Home » Aluminum Fuel Rail Kit for VW Golf MK4 and Audi A4 1.8T 20V 99-04

Aluminum Fuel Rail Kit for VW Golf MK4 and Audi A4 1.8T 20V 99-04

SKU: 1005010381998940-black
Color
€85,65
-38% €137,04 €85,65

Upgrading your fuel delivery system requires precision engineering to handle increased boost and horsepower demands. This billet aluminum fuel rail kit delivers consistent, high-volume fuel flow directly to the injectors on 1999–2004 VW Golf MK4 and 2002–2004 Audi A4 1.8T 20V engines. Factory steel rails often restrict flow under heavy tuning, leading to lean conditions and hesitation. This direct bolt-on replacement eliminates those bottlenecks, keeping your air-fuel ratio stable during aggressive modifications. Built from CNC machined billet aluminum, the unit features a standardized 5/16-inch internal bore that minimizes pressure drops and ensures rapid throttle response.

Benefits & Practical Tips

  • The extra inlet and outlet ports allow you to route custom fuel lines around chassis components, keeping hoses tidy and away from exhaust heat.
  • If your setup already uses -10 AN fittings, attach ORB-08 to AN-10 adapters to maintain a secure, leak-resistant connection without drilling new holes.
  • Always verify fuel pressure gauge readings immediately after startup to confirm the upgraded rail matches your tuner’s target PSI baseline.

Product Specifications

  • Material: CNC-machined billet aluminum
  • Internal Bore Diameter: 5/16 inch
  • Port Configuration: ORB-08 compact connections plus two auxiliary inlet/outlet ports
  • Vehicle Compatibility: 1999–2004 VW Golf MK4; 2002–2004 Audi A4 1.8T 20V
  • Mounting Position: Front placement
  • Unit Weight: 0.47 kg
  • Available Language Support: English

Package Includes

  • 1x Billet aluminum fuel rail assembly
  • Complete mounting hardware and end caps
  • Port sealing plugs for unused connections

Warnings & Reminders

This performance fuel rail is engineered specifically for modified or high-boost applications that exceed factory power output. Verify that your current fuel pump and pressure regulator can handle the increased flow before installation. Professional fitting is strongly advised to confirm fuel pressure stability and hose integrity prior to dynamometer or engine tuning.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Delivering tested performance parts to European drivers since 2002 at intercyprus.com — backed by straightforward returns and verified fitment data.