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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: Refroidissement
  • Categories: Support moteur
  • Categories: Suralimentation (Turbo)
En Stock
€720.00 Price
En Stock
€720.00 Price
Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
      Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
      €720.00Price
      Echangeur Airtec Megane 3 RSEchangeur Airtec Megane 3 RS
          Échangeur Airtec spécifique à la Mégane 3 RS. Échangeur de 60 mm se montant en lieu et place sans modifications et équipé d'une tôle permettant de diriger un plus gros flux d'air vers l’échangeur. Disponible en gris
          €720.00Price
          En Stock
          €83.39 Price
          En Stock
          €83.39 Price
          Boitier sortie eau sans calorstat Twingo R1 R2
              Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
              €83.39Price
              Boitier sortie eau sans calorstat Twingo R1 R2
                  Boitier sortie eau sans calorstat Twingo R1 R2 Référence: 7711162845
                  €83.39Price
                  Dispo selon configuration
                  €169.00 €209.02 Regular price -€40.02 off Price
                  Dispo selon configuration
                  €169.00 €209.02 Regular price -€40.02 off Price
                  COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                    • Pack
                    Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                    €169.00€209.02Regular price-€40.02 offPrice
                    COLD SIDE Clio 4 RS (conduit d'air renforcé)Uprated Cold Side Boost Pipe Kit - Renault Clio 4 RS
                      • Pack
                      Protect your turbocharging system against pressure drops with the high-performance Cold Side Kit for the Renault Clio 4 RS (Uprated Air Guide Pipe) . This reinforced intake hose replaces the fragile factory plastic pipe that is prone to cracking, optimizing cold airflow...
                      €169.00€209.02Regular price-€40.02 offPrice
                      Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                          Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                          €241.00Price
                          Multi-layer reinforced silicone turbo boost hose kit by Forge Motorsport for Renault Megane 2 RS.Silicone Turbo Hose Kit Forge | Renault Megane 2 RS
                              Do not risk a sudden loss of boost pressure during a hard acceleration pull, a split factory duct caused by extreme engine bay heat, or an efficiency drop at your intercooler cores. The premium Kit Durites (Tubulures) Turbo Forge Motorsport pour Megane 2 RS replaces...
                              €241.00Price
                              En Stock
                              €105.52 Price
                              En Stock
                              €105.52 Price
                              Pompe à eau K4M Twingo Rs R1 et R2
                                  Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                  €105.52Price
                                  Pompe à eau K4M Twingo Rs R1 et R2
                                      Pompe à eau K4M Twingo RS R1 et R2 Référence: 8200582675 Pompe à eau équipé de la poulie métallique, et non de la version en plastique moins fiable.
                                      €105.52Price
                                      Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                                          Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                                          €317.09Price
                                          Jeu durites Eau Silicone Forge Clio 2 RSJeu durites Eau Silicone Forge Clio 2 RS
                                              Jeu de 6 durites Silicone Forge. Ce kit remplace avantageusement les durites d'origines de la voiture car beaucoup plus résistantes. Apporte également un look visuel racing à votre moteur.
                                              €317.09Price
                                              En Stock
                                              €50.73 €72.47 Regular price -30% off Price
                                              En Stock
                                              €50.73 €72.47 Regular price -30% off Price
                                              Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                                                  Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                                                  €50.73€72.47Regular price-30% offPrice
                                                  Calorstat Clio 2 RS - Megane 2 RSGenuine Renault Thermostat - Megane 2 RS, Clio 2 RS & Cup
                                                      Optimize your engine's thermal regulation with this genuine Renault thermostat . Specifically designed for the Renault Megane 2 RS and Clio 2 RS , this calorstat guarantees rapid warm-up and protection against overheating during intense driving conditions. Certified genuine Renault...
