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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: Allumage
  • Categories: Circuit d'air
  • Categories: Kit Allègement
  • Categories: Refroidissement
En Stock
€118.80 Price
En Stock
€118.80 Price
Renault Exhaust Gas Sensor – Megane 4 RS & Alpine A110
  • New
    Genuine Renault exhaust gas temperature sensor designed for compatible vehicles including the Renault Megane 4 RS and Alpine A110 . An ideal replacement for a worn or faulty sensor, helping maintain accurate exhaust temperature monitoring and proper engine...
    €118.80Price
    Renault Exhaust Gas Sensor – Megane 4 RS & Alpine A110
    • New
      Genuine Renault exhaust gas temperature sensor designed for compatible vehicles including the Renault Megane 4 RS and Alpine A110 . An ideal replacement for a worn or faulty sensor, helping maintain accurate exhaust temperature monitoring and proper engine...
      €118.80Price
      En Stock
      €26.22 Price
      En Stock
      €26.22 Price
      Genuine Renault Spark Plug - Renault Megane 4 RSGenuine Renault Spark Plug - Renault Megane 4 RS
          Don't risk restricting the power potential of your 1.8 TCe engine. This genuine Renault spark plug (part number 224015221R ) is the only component certified by the manufacturer to guarantee flawless combustion and prevent destructive high-RPM misfires on your Renault Megane 4 RS , Trophy, or 300. ...
          €26.22Price
          Genuine Renault Spark Plug - Renault Megane 4 RSGenuine Renault Spark Plug - Renault Megane 4 RS
              Don't risk restricting the power potential of your 1.8 TCe engine. This genuine Renault spark plug (part number 224015221R ) is the only component certified by the manufacturer to guarantee flawless combustion and prevent destructive high-RPM misfires on your Renault Megane 4 RS , Trophy, or 300. ...
              €26.22Price
              Genuine Renault Camshaft Sensor Seal – Clio 3 RS (F4R) & Megane 3 RS (F4RT)
                  Don't risk an engine breakdown! This Genuine Renault Camshaft Position Sensor Seal is the essential component for your engine's sealing. Specifically designed for the sporty Renault Clio 3 RS (F4R), Clio 3 X85 Cup and Renault Megane 3 RS (F4RT) , it ensures flawless reliability and accurate engine data reading. ...
                  €2.95Price
                  Genuine Renault Camshaft Sensor Seal – Clio 3 RS (F4R) & Megane 3 RS (F4RT)
                      Don't risk an engine breakdown! This Genuine Renault Camshaft Position Sensor Seal is the essential component for your engine's sealing. Specifically designed for the sporty Renault Clio 3 RS (F4R), Clio 3 X85 Cup and Renault Megane 3 RS (F4RT) , it ensures flawless reliability and accurate engine data reading. ...
                      €2.95Price
                      En Stock
                      €649.37 Price
                      En Stock
                      €649.37 Price
                      Genuine Renault UPC 284B69854R | Mégane 3 RSGenuine Renault UPC Unit | Mégane 3 RS
                          Avoid leaving an electrical fault to immobilise your Renault Mégane 3 RS . This genuine Renault UPC unit (Protection and Switching Unit) , reference 284B69854R , is designed to manage the protection and distribution of several electrical...
                          €649.37Price
                          Genuine Renault UPC 284B69854R | Mégane 3 RSGenuine Renault UPC Unit | Mégane 3 RS
                              Avoid leaving an electrical fault to immobilise your Renault Mégane 3 RS . This genuine Renault UPC unit (Protection and Switching Unit) , reference 284B69854R , is designed to manage the protection and distribution of several electrical...
                              €649.37Price
                              En Stock
                              €230.05 €270.65 Regular price -15% off Price
                              En Stock
                              €230.05 €270.65 Regular price -15% off Price
                              Cale Porte Injecteur RS Clio 2 RSOriginal RENAULT Intake Manifold / Injector Rail Spacer for Clio 2 RS 182 hp
                                  The secret to 182 horsepower ! You wouldn't want to restrict the intake potential of your Clio 2 RS ? This Intake Manifold , also known as the Injector Rail Spacer , is the Original RENAULT part specific to the Clio 2 RS 182 hp models (compatible with all...
