AEM's Honda/Acura Adjustable Fuel Pressure Regulator supports enough fuel flow for engines up to 1,000 horsepower. A patented interchangeable discharge port design lets the regulator's output be matched to the output of any fuel pump; a single large discharge orifice is included. AEM includes a custom barb fitting to accommodate the factory fuel hose, and the base of the regulator is tapped to accept a -6 AN or 9/16"x18 fitting. No additional parts are required for installation.
WarrantyInstallation Instructions
Specifications:
- Patented interchangeable discharge orifices match output of virtually any fuel pump (single large port included)
- Mounts directly to O.E. fuel rail or AEM High Volume Fuel Rail
- Adjustable from 20 psi to maximum fuel pump capacity
- Boost-dependent rising fuel pressure rate (1:1)
- No additional parts required for installation
- CNC-machined from 6061-T6 billet aluminum
- Accepts a -6 AN or 9/16"x18 fitting
- Patent # 6,298,828
- Part Number: 25-303BK
Vehicle Applications
- 1990 Acura Integra GS
- 1991 Acura Integra GS
- 1992 Acura Integra GS
- 1993 Acura Integra GS
- 1992 Acura Integra GS-R
- 1993 Acura Integra GS-R
- 1986 Acura Integra LS
- 1987 Acura Integra LS
- 1988 Acura Integra LS
- 1989 Acura Integra LS
- 1990 Acura Integra LS
- 1991 Acura Integra LS
- 1992 Acura Integra LS
- 1993 Acura Integra LS
- 1987 Acura Integra LS Special Edition
- 1988 Acura Integra LS Special Edition
- 1986 Acura Integra RS
- 1987 Acura Integra RS
- 1988 Acura Integra RS
- 1989 Acura Integra RS
- 1990 Acura Integra RS
- 1991 Acura Integra RS
- 1992 Acura Integra RS
- 1993 Acura Integra RS
- 1991 Acura Legend L
- 1992 Acura Legend L
- 1993 Acura Legend L
- 1994 Acura Legend L
- 1995 Acura Legend L
- 1991 Acura Legend LS
- 1992 Acura Legend LS
- 1993 Acura Legend LS
- 1994 Acura Legend LS
- 1995 Acura Legend LS
- 1999 Acura NSX Alex Zanardi Edition
- 1991 Acura NSX Base
- 1992 Acura NSX Base
- 1993 Acura NSX Base
- 1994 Acura NSX Base
- 1995 Acura NSX Base
- 1996 Acura NSX Base
- 1997 Acura NSX