                                                      €50.73€72.47Regular price-30% offPrice
                                                      Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                          Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                          €44.99Price
                                                          Durite Forge Admission Megane 2 RSForge Silicone Intake Hose Megane 2 RS
                                                              Forge Motorsport Silicone Intake Hose for Renault Megane 2 RS Optimize the airflow to your Renault Megane 2 RS engine with this high-quality silicone intake hose from Forge Motorsport (ref: FMRMBHS). Available in several colors. Connects to the throttle body. Discover associated products at the bottom of the page.
                                                              €44.99Price
                                                              Kit Complet Durites D'eau Clio 3 RSKit Complet Durites D'eau Clio 3 RS
                                                                  Kit complet de durites d'eau pour Clio 3 RS. Convient à toutes les Clio 3 RS Ce kit vient en lieu et place des durites d'origine et les remplacent avantageusement.
                                                                  €445.18Price
                                                                  Kit Complet Durites D'eau Clio 3 RSKit Complet Durites D'eau Clio 3 RS
                                                                      Kit complet de durites d'eau pour Clio 3 RS. Convient à toutes les Clio 3 RS Ce kit vient en lieu et place des durites d'origine et les remplacent avantageusement.
                                                                      €445.18Price
                                                                      Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                                          Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                                          €14.22Price
                                                                          Durite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGEDurite Silicone liaison conduit air turbo Megane 2 RS pour tubulure FORGE
                                                                              Durite Silicone liaison conduit air turbo Megane 2 RS Durite visible sur le dessus du moteur
                                                                              €14.22Price
                                                                              High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                  Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                  €10.93Price
                                                                                  High-tensile steel replacement tuning preload spring for Forge Motorsport dump valves.
                                                                                      Prevent boost pressure leaks and excessive throttle response lag on your turbocharged engine block. This premium Forge Dump Valve Preload Spring features an uprated mechanical rating designed specifically to maintain the internal piston seal of your bypass valve under high...
                                                                                      €10.93Price
                                                                                      Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                                                                          The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                                                                          €191.53Price
                                                                                          Dump Valve Ouverte Forge Clio 4 RSDump Valve Ouverte Forge Clio 4 RS
                                                                                              The Forge Motorsport open dump valve , reference FMDVC200A , is designed for the Renault Clio IV RS 1.6 Turbo 200/220 . This atmospheric blow-off valve replaces the standard setup and releases excess boost pressure externally when the throttle is lifted. The kit is specifically developed for the Clio 4 RS and includes...
                                                                                              €191.53Price
                                                                                              Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                  Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                  €117.43Price
                                                                                                  Pompe à eau Origine Renault Clio 3 RS - Megane 2 RS - Megane 3 RSGenuine OEM Water Pump - Renault Clio 3 RS / Megane 2/3 RS
                                                                                                      Safeguard the mechanical reliability and thermal efficiency of your high-performance engine with the Genuine Renault Sport Water Pump for F4R and F4Rt engines . This authentic factory replacement component is essential to ensure optimum coolant circulation under intense road...
                                                                                                      €117.43Price
                                                                                                      Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                          Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                          €140.75Price
                                                                                                          Durite Forge Induction Megane 2 RSDurite Forge Induction Megane 2 RS
                                                                                                              Durite Forge Silicone. Se monte en lieu et place Plusieurs Coloris Disponibles
                                                                                                              €140.75Price
                                                                                                              Dispo selon configuration
                                                                                                              €65.11 Price
                                                                                                              Dispo selon configuration
                                                                                                              €65.11 Price
                                                                                                              T de raccord de Dump Megane 2 RS
                                                                                                                  T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                                                  €65.11Price
                                                                                                                  T de raccord de Dump Megane 2 RS
                                                                                                                      T de marque Forge pour le raccord de Dump Valve (Diametre de liaison 25mm)
                                                                                                                      €65.11Price
                                                                                                                      En Stock
                                                                                                                      €221.33 Price
                                                                                                                      En Stock
                                                                                                                      €221.33 Price
                                                                                                                      Radiator Outlet Water Hose Renault Megane 3 RSRadiator Outlet Water Hose Renault Megane 3 RS
                                                                                                                          Genuine Renault Radiator Outlet Water Hose for Renault Megane 3 RS. Essential part for optimal engine cooling. Renault quality and reliability.
