Delphi FP10389 fuel injection pressure regulator for the 2004-2005 Chevrolet Colorado 4-cylinder 2.8L or 5-cylinder 3.5L and other vehicles controls the fuel pressure in the injection system.
- Nitrile™ diaphragms resist high-ethanol fuels
- Precisely manufactured internal valves, diaphragms and springs for performance under all engine operating conditions
- Quiet operation with no audible regulator noise
- Diaphragm materials give longer life and compatibility with a wide range of fuels
- Consistent, predictable fuel pressure throughout the system's range of control for good drivability
Quick facts
- Part: Delphi FP10389 fuel injection pressure regulator
- Fits: 2004-2005 Chevrolet Colorado 4-cylinder 2.8L or 5-cylinder 3.5L and other vehicles
A failing pressure regulator can show up as hard starting, a rough idle or poor drivability. A weak fuel pump, a clogged fuel filter or leaking injectors can produce similar signs, so find out which part is at fault before you buy. If the regulator is the cause, this one replaces it.
Fits
Along with the Colorado, this regulator fits the 2004-2005 GMC Canyon 4-cylinder 2.8L or 5-cylinder 3.5L and the 2006 Isuzu I-280.
Specifications
- Quantity per vehicle: 1
- Diaphragm material: Nitrile™
- Fuel compatibility: high-ethanol fuels
In the box
One fuel injection pressure regulator. The vehicle takes one.
Interchange: 217-1564 · 8-88984-221-0 · 800-428
5G1468 · 23077 · 88984221 · PR316 · PR4239
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
217-1564, 5G1468, 23077, 88984221, 8-88984-221-0, 800-428, PR316, PR4239
Frequently Asked Questions
Does the Delphi FP10389 fit a 2004-2005 Chevrolet Colorado with the 5-cylinder 3.5L?
Yes. Delphi FP10389 fits the 2004-2005 Chevrolet Colorado with either the 4-cylinder 2.8L or the 5-cylinder 3.5L engine.
Is this Delphi fuel injection pressure regulator suited to high-ethanol fuels?
Yes. Its Nitrile™ diaphragms resist high-ethanol fuels, and the diaphragm materials are also compatible with a wide range of other fuels.
Will the FP10389 regulator make audible noise in operation?
No. The FP10389 is built for quiet operation, with no audible regulator noise.
What can a worn FP10389 fuel pressure regulator cause?
Hard starting, a rough idle or poor drivability can be signs of a regulator that is not holding fuel pressure in range.
Is 800-428 a cross-reference for the Delphi FP10389?
Yes. 800-428 is one of the numbers the Delphi FP10389 replaces, along with 217-1564, 5G1468 and PR316; every cross-reference is on the Interchange line.
