Delphi Fuel Injection Pressure Regulator P/N:FP10384
Delphi FP10021 fuel injection pressure regulator for the 1999-2003 Chevrolet Silverado 1500 V8 5.3L, the 1999-2005 Silverado 1500 V8 4.8L, the 2003 Silverado 1500 V8 6.0L and other vehicles regulates fuel pressure in the injection system. It holds that pressure steady as engine demand changes.
Hard starting, a rough idle or uneven power can mean the regulator is worn, though a weak fuel pump or a clogged fuel filter can be behind the same complaints.
The 1999-2003 GMC Sierra 1500 V8 5.3L, the 1999-2005 Sierra 1500 V8 4.8L, the 2000-2003 Chevrolet Tahoe V8 5.3L and the 2000-2005 Tahoe V8 4.8L are among the vehicles this regulator fits, at one regulator per vehicle. Open the "Vehicles it fits" section and enter your exact model and engine to see whether yours is covered.
Is the Delphi FP10021 right for the 1999-2003 GMC Sierra 1500 V8 5.3L?
Yes. The Delphi FP10021 fits the 1999-2003 GMC Sierra 1500 V8 5.3L, and the truck takes one. For another model or engine, open the "Vehicles it fits" section.
Can the Delphi FP10021 handle high-ethanol fuel?
Yes. The Delphi FP10021 has Nitrile™ diaphragms that are resilient against high-ethanol fuels, and its diaphragm materials suit a wide range of fuels.
Is this fuel injection pressure regulator noisy in operation?
No. It is made for quiet operation, with no audible regulator noise.
What signs can show a fuel pressure regulator is wearing out?
A fuel smell, poor fuel economy or black exhaust smoke can be signs of a worn regulator. Testing fuel pressure means working on a live fuel system, so a shop can do it.
How does this regulator keep fuel pressure steady?
This regulator's precisely manufactured internal valves, diaphragms and springs are made for performance under all engine operating conditions, and it keeps pressure consistent and predictable across the system's range of control.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.