Delphi EX631066 Fuel Injector

Delphi EX631066 Diesel Fuel Injector

The Delphi EX631066 is a remanufactured diesel fuel injector built for light-duty diesel fuel injection systems. It is a direct-fit replacement for select 2003 Dodge Sprinter 2500 and Sprinter 3500 applications, with OE-based engineering informed by Delphi’s long history supplying original equipment to major automakers.

Use this injector when you need precise fuel delivery support for a 2003 Dodge Sprinter 2500 or 2003 Dodge Sprinter 3500. The Delphi EX631066 combines a metal and plastic body, threaded attachment method, oval female connector, and a blade-style 2-terminal design for the specified diesel application.

• Brand: Delphi
• Part number: EX631066
• Fuel type: Diesel
• System type: Light duty diesel injector
• Item grade: Standard replacement
• Remanufactured injector for OE-style service replacement
• Connector shape: Oval
• Connector gender: Female
• Terminal type: Blade
• Terminal quantity: 2
• Attachment method: Threaded
• Body material: Metal and plastic
• Gasket or seal included: Yes

Detailed Product Information

Delphi builds this injector using OE heritage and application knowledge developed over decades of original equipment experience. The EX631066 is intended for diesel fuel injection service where accurate atomization and consistent fuel delivery are required. It cross-references Bosch 0986435053 for the same application and also aligns with other listed aftermarket references, including Standard Ignition FJ921.

Compatible With 2003 Dodge Sprinter 2500 and 2003 Dodge Sprinter 3500 diesel applications, this injector is a practical replacement choice when restoring fuel system performance on the Sprinter platform. The included seal helps support proper installation at the injector interface.

What This Injector Helps Address

• Hard starting caused by worn diesel injector performance
• Rough idle from inconsistent fuel delivery
• Loss of power related to poor injector atomization
• Excessive smoke from inefficient combustion
• Fuel system service needs on 2003 Dodge Sprinter 2500 and 3500 models

Installation Notes and Tips

Verify connector shape, terminal count, and threaded mounting before installation. Clean the injector bore and surrounding area thoroughly, and replace any disturbed sealing surfaces as needed. Follow the vehicle service procedure for diesel injector coding, torque specifications, and fuel system bleeding if required by the application.

Quality Assurance

Delphi’s OE background and aftermarket engineering are built into this remanufactured fuel injector. The EX631066 is produced as a standard replacement part for diesel service applications and includes a gasket or seal for installation support.