Delphi FP10401 fuel injection pressure regulator for the 1987-1994 Ford F-150 6-cylinder 4.9L and other vehicles controls the fuel pressure in the injection system. This Delphi fuel injection pressure regulator helps the injectors work from a steady supply.
- Nitrile™ diaphragms resist high-ethanol fuels
- Two regulator designs help meet emissions standards
- Precisely manufactured internal valves, diaphragms and springs for performance under all engine operating conditions
- Quiet operation with no audible regulator noise
- Consistent, predictable fuel pressure throughout the system's range of control
Quick facts
- Part: Delphi FP10401 fuel injection pressure regulator
- Fits: 1987-1994 Ford F-150 6-cylinder 4.9L and other vehicles
A worn regulator can show up as rough idle or poor fuel economy. Before you replace the regulator, rule out a weak fuel pump, a clogged fuel filter or a vacuum leak, since each can cause rough running too.
Fits
It is listed for a wide range of Ford models, led by the 1987-1994 Ford F-150 6-cylinder 4.9L, the 1994-1995 Ford Mustang V8 5.0L and the 1987-1994 Ford F-250 6-cylinder 4.9L. Each engine takes one regulator. If your vehicle is not named here, enter its year, make and model in the "Vehicles it fits" section to see whether it is listed.
Specifications
- Quantity per vehicle: 1
- Engines: L4-2.3L, L6-4.9L, V8-5.0L
- System pressure: 52
- Diaphragm: Nitrile™
Interchange: 217-2128 · E4TZ 9C968-A · E7TE 9C968-EA · E7TZ 9C968-E · F1DE 9C968-AA · F1DZ 9C968-A · F4TE 9C968-AA · F4TZ 9C968-A · 800-130 · 255-1006
5G1138 · 21863 · PR18 · PR204
This part cross-references / interchanges with the following part numbers:
217-2128, 5G1138, 21863, E4TZ 9C968-A, E7TE 9C968-EA, E7TZ 9C968-E, F1DE 9C968-AA, F1DZ 9C968-A, F4TE 9C968-AA, F4TZ 9C968-A, 800-130, PR18, 255-1006, PR204
Frequently Asked Questions
Does the Delphi FP10401 fit the 1994-1995 Ford Mustang V8 5.0L?
Yes. Delphi FP10401 is listed for the 1994-1995 Ford Mustang V8 5.0L, which takes one regulator; for other cars, search your year, make and model in the "Vehicles it fits" section.
Are the diaphragms in the Delphi FP10401 made to handle ethanol fuels?
Yes. They are Nitrile™ diaphragms, which resist high-ethanol fuels, and the diaphragm materials suit a wide range of fuels.
Will the Delphi FP10401 regulator make audible noise?
No. This regulator is designed to run quietly, with no regulator noise you can hear.
What other signs can point to a failing fuel pressure regulator?
Hard starting or a fuel smell can be signs of a worn regulator. A shop can test fuel pressure against the listed system pressure of 52, and a fuel smell should be checked promptly.
Does Delphi FP10401 replace number E7TZ 9C968-E?
Yes. E7TZ 9C968-E is one of the cross-reference numbers for Delphi FP10401; the rest are on the Interchange line.