                                  €230.05€270.65Regular price-15% offPrice
                                  Cale Porte Injecteur RS Clio 2 RSOriginal RENAULT Intake Manifold / Injector Rail Spacer for Clio 2 RS 182 hp
                                      The secret to 182 horsepower ! You wouldn't want to restrict the intake potential of your Clio 2 RS ? This Intake Manifold , also known as the Injector Rail Spacer , is the Original RENAULT part specific to the Clio 2 RS 182 hp models (compatible with all...
                                      €230.05€270.65Regular price-15% offPrice
                                      Plot élastique ventilateur moteur Megane 3 RS et N4
                                          Plot élastique ventilateur moteur Megane 3 RS et N4
                                          €1.58Price
                                          Plot élastique ventilateur moteur Megane 3 RS et N4
                                              Plot élastique ventilateur moteur Megane 3 RS et N4
                                              €1.58Price
                                              En Stock
                                              €121.85 Price
                                              En Stock
                                              €121.85 Price
                                              Genuine Renault Idle Actuator - Clio 2 RS Phase 1Genuine Renault Idle Actuator - Clio 2 RS Phase 1
                                                  Restore perfect engine idle speed stability to your Renault Clio 2 RS Phase 1 with this genuine Renault idle actuator . An essential part often responsible for unstable idling , stalling, or difficult starting, it guarantees optimal performance for your F4R engine. Don't compromise the reliability of your sports car for a simple faulty sensor.
                                                  €121.85Price
                                                  Genuine Renault Idle Actuator - Clio 2 RS Phase 1Genuine Renault Idle Actuator - Clio 2 RS Phase 1
                                                      Restore perfect engine idle speed stability to your Renault Clio 2 RS Phase 1 with this genuine Renault idle actuator . An essential part often responsible for unstable idling , stalling, or difficult starting, it guarantees optimal performance for your F4R engine. Don't compromise the reliability of your sports car for a simple faulty sensor.
                                                      €121.85Price
                                                      Joint de boitier papillon
                                                        • Pack
                                                        The mechanical throttle body gasket is a quality part essential for optimizing the operation of your Renault Clio 2 RS Phase 1, Clio Gr N , or Clio 2 X65 Cup . Ensure perfect sealing and maintain your engine's performance with this reliable replacement gasket.
                                                        €7.93Price
                                                        Joint de boitier papillon
                                                          • Pack
                                                          The mechanical throttle body gasket is a quality part essential for optimizing the operation of your Renault Clio 2 RS Phase 1, Clio Gr N , or Clio 2 X65 Cup . Ensure perfect sealing and maintain your engine's performance with this reliable replacement gasket.
                                                          €7.93Price
                                                          En Stock
                                                          €10.02 Price
                                                          En Stock
                                                          €10.02 Price
                                                          Joint de cold side
                                                              COLD SIDE SEAL – JTCOLD The cold side seal, reference JTCOLD , is a sealing component intended for use on the cold side of an air circuit. It helps provide an airtight connection between...
                                                              €10.02Price
                                                              Joint de cold side
                                                                  COLD SIDE SEAL – JTCOLD The cold side seal, reference JTCOLD , is a sealing component intended for use on the cold side of an air circuit. It helps provide an airtight connection between...
                                                                  €10.02Price
                                                                  Genuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RSGenuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RS
                                                                      A key component for ignition and injection, this Genuine Renault Camshaft Position Sensor guarantees the accuracy of information transmitted to your sports car's ECU. Essential for the proper functioning of your Renault Clio 3 RS Phase 2, Clio 3 X85 Cup, and Renault Mégane 3 RS . Choose Manufacturer...