                                                                                                                          €221.33Price
                                                                                                                          Radiator Outlet Water Hose Renault Megane 3 RSRadiator Outlet Water Hose Renault Megane 3 RS
                                                                                                                              Genuine Renault Radiator Outlet Water Hose for Renault Megane 3 RS. Essential part for optimal engine cooling. Renault quality and reliability.
                                                                                                                              €221.33Price
                                                                                                                              En Stock
                                                                                                                              €220.69 Price
                                                                                                                              En Stock
                                                                                                                              €220.69 Price
                                                                                                                              Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                                  Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                                  €220.69Price
                                                                                                                                  Conduit air HP entrée boitier Clio 4 RSConduit air HP entrée boitier Clio 4 RS
                                                                                                                                      Conduit air HP entrée boitier Clio 4 RS Permet de remplacer le produit qui s'ouvre de temps en temps sous la pression du Turbo Produit d'origine
                                                                                                                                      €220.69Price
                                                                                                                                      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
                                                                                                                                              En Stock
                                                                                                                                              €98.33 Price
                                                                                                                                              En Stock
                                                                                                                                              €98.33 Price
                                                                                                                                              Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                                                                                                  Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                                                                                                  €98.33Price
                                                                                                                                                  Reinforced aluminum piston dump valve by Forge Motorsport for Megane 4 GT 205, SKU: FMSPRN12.Forge Piston Dump Valve | Renault Megane 4 GT 205
                                                                                                                                                      Prevent boost pressure leaks and safeguard your turbocharger's mechanical integrity with the Forge Dump Valve Megane 4 GT 205 . Engineered to replace the fragile factory rubber diaphragm valve, this premium billet aluminum piston-driven version guarantees a perfect air-tight...
                                                                                                                                                      €98.33Price
                                                                                                                                                      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
                                                                                                                                                              En Stock
                                                                                                                                                              €345.64 Price
                                                                                                                                                              En Stock
                                                                                                                                                              €345.64 Price
                                                                                                                                                              Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                                                  Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                                                  €345.64Price
                                                                                                                                                                  Conduit d'eau refroidissement turbo Megane 2 RSConduit d'eau refroidissement turbo Megane 2 RS
                                                                                                                                                                      Conduite d'eau refroidissement Turbo pour Megane 2 RS
                                                                                                                                                                      €345.64Price
                                                                                                                                                                      Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                                                                                                                                          Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                                                                                                                                          €15.34Price
                                                                                                                                                                          Joint de conduit d'air sortie de turbo Clio 4 RS - Megane 4 GT et RS
                                                                                                                                                                              Ensure absolute air tightness within your forced induction system with the Genuine Renault Turbo Outlet Air Duct Gasket . Specifically calibrated to withstand the high pressures of turbocharged engines, this official O-ring eliminates boost leaks between the turbocharger and...
                                                                                                                                                                              €15.34Price
                                                                                                                                                                              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
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €39.82 Price
                                                                                                                                                                                      En Stock
                                                                                                                                                                                      €39.82 Price
                                                                                                                                                                                      Silent Bloc Powerflex Anti Cabrage Sup Clio 3 RS
                                                                                                                                                                                          Silent Bloc Powerflex Anti Cabrage Superieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine
                                                                                                                                                                                          €39.82Price
                                                                                                                                                                                          Silent Bloc Powerflex Anti Cabrage Sup Clio 3 RS
                                                                                                                                                                                              Silent Bloc Powerflex Anti Cabrage Superieur pour Clio 3 RS Produit à inserieur en lieu et place du silent bloc d'origine
                                                                                                                                                                                              €39.82Price