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4 V8 2008 - 2010 Ford F-450 Super Duty King Ranch 391/6
6L V8 1977 - 1980 Chevrolet K30 400/6
Applications: 1997-2001 Ford F-150
2007-2011 Jeep Wrangler 231 CID
Covered by our Limited Lifetime Warranty
Holley Chrome Carbureted Fuel Pressure Regulator 4.5-9 PSI M/P #12-803 programmers-and-tuners 4 V8 2008 - 2010Overview: Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre set at the factory so