                                                                      €76.50Price
                                                                      Genuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RSGenuine Renault Camshaft Position Sensor – Clio 3 RS Ph2 & Megane 3 RS
                                                                          A key component for ignition and injection, this Genuine Renault Camshaft Position Sensor guarantees the accuracy of information transmitted to your sports car's ECU. Essential for the proper functioning of your Renault Clio 3 RS Phase 2, Clio 3 X85 Cup, and Renault Mégane 3 RS . Choose Manufacturer...
                                                                          €76.50Price
                                                                          En Stock
                                                                          €4.20 Price
                                                                          En Stock
                                                                          €4.20 Price
                                                                          Prise de bobine
                                                                              This replacement coil plug is designed to replace faulty original coil plugs on Renault Clio 3 RS, Megane 2 RS, Megane 3 RS, and Twingo 2 RS. It ensures a reliable connection and optimal performance of the ignition system.
                                                                              €4.20Price
                                                                              Prise de bobine
                                                                                  This replacement coil plug is designed to replace faulty original coil plugs on Renault Clio 3 RS, Megane 2 RS, Megane 3 RS, and Twingo 2 RS. It ensures a reliable connection and optimal performance of the ignition system.
                                                                                  €4.20Price
                                                                                  Accessory Belt for AC Delete Kit - Renault Mégane 4 RS
                                                                                      This Adapted Accessory Belt is a critical component for converting to an Air Conditioning Delete Kit on your Renault Mégane 4 RS . Its dimension is precisely defined to compensate for the removal of the AC compressor. This superior quality belt is essential for...
                                                                                      €29.34Price
                                                                                      Accessory Belt for AC Delete Kit - Renault Mégane 4 RS
                                                                                          This Adapted Accessory Belt is a critical component for converting to an Air Conditioning Delete Kit on your Renault Mégane 4 RS . Its dimension is precisely defined to compensate for the removal of the AC compressor. This superior quality belt is essential for...
                                                                                          €29.34Price
                                                                                          En Stock
                                                                                          €25.25 Price
                                                                                          En Stock
                                                                                          €25.25 Price
                                                                                          Accessory Belt for AC Delete Kit - Alpine A110
                                                                                              This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
                                                                                              €25.25Price
                                                                                              Accessory Belt for AC Delete Kit - Alpine A110
                                                                                                  This Specific Accessory Belt is an essential component when installing an Air Conditioning Delete Kit on your Alpine A110 . Its length is adjusted to bypass the air conditioning compressor that has been removed. A high-quality part, it guarantees the correct...
                                                                                                  €25.25Price
                                                                                                  En Stock
                                                                                                  €81.59 Price
                                                                                                  En Stock
                                                                                                  €81.59 Price
                                                                                                  Sonde lambda Clio 2 RS et X65 CupSonde lambda Clio 2 RS et X65 Cup
                                                                                                      Sonde lambda Clio 2 RS et X65 Cup Convient en Aval des Clio 172 et pour chacunes des sondes pour la 182
                                                                                                      €81.59Price
                                                                                                      Sonde lambda Clio 2 RS et X65 CupSonde lambda Clio 2 RS et X65 Cup
                                                                                                          Sonde lambda Clio 2 RS et X65 Cup Convient en Aval des Clio 172 et pour chacunes des sondes pour la 182
                                                                                                          €81.59Price
                                                                                                          Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
                                                                                                              The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
                                                                                                              €29.34Price
                                                                                                              Specific Accessory Belt for A/C Delete Kit Renault Clio 4 RS
                                                                                                                  The Optimiz Access Specific Accessory Belt is the essential part required to finalize the installation of the A/C Delete Kit on your Renault Clio 4 RS . Due to the change in the path and distance between the pulleys following the removal of the air conditioning compressor, the original belt can...
