuine Renault core plug (freeze plug) with a 20.5mm diameter . This authentic part is essential during any engine rebuild to prevent coolant leaks. Manufacturer reference: 7703075147 . Precise 20.5mm...
                                                                  €2.82Price
                                                                  Soupape échappement Inconel F4R 30mmSoupape échappement Inconel F4R 30mm
                                                                      Soupape échappement Inconel F4R 30mm Attention +1mm par rapport à l'origine Head Diam:  30.00mm...
                                                                      €52.42Price
                                                                      Soupape échappement Inconel F4R 30mmSoupape échappement Inconel F4R 30mm
                                                                          Soupape échappement Inconel F4R 30mm Attention +1mm par rapport à l'origine Head Diam:  30.00mm...
                                                                          €52.42Price
                                                                          En Stock
                                                                          €112.82 Price
                                                                          En Stock
                                                                          €112.82 Price
                                                                          Pompe à essence Sytec Clio 4 RS (Compatible E85)
                                                                              Pompe à essence Sytec Clio 4 RS (Compatible E85) Débit max: 390 L/H Débit: 315 L/H à 3 Bar et 240 L:H à 5 Bar Pression MAX: 10.5 Bar
                                                                              €112.82Price
                                                                              Pompe à essence Sytec Clio 4 RS (Compatible E85)
                                                                                  Pompe à essence Sytec Clio 4 RS (Compatible E85) Débit max: 390 L/H Débit: 315 L/H à 3 Bar et 240 L:H à 5 Bar Pression MAX: 10.5 Bar
                                                                                  €112.82Price
                                                                                  En Stock
                                                                                  €137.94 Price
                                                                                  En Stock
                                                                                  €137.94 Price
                                                                                  Outil pose gicleur d'huile piston F4R
                                                                                      Optimize the installation of your lubrication system with the genuine Renault oil jet installation tool. Designed for F4R engines in Renault Clio 2 & 3 RS and Megane 2 & 3 RS, this tool ensures a perfect fit and optimal precision, guaranteeing reliable and durable engine performance.
                                                                                      €137.94Price
                                                                                      Outil pose gicleur d'huile piston F4R
                                                                                          Optimize the installation of your lubrication system with the genuine Renault oil jet installation tool. Designed for F4R engines in Renault Clio 2 & 3 RS and Megane 2 & 3 RS, this tool ensures a perfect fit and optimal precision, guaranteeing reliable and durable engine performance.
                                                                                          €137.94Price
                                                                                          En Stock
                                                                                          €17.83 Price
                                                                                          En Stock
                                                                                          €17.83 Price
                                                                                          Soupape admission Twingo 2 RS
                                                                                              The original Renault intake valve is an essential part to optimize airflow in the engine of your Renault Twingo 2 RS . It guarantees optimal engine performance and efficient combustion. We ship worldwide.
                                                                                              €17.83Price
                                                                                              Soupape admission Twingo 2 RS
                                                                                                  The original Renault intake valve is an essential part to optimize airflow in the engine of your Renault Twingo 2 RS . It guarantees optimal engine performance and efficient combustion. We ship worldwide.
                                                                                                  €17.83Price
                                                                                                  En Stock
                                                                                                  €693.23 Price
                                                                                                  En Stock
                                                                                                  €693.23 Price
                                                                                                  Cale admission porte injecteur Twingo R2 195/205
                                                                                                      Cale admission porte injecteur Twingo R2 195/205 Référence: 7711167613
                                                                                                      €693.23Price
                                                                                                      Cale admission porte injecteur Twingo R2 195/205
                                                                                                          Cale admission porte injecteur Twingo R2 195/205 Référence: 7711167613
                                                                                                          €693.23Price
                                                                                                          En Stock
                                                                                                          €81.02 €202.56 Regular price -60% off Price
                                                                                                          En Stock
                                                                                                          €81.02 €202.56 Regular price -60% off Price
                                                                                                          Electrovanne décalage (dephaseur) arbre à cames Clio 2 RSGenuine Renault Clio 2 RS 2.0L F4R VVT Solenoid (8200831629)
                                                                                                              Do not risk power loss and unstable idling on your Clio 2 RS . The Genuine Renault VVT Solenoid (Part Number 8200831629 ) is essential for the proper functioning of your 2.0L 16V F4R engine . This genuine part guarantees the precise management of variable valve timing ,...
