Delphi Fuel Injection Pressure Regulator P/N:FP10494
Delphi FP10300 fuel injection pressure regulator for the 2000-2005 Chevrolet Impala V6 3.4L and other vehicles controls the fuel pressure at the injectors.
A regulator that no longer holds pressure can show up as hard starting, rough running or a fuel smell. These signs alone do not prove the regulator is at fault, since a worn fuel pump can also produce similar trouble.
The part is listed for a wide range of Chevrolet, Pontiac, Buick and Oldsmobile models, led by the 2000-2005 Chevrolet Impala V6 3.4L, the 2000-2003 Chevrolet Malibu and the 2000-2005 Pontiac Montana. Each takes one regulator.
Fit and size
Build and materials
Interchange: 143-451 · 800-321 · 800-346 · 800-347
17113622 · 2171558 · 5G1043 · 23022 · 23091 · 23092 · 219746 · 25336517 · PR209 · PR234 · PR235 · PR143 · PR151
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This part cross-references / interchanges with the following part numbers:
Is the Delphi FP10300 regulator right for the 2000-2005 Chevrolet Impala V6 3.4L?
Yes. The Delphi FP10300 is listed for the 2000-2005 Chevrolet Impala V6 3.4L, and that car takes one. To check a different car, look it up in the "Vehicles it fits" section.
Will the diaphragm in this regulator handle high-ethanol fuel?
Yes. The Nitrile™ diaphragms in the Delphi FP10300 are resilient against high-ethanol fuels, and the diaphragm materials are made to work with a wide range of fuels.
Does this fuel injection pressure regulator make any noise?
No. This regulator is made for quiet operation, with no audible regulator noise.
Is the Delphi FP10300 interchangeable with part number PR209?
Yes. PR209 is one of the numbers listed as interchanging with the Delphi FP10300, along with 143-451, 800-321 and others on the Interchange line.
Can hard starting or rough running come from a worn fuel injection pressure regulator?
Yes, they can, because the regulator sets the fuel pressure at the injectors. If you smell fuel or see a leak, have the car checked promptly.
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