                                                                                                                  €29.34Price
                                                                                                                  En Stock
                                                                                                                  €21.91 €31.30 Regular price -30% off Price
                                                                                                                  En Stock
                                                                                                                  €21.91 €31.30 Regular price -30% off Price
                                                                                                                  Bougie origine Megane 4 GT 205Bougie origine Megane 4 GT 205
                                                                                                                      Bougie origine Megane 4 GT 205 Vendue à l'unité
                                                                                                                      €21.91€31.30Regular price-30% offPrice
                                                                                                                      Bougie origine Megane 4 GT 205Bougie origine Megane 4 GT 205
                                                                                                                          Bougie origine Megane 4 GT 205 Vendue à l'unité
                                                                                                                          €21.91€31.30Regular price-30% offPrice
                                                                                                                          En Stock
                                                                                                                          €233.69 Price
                                                                                                                          En Stock
                                                                                                                          €233.69 Price
                                                                                                                          Sonde lambda (oxygene) Clio 3 RSSonde lambda (oxygene) Clio 3 RS
                                                                                                                              Sonde lambda (oxygene) Clio 3 RS 2 Modeles existent, la difference se situe au niveau des connecteurs des prises. Nous contacter pour confirmer la compatibilité
                                                                                                                              €233.69Price
                                                                                                                              Sonde lambda (oxygene) Clio 3 RSSonde lambda (oxygene) Clio 3 RS
                                                                                                                                  Sonde lambda (oxygene) Clio 3 RS 2 Modeles existent, la difference se situe au niveau des connecteurs des prises. Nous contacter pour confirmer la compatibilité
                                                                                                                                  €233.69Price
                                                                                                                                  En Stock
                                                                                                                                  €126.80 €181.14 Regular price -30% off Price
                                                                                                                                  En Stock
                                                                                                                                  €126.80 €181.14 Regular price -30% off Price
                                                                                                                                  GMV (Ventilateur) type chauffo Twingo RS et R1
                                                                                                                                      GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                                                                                                                                      €126.80€181.14Regular price-30% offPrice
                                                                                                                                      GMV (Ventilateur) type chauffo Twingo RS et R1
                                                                                                                                          GMV (Ventilateur) type chauffo Twingo RS et R1 Référence: 7711162740 - 8200066098 Egalement compatible avec d'autres motorisations
                                                                                                                                          €126.80€181.14Regular price-30% offPrice
                                                                                                                                          En Stock
                                                                                                                                          €361.00 Price
                                                                                                                                          En Stock
                                                                                                                                          €361.00 Price
                                                                                                                                          Kit Admisssion Forge Motorsport Megane 4 RSKit Admisssion Forge Motorsport Megane 4 RS
                                                                                                                                              Kit Admisssion Forge Motorsport Megane 4 RS Produit developpé dans le but de  - Garder des temperatures d'admission interessantes et les plus basses possibles - Ameliorer l'afflux d'air - Ameliorer l'esthetique de la baie moteur Apres de nombreux essais, les resultats obtenus sont + 15ch Ce gain peut etre superieur en associant ce kit...
                                                                                                                                              €361.00Price
                                                                                                                                              Kit Admisssion Forge Motorsport Megane 4 RSKit Admisssion Forge Motorsport Megane 4 RS
                                                                                                                                                  Kit Admisssion Forge Motorsport Megane 4 RS Produit developpé dans le but de  - Garder des temperatures d'admission interessantes et les plus basses possibles - Ameliorer l'afflux d'air - Ameliorer l'esthetique de la baie moteur Apres de nombreux essais, les resultats obtenus sont + 15ch Ce gain peut etre superieur en associant ce kit...
