Holley EFI Fuel Pressure Regulator Boost Compensating 15-65 PSI With -6AN/ -8AN O-Rings Universal
Highlights
- Adjustable from 15 to 65 PSI
- For Hot Street/Race EFI
- Regulates Extreme Fuel Flow
- Made in the USA!
Holley 15-65 PSI Adjustable Boost Compensating EFI Fuel Pressure Regulator with -6AN and -AN O-Rings for Universal Hot Street and Race EFI Applications.
This 2-port 1:1 boost compensating Fuel Pressure Regulator from Holley is capable of handling high fuel demands on naturally aspirated EFI, turbo, supercharged, and nos race applications. It uses -8AN and -6AN O-ring fittings so it can work with braided steel fuel lines. It's also designed for use with an electric EFI fuel pump. This FPR (512-504-5) is adjustable from 15 to 65 PSI plus boost reference and has a gauge port and a mounting bracket built right in. It's made in the USA from billet aluminum with a black finish.
Features and Benefits:
- For naturally aspirated EFI, turbo, supercharged, & nos race applications
- Precision adjustable to regulate high fuel demands
- Adjustable from 15 to 65 psi + boost reference
- Features -8AN & -6AN O-ring fittings
- Adaptable to work with braided steel fuel lines
- CNC-machined billet aluminum construction
- Black anodized finish
- Made in the USA!
California Residents: Proposition 65 Warning
Related Categories: Mustang Parts, Mustang Engine, Mustang Fuel Lines, Mustang Fuel Pressure Regulators, Ford F-100 Parts

Vehicle Fitment
This product will fit the following C10 years:
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
- 1980,
- 1981,
- 1982,
- 1983,
- 1984,
- 1985,
- 1986,
- 1987,
This product will fit the following F-100 years:
- 1948,
- 1949,
- 1950,
- 1951,
- 1952,
- 1953,
- 1954,
- 1955,
- 1956,
- 1957,
- 1958,
- 1959,
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
This product will fit the following Mustang years: