Delphi EX634763 fuel injector for the 2004-2006 GMC C8500 Topkick 6-cylinder 7.2L and other vehicles sprays fuel into the engine for combustion. This Delphi fuel injector is a medium-duty part, built to OE specifications for fit, form and function and tested using OE methodologies.
- 100% O-ring replacement
- All Delphi injectors are tested
- No internal seal rings, which minimizes leakage
- Recessed fuel exit to minimize possible plugging
- Reduced spray variation and an accurate fuel spray pattern
- Draws manifold heat away from the fuel rail to thermally isolate the fuel and help prevent hesitation from vapor lock
Quick facts
- Part: Delphi EX634763 fuel injector
- Fits: the 2004-2006 GMC C8500 Topkick 6-cylinder 7.2L and other vehicles
- Condition: New
Hard starting, rough running or fuel leaking at the injector can be signs of a worn injector. Before you replace it, rule out the fuel supply and the electrical connections, since other faults can produce those symptoms as well.
Fits
This injector is a direct-fit replacement for the 2008-2009 Roadmaster Rail AE-Stacked Rail 6-cylinder 7.2L and the 2004-2009 Chevrolet C6500 Kodiak 6-cylinder 7.2L, along with many other trucks, buses and chassis. If yours is not named here, look up your own vehicle in the "Vehicles it fits" section to see its years and engine.
Specifications
Fit and size
- Engine: L6-7.2L
- Quantity per vehicle: 6
- System type: Medium Duty
Build and materials
- Trim code: CD
- O-rings: 4, located on the injector
- Condition: New
In the box
One fuel injector with trim code CD, four O-rings located on the injector and an instruction sheet. This listing is one injector; each engine takes six.
Interchange: 10R-4763 · 233-3535 · 236-0974 · 238-8091 · 241-3400 · 295-1410 · 328-2582 · 387-9428
20R8059
This part cross-references / interchanges with the following part numbers:
10R4763, 10R-4763, 20R8059, 233-3535, 236-0974, 238-8091, 241-3400, 295-1410, 328-2582, 387-9428
Frequently Asked Questions
Does the Delphi EX634763 fuel injector fit the 2004-2006 GMC C8500 Topkick 6-cylinder 7.2L?
Yes. Delphi EX634763 is listed for the 2004-2006 GMC C8500 Topkick 6-cylinder 7.2L, and that engine takes six injectors.
Do these Delphi diesel injectors come with O-rings?
Yes. The Delphi EX634763 comes with four O-rings located on the injector, plus trim code CD and an instruction sheet.
Why does this injector have no internal seal rings?
Delphi EX634763 is built without internal seal rings, which minimizes leakage. Its recessed fuel exit minimizes possible plugging.
How does this injector's spray pattern affect cold starts?
Reduced spray variation and an accurate fuel spray pattern mean better emissions and cold start capabilities.
Does the Delphi EX634763 replace the 10R-4763 injector?
Yes. 10R-4763 is one of the other numbers on the Interchange line that Delphi EX634763 replaces.