                                                                                                                                                  €361.00Price
                                                                                                                                                  Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                                                                                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                                                                                                                      €187.01Price
                                                                                                                                                      Upgrade conduit admission forge avec adaptateur Megane 4 RSUpgrade conduit admission forge avec adaptateur Megane 4 RS
                                                                                                                                                          Upgrade conduit admission forge avec adaptateur Megane 4 RS. Produit developpé pour supprimer la restriction d'origine de l'admission. Bien qu'apportant deja un plus sur une voiture d'origine, ce produit a encore plus d'interet en cas de vehicule reprogrammé
                                                                                                                                                          €187.01Price
                                                                                                                                                          Régulateur (membrane) pression gaz collecteur admission Clio 3 RS
                                                                                                                                                              Régulateur pression gaz carter Clio 3 RS
                                                                                                                                                              €61.60Price
                                                                                                                                                              Régulateur (membrane) pression gaz collecteur admission Clio 3 RS
                                                                                                                                                                  €61.60Price
                                                                                                                                                                  Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                                                                                                                                      €2.34Price
                                                                                                                                                                      Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RSVis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS
                                                                                                                                                                          Vis de fixation poulie folle clim Clio 3 RS - Megane 2 RS - Megane 3 RS. Vendue à l'unité - 3 Vis sont nécessaires
                                                                                                                                                                          €2.34Price
                                                                                                                                                                          Jeu de Bougies NGK PFR7ZTG
                                                                                                                                                                              Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                                                                                                                                                                              €53.99Price
                                                                                                                                                                              Jeu de Bougies NGK PFR7ZTG
                                                                                                                                                                                  Maximize your engine's combustion cycle with this set of NGK PFR7ZTG Spark Plugs . Specifically engineered for the high-performance demands of Renault Sport engines, including the Clio 3 RS and Megane 2 RS , these plugs...
                                                                                                                                                                                  €53.99Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €13.37 Price
                                                                                                                                                                                  En Stock
                                                                                                                                                                                  €13.37 Price
                                                                                                                                                                                  Joint Plenum Clio 2 RS
                                                                                                                                                                                      Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                                                                                                      €13.37Price
                                                                                                                                                                                      Joint Plenum Clio 2 RS
                                                                                                                                                                                          Joint Plenum Clio 2 RS. Joint permettant de faire l’étanchéité entre le collecteur d'admission et le plenum Il est conseillé de le changer lors à chaque démontage et donc lors du retaillage de l'ensemble collecteur / plenum
                                                                                                                                                                                          €13.37Price
                                                                                                                                                                                          Joint anti-usure jonction écope divergent Twingo R2
                                                                                                                                                                                              Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                                                                                                              €8.48Price
                                                                                                                                                                                              Joint anti-usure jonction écope divergent Twingo R2
                                                                                                                                                                                                  Joint anti-usure jonction écope divergent Twingo R2 Référence: 7711167594
                                                                                                                                                                                                  €8.48Price
                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                  €71.22 €79.33 Regular price -€8.11 off Price
                                                                                                                                                                                                  En Stock
                                                                                                                                                                                                  €71.22 €79.33 Regular price -€8.11 off Price
                                                                                                                                                                                                  Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                      Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                                                                                                                                                                      €71.22€79.33Regular price-€8.11 offPrice
                                                                                                                                                                                                      Jeu de 4 Bougies Clio 2 RS y compris Gr N et X65 Cup
                                                                                                                                                                                                          Set of 4 Original Renault Spark Plugs - Clio 2 RS / Gr N / X65 Cup Optimize the performance of your Renault Clio 2 RS with this set of 4 original Renault spark plugs. Essential for perfect ignition and optimal combustion. Compatibility: Clio 2 RS, Clio 2 Gr N, Clio 2 X65 Cup. Original Renault Part Set of 4 spark plugs ...
                                                                                                                                                                                                          €71.22€79.33Regular price-€8.11 offPrice
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €13.20 Price
                                                                                                                                                                                                          En Stock
                                                                                                                                                                                                          €13.20 Price
                                                                                                                                                                                                          Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
                                                                                                                                                                                                              Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                                                                                                                                                              €13.20Price
                                                                                                                                                                                                              Joint Plenum Clio 3 RSJoint Plenum Clio 3 RS
                                                                                                                                                                                                                  Joint Plenum Clio 3 RS Joint permettant de faire l’étanchéité entre le moteur et le collecteur d'admission. Il est conseillé de le changer lors à chaque démontage
                                                                                                                                                                                                                  €13.20Price