Delphi EX631059 Fuel Injector

Delphi EX631059 Fuel Injector Overview

Delphi EX631059 is a remanufactured diesel fuel injector built as a standard replacement for light-duty diesel injector systems. It draws on Delphi’s OE heritage and decades of supplier experience to deliver a direct-fit service part for select Audi and Volkswagen diesel applications.

• Fuel type: diesel
• Remanufactured standard replacement injector
• Light duty diesel injector system type
• Threaded attachment method
• Metal body construction
• Package contents: fuel injector and instruction sheet

Application and Fitment

Compatible with 1981-1983 Volkswagen Jetta, 1981-1983 Volkswagen Rabbit Pickup, and 1982-1983 Audi 4000. Delphi EX631059 is a fitment-based replacement for diesel fuel injection service on these vehicles, including Volkswagen Jetta diesel injector replacement and Audi 4000 fuel injector service applications.

This part cross-references Standard Ignition (e.g., 27604, FJ623) for the same application.

What This Injector Helps Address

• Hard starting caused by a worn diesel injector
• Rough idle from inconsistent fuel delivery
• Loss of power related to poor atomization
• Excess smoke from inefficient injector performance
• Fuel delivery issues in light-duty diesel systems

Installation Notes

Delphi EX631059 uses a threaded attachment method and does not include mounting hardware, a gasket or seal, or retainer clips. Inspect the sealing surfaces, fuel lines, and injector bore before installation, and follow the included instruction sheet for proper service procedures. Verify vehicle application by year, make, and model before ordering.

Quality Assurance

Delphi builds aftermarket parts using OE experience and knowledge developed through long-term supplier relationships with major automakers. EX631059 is a remanufactured fuel injector made to support standard replacement service for diesel applications.