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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
  • Categories: Allumage
  • Categories: Kit Allègement
  • Categories: Préparation intérieure
Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
      Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
      €150.38Price
      Jeu de 4 Fils de Bougies Magnecor Clio 1 16s / Williams
          Kit de fils d'allumage MAGNECOR - Renault Clio 16S/Williams
          €150.38Price
          Collection de 48 grains de réglage soupapes Twingo R2 195-205
              Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
              €831.29Price
              Collection de 48 grains de réglage soupapes Twingo R2 195-205
                  Collection de 48 grains de réglage soupapes Twingo R2 195-205 7711167645
                  €831.29Price
                  Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                      €33.94Price
                      Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                          Joint spy vilebrequin côté distribution Twingo RS y compris R1 et R2
                          €33.94Price
                          Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                              Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                              €55.88Price
                              Fuel Pump Locking Ring and Seal Kit - Renault Sport Range
                                  Ensure a leak-free fuel system with this genuine Renault fuel pump locking ring and seal kit . Essential for any intervention on the fuel sender unit, this kit prevents leaks and persistent fuel odors inside your sports vehicle's cabin. Includes the locking nut (ring) and the...
                                  €55.88Price
                                  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
                                          Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                              Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                              €202.56Price
                                              Electrovanne décalage arbre à cames (dephasage) Clio 3 RS phase 2 et Cup X85 et Megane 3 RS
                                                  Camshaft Phasing Solenoid Valve : genuine RENAULT part essential for the proper function and engine performance of your Renault Clio 3 RS Phase 2 and Renault Megane 3 RS . A faulty component leads to power loss and unstable idling. Ensures optimal...
                                                  €202.56Price
                                                  En Stock
                                                  €174.00 Price
                                                  En Stock
                                                  €174.00 Price
                                                  Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                      €174.00Price
                                                      Joint de Culasse renforcé Cometic Megane 3 RS 1.7Joint de Culasse renforcé Cometic Megane 3 RS 1.7
                                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.7 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                          €174.00Price
                                                          Collection de Ségments (X82.70)
                                                              Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                              €37.55Price
                                                              Collection de Ségments (X82.70)
                                                                  Ensure a perfect engine seal with this genuine Renault piston ring set . Specifically designed for the F4R and F4Rt engines found in the Clio 2 RS , Clio 3 RS , and Megane 3 RS , this kit is the crucial element for restoring...
                                                                  €37.55Price
                                                                  En Stock
                                                                  €70.25 Price
                                                                  En Stock
                                                                  €70.25 Price
                                                                  Blue Crankshaft Half-Bearing Set
                                                                      Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                      €70.25Price
                                                                      Blue Crankshaft Half-Bearing Set
                                                                          Blue Crankshaft Half-Bearing Set This blue crankshaft half-bearing set is designed for engine applications requiring compatible crankshaft bearing components. Before ordering, check the engine specification and the manufacturer's references to ensure correct fitment.
                                                                          €70.25Price
                                                                          En Stock
                                                                          €198.25 Price
                                                                          En Stock
                                                                          €198.25 Price
                                                                          Kit Joint Refection moteur Origine Clio 3 RS
                                                                              Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                              €198.25Price
                                                                              Kit Joint Refection moteur Origine Clio 3 RS
                                                                                  Ensemble de joints nécéssaire au bon remontage du moteur de Clio 3 RS Véritable produit d'origine
                                                                                  €198.25Price
                                                                                  En Stock
                                                                                  €174.00 Price
                                                                                  En Stock
                                                                                  €174.00 Price
                                                                                  Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                                                                                      Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                      €174.00Price
                                                                                      Joint de Culasse renforcé Cometic Megane 3 RS 1.9Joint de Culasse renforcé Cometic Megane 3 RS 1.9
                                                                                          Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 1.9 mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                          €174.00Price
                                                                                          Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                              Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                              €265.93Price
                                                                                              Carter Huile Clio 3 RS - Megane 3 RS - Megane 2 RSOEM Renault Oil Pan - Clio 3 RS, Megane 2 RS, Megane 3 RS
                                                                                                  Don't gamble with your engine's lubrication. This genuine Renault OEM oil pan is the only component that guarantees a perfect seal and thermal resistance meeting the strict requirements of your Renault Clio 3 RS , Megane 2 RS , or Megane 3 RS . By choosing this certified part, you avoid micro-cracks and warping issues common in...
                                                                                                  €265.93Price
                                                                                                  En Stock
                                                                                                  €3.16 Price
                                                                                                  En Stock
                                                                                                  €3.16 Price
                                                                                                  Clip maintien support linguet Twingo R2 195/205
                                                                                                      Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                                                      €3.16Price
                                                                                                      Clip maintien support linguet Twingo R2 195/205
                                                                                                          Clip maintien support linguet Twingo R2 195/205 Référence: 7711167614
                                                                                                          €3.16Price
                                                                                                          En Stock
                                                                                                          €133.31 Price
                                                                                                          En Stock
                                                                                                          €133.31 Price
                                                                                                          Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                              Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                              €133.31Price
                                                                                                              Joint de Culasse renforcé CometicJoint de Culasse renforcé Cometic
                                                                                                                  Joint de culasse Cometic. Alésage du joint 83mm épaisseur du joint 0.75mm Haute résistance. Composés de trois feuilles d'acier inoxydable pour améliorer la solidité et la résistance à la corrosion. D'autres alesages et épaisseur disponibles, nous contacter.