                                                                                                              €81.02€202.56Regular price-60% offPrice
                                                                                                              Electrovanne décalage (dephaseur) arbre à cames Clio 2 RSGenuine Renault Clio 2 RS 2.0L F4R VVT Solenoid (8200831629)
                                                                                                                  Do not risk power loss and unstable idling on your Clio 2 RS . The Genuine Renault VVT Solenoid (Part Number 8200831629 ) is essential for the proper functioning of your 2.0L 16V F4R engine . This genuine part guarantees the precise management of variable valve timing ,...
                                                                                                                  €81.02€202.56Regular price-60% offPrice
                                                                                                                  En Stock
                                                                                                                  €164.00 Price
                                                                                                                  En Stock
                                                                                                                  €164.00 Price
                                                                                                                  Support Alternateur et pompe de DA 7700273712Support Alternateur et pompe de DA 7700273712
                                                                                                                      Support Alternateur et pompe de DA 7700273712 Produit destiné à la Clio 2 Cup Rally equipé de 1.6 16v Ne convient pas au F4R
                                                                                                                      €164.00Price
                                                                                                                      Support Alternateur et pompe de DA 7700273712Support Alternateur et pompe de DA 7700273712
                                                                                                                          Support Alternateur et pompe de DA 7700273712 Produit destiné à la Clio 2 Cup Rally equipé de 1.6 16v Ne convient pas au F4R
                                                                                                                          €164.00Price
                                                                                                                          En Stock
                                                                                                                          €3.55 Price
                                                                                                                          En Stock
                                                                                                                          €3.55 Price
                                                                                                                          Demi-cône de soupape admission EVO 2013 Twingo R2
                                                                                                                              Demi-cône de soupape admission EVO 2013 Twingo R2 Référence: 7711167705
                                                                                                                              €3.55Price
                                                                                                                              Demi-cône de soupape admission EVO 2013 Twingo R2
                                                                                                                                  Demi-cône de soupape admission EVO 2013 Twingo R2 Référence: 7711167705
                                                                                                                                  €3.55Price
                                                                                                                                  En Stock
                                                                                                                                  €34.04 Price
                                                                                                                                  En Stock
                                                                                                                                  €34.04 Price
                                                                                                                                  Support connecteur Cablage Megane 3 RS et N4Support connecteur Cablage Megane 3 RS et N4
                                                                                                                                      Support connecteur Cablage Megane 3 RS et N4 Référence: 242300002R
                                                                                                                                      €34.04Price
                                                                                                                                      Support connecteur Cablage Megane 3 RS et N4Support connecteur Cablage Megane 3 RS et N4
                                                                                                                                          Support connecteur Cablage Megane 3 RS et N4 Référence: 242300002R
                                                                                                                                          €34.04Price
                                                                                                                                          En Stock
                                                                                                                                          €14.68 Price
                                                                                                                                          En Stock
                                                                                                                                          €14.68 Price
                                                                                                                                          Mamelon filtre à huileWater/Oil Heat Exchanger Nipple Clio 3 RS - Original
                                                                                                                                              The original Renault water/oil heat exchanger nipple is an essential part to ensure optimal circulation of cooling and oil fluids in your Renault Clio 3 RS . It guarantees a stable engine temperature and optimal performance. We ship worldwide.
                                                                                                                                              €14.68Price
                                                                                                                                              Mamelon filtre à huileWater/Oil Heat Exchanger Nipple Clio 3 RS - Original
                                                                                                                                                  The original Renault water/oil heat exchanger nipple is an essential part to ensure optimal circulation of cooling and oil fluids in your Renault Clio 3 RS . It guarantees a stable engine temperature and optimal performance. We ship worldwide.
                                                                                                                                                  €14.68Price
                                                                                                                                                  Culasse K4M 7701478763Genuine Renault New Bare Cylinder Head - K4M Engine Twingo 2 RS & R1 (Ref. 7701478763)
                                                                                                                                                      The genuine Renault new bare cylinder head (reference 7701478763 ) is the solution for major engine problems in your Renault Twingo 2 RS or Twingo R1 . Specifically designed for the K4M engine , this new part is the only option for a reliable repair after overheating or a timing belt failure. Don't risk multiple breakdowns by choosing a used or repaired...
