Delphi EX631045 fuel injector for the 2001-2004 Chevrolet Silverado 2500 HD V8 6.6L and other vehicles sprays fuel into the engine for combustion. This Delphi fuel injector is a standard-replacement part for light-duty diesel systems, and all Delphi injectors are tested using OE methodologies.
- 100% O-ring replacement
- No internal seal rings, which minimizes leakage
- Recessed fuel exit that minimizes possible plugging
- Reduced spray variation and an accurate fuel spray pattern for emissions and cold starting
- Thermally isolates fuel from the engine by drawing manifold heat away from the fuel rail, which helps prevent hesitation from vapor lock
Quick facts
- Part: Delphi EX631045 fuel injector
- Fits: the 2001-2004 Chevrolet Silverado 2500 HD V8 6.6L and other vehicles
Hard cold starts, hesitation or fuel leaking at the injector can mean an injector is worn. Before you replace one, rule out other causes of those symptoms, such as the fuel supply or electrical faults, so you end up fixing the right part.
Fits
This injector is listed for a range of Chevrolet and GMC models, including the 2001-2004 Chevrolet Silverado 3500 V8 6.6L and the 2001-2004 GMC Sierra 2500 HD V8 6.6L, and each takes eight. If your vehicle is not named here, look it up in the "Vehicles it fits" section, where the other vehicles are listed.
Specifications
Fit and size
- Quantity per vehicle: 8
- Engine: V8-6.6L
Build and materials
- System type: Light Duty - Diesel Injector
- Item grade: Standard Replacement
In the box
One fuel injector and one instruction sheet.
Interchange: 800-1503
4G1944R · 63877 · 732502 · 0986435502 · 2J101 · DL1202 · 238878 · INJ135R · 97720661 · 97729095 · 986435502 · FJ495 · M1102R
This part cross-references / interchanges with the following part numbers:
4G1944R, 63877, 732502, 0986435502, 2J101, DL1202, 238878, INJ135R, 97720661, 97729095, 986435502, 800-1503, FJ495, M1102R
Frequently Asked Questions
Is this the right fuel injector for a 2001-2004 GMC Sierra 2500 HD V8 6.6L?
Yes. Delphi EX631045 is listed for the 2001-2004 GMC Sierra 2500 HD V8 6.6L, and that truck takes eight injectors.
What comes with the Delphi EX631045 fuel injector?
The package contents are the fuel injector and an instruction sheet.
Does the spray pattern on Delphi diesel injectors like this one affect cold starts?
Yes. On the Delphi EX631045, reduced spray variation and an accurate fuel spray pattern mean better emissions and cold start capabilities.
What signs can point to a worn diesel injector like the Delphi EX631045?
Hard cold starts, hesitation or fuel leaking at the injector can mean it is worn. A shop can test the injector to confirm.
Does the Delphi EX631045 interchange with 800-1503?
Yes. 800-1503 is one of the numbers this injector replaces, along with the other numbers on the Interchange line.