                                                                                                                  €133.31Price
                                                                                                                  En Stock
                                                                                                                  €36.05 Price
                                                                                                                  En Stock
                                                                                                                  €36.05 Price
                                                                                                                  Jeu de Bougies Renault Clio 16S
                                                                                                                      Jeu de Bougies Renault (fabriqué par NGK) (Vendu par 4) pour Clio 16S Produit d'origine Renault
                                                                                                                      €36.05Price
                                                                                                                      Jeu de Bougies Renault Clio 16S
                                                                                                                          Jeu de Bougies Renault (fabriqué par NGK) (Vendu par 4) pour Clio 16S Produit d'origine Renault
                                                                                                                          €36.05Price
                                                                                                                          Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                                              The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                                              €16.92Price
                                                                                                                              Bague étanchéité arbre à cames Twingo R2Twingo RS (R1/R2) Exhaust Camshaft Oil Seal - Original
                                                                                                                                  The original Renault exhaust camshaft oil seal is an essential sealing part for your Renault Twingo RS, Twingo R1 , or Twingo R2 . It ensures a tight seal between the camshaft, cylinder head, and valve cover, preserving your engine's performance and reliability.
                                                                                                                                  €16.92Price
                                                                                                                                  En Stock
                                                                                                                                  €50.86 Price
                                                                                                                                  En Stock
                                                                                                                                  €50.86 Price
                                                                                                                                  Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                                                      €50.86Price
                                                                                                                                      Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                                                          Manchon pipe de remplissage réservoir Twingo 2 RS
                                                                                                                                          €50.86Price
                                                                                                                                          En Stock
                                                                                                                                          €80.84 €115.49 Regular price -30% off Price
                                                                                                                                          En Stock
                                                                                                                                          €80.84 €115.49 Regular price -30% off Price
                                                                                                                                          Jeu de Bougies Origine Megane 3 RS et N4
                                                                                                                                              Do not let poor combustion stifle the potential of your F4RT engine. This set of 4 genuine Renault spark plugs is specifically calibrated to meet the extreme thermal demands of the Renault Megane 3 RS (250, 265, and 275 hp). By choosing these manufacturer-certified plugs, you avoid misfires under full load and protect your cylinders from the risks of...
                                                                                                                                              €80.84€115.49Regular price-30% offPrice
                                                                                                                                              Jeu de Bougies Origine Megane 3 RS et N4
                                                                                                                                                  Do not let poor combustion stifle the potential of your F4RT engine. This set of 4 genuine Renault spark plugs is specifically calibrated to meet the extreme thermal demands of the Renault Megane 3 RS (250, 265, and 275 hp). By choosing these manufacturer-certified plugs, you avoid misfires under full load and protect your cylinders from the risks of...
                                                                                                                                                  €80.84€115.49Regular price-30% offPrice
                                                                                                                                                  En Stock
                                                                                                                                                  €224.35 Price
                                                                                                                                                  En Stock
                                                                                                                                                  €224.35 Price
                                                                                                                                                  Kit Joint Refection moteur Origine Clio 2 RS
                                                                                                                                                      Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                                                                                                      €224.35Price
                                                                                                                                                      Kit Joint Refection moteur Origine Clio 2 RS
                                                                                                                                                          Ensemble de joints nécéssaire au bon remontage du moteur de Clio 2 RS Véritable produit d'origine La photo ne comporte pas les joints spy d'arbres à cames mais ceux ci sont bien fournis
                                                                                                                                                          €224.35Price
                                                                                                                                                          En Stock
                                                                                                                                                          €1,326.07 Price
                                                                                                                                                          En Stock
                                                                                                                                                          €1,326.07 Price
                                                                                                                                                          AAC Admission loi 286TR2A2 Twingo R2 205
                                                                                                                                                              AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                                                                                                                              €1,326.07Price
                                                                                                                                                              AAC Admission loi 286TR2A2 Twingo R2 205
                                                                                                                                                                  AAC Admission loi 286TR2A2 Twingo R2 205 Référence: 7711167674
                                                                                                                                                                  €1,326.07Price
                                                                                                                                                                  Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                      Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                      €17.09Price
                                                                                                                                                                      Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2Bague étanchéité électrovanne déphasage Twingo RS, R1 et R2
                                                                                                                                                                          Bague étanchéité électrovanne de déphasage Twingo RS, R1 et R2
                                                                                                                                                                          €17.09Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €66.99 Price
                                                                                                                                                                          En Stock
                                                                                                                                                                          €66.99 Price
                                                                                                                                                                          Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                                              The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                                              €66.99Price
                                                                                                                                                                              Injecteur Clio 3 RS et X85 Cup
                                                                                                                                                                                  The original Renault injector is an essential part to ensure precise fuel injection in the engine of your Renault Clio 3 RS and Renault Clio 3 X85 Cup . It ensures optimal combustion and reliable engine performance.
                                                                                                                                                                                  €66.99Price
                                                                                                                                                                                  Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                                                                                                      Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                                                                                                      €4.72Price
                                                                                                                                                                                      Genuine RENAULT Oil Drain Plug - All Clio/Mégane RS Models
                                                                                                                                                                                          Protect your engine against critical leaks! Replace your genuine oil drain plug with this RENAULT reference, essential for all Clio RS , Mégane RS models and competition derivatives (Gr N, R3, X85 Cup). A quality screw guarantees the seal of the oil pan (sump), preventing a ...
                                                                                                                                                                                          €4.72Price