                                                                                                                                                      €1,258.87Price
                                                                                                                                                      Culasse K4M 7701478763Genuine Renault New Bare Cylinder Head - K4M Engine Twingo 2 RS & R1 (Ref. 7701478763)
                                                                                                                                                          The genuine Renault new bare cylinder head (reference 7701478763 ) is the solution for major engine problems in your Renault Twingo 2 RS or Twingo R1 . Specifically designed for the K4M engine , this new part is the only option for a reliable repair after overheating or a timing belt failure. Don't risk multiple breakdowns by choosing a used or repaired...
                                                                                                                                                          €1,258.87Price
                                                                                                                                                          En Stock
                                                                                                                                                          €11.53 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €11.53 Price
                                                                                                                                                          Demi coussinet rouge inf ligne arbre Twingo 2 RS
                                                                                                                                                              Demi coussinet rouge inf ligne arbre Twingo 2 RS Référence: 8200859991-8200859999-122239522R
                                                                                                                                                              €11.53Price
                                                                                                                                                              Demi coussinet rouge inf ligne arbre Twingo 2 RS
                                                                                                                                                                  Demi coussinet rouge inf ligne arbre Twingo 2 RS Référence: 8200859991-8200859999-122239522R
                                                                                                                                                                  €11.53Price
                                                                                                                                                                  Demi coussinet jaune bielle Twingo RS K4M 854
                                                                                                                                                                      Do not let invisible wear condemn your K4M engine block. This genuine Renault connecting rod bearing shell ( Yellow mark) is the critical component required to maintain oil pressure and the integrity of your rotating assembly. Specifically designed for the Renault Twingo 2 RS , as well as the Twingo R1 and Twingo R2...
                                                                                                                                                                      €6.13Price
                                                                                                                                                                      Demi coussinet jaune bielle Twingo RS K4M 854
                                                                                                                                                                          Do not let invisible wear condemn your K4M engine block. This genuine Renault connecting rod bearing shell ( Yellow mark) is the critical component required to maintain oil pressure and the integrity of your rotating assembly. Specifically designed for the Renault Twingo 2 RS , as well as the Twingo R1 and Twingo R2...
                                                                                                                                                                          €6.13Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €11.53 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €11.53 Price
                                                                                                                                                                          Demi coussinet noir ligne arbre Twingo R2Demi coussinet noir ligne arbre Twingo R2
                                                                                                                                                                              Demi coussinet noir ligne arbre Twingo R2 Référence: 8200859982-8200019804
                                                                                                                                                                              €11.53Price
                                                                                                                                                                              Demi coussinet noir ligne arbre Twingo R2Demi coussinet noir ligne arbre Twingo R2
                                                                                                                                                                                  Demi coussinet noir ligne arbre Twingo R2 Référence: 8200859982-8200019804
                                                                                                                                                                                  €11.53Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €11.53 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €11.53 Price
                                                                                                                                                                                  Demi coussinet rouge ligne arbre Twingo R2Demi coussinet rouge ligne arbre Twingo R2
                                                                                                                                                                                      Demi coussinet rouge ligne arbre Twingo R2 Référence: 8200859985-8200859995
                                                                                                                                                                                      €11.53Price
                                                                                                                                                                                      Demi coussinet rouge ligne arbre Twingo R2Demi coussinet rouge ligne arbre Twingo R2
                                                                                                                                                                                          Demi coussinet rouge ligne arbre Twingo R2 Référence: 8200859985-8200859995
                                                                                                                                                                                          €11.53Price
                                                                                                                                                                                          Collection de 24 grains de réglage soupapes Twingo R2 195-205
                                                                                                                                                                                              Collection de 24 grains de réglage soupapes admission Twingo R2 195-205  Référence: 7711167707
                                                                                                                                                                                              €485.14Price
                                                                                                                                                                                              Collection de 24 grains de réglage soupapes Twingo R2 195-205
                                                                                                                                                                                                  Collection de 24 grains de réglage soupapes admission Twingo R2 195-205  Référence: 7711167707
                                                                                                                                                                                                  €485.14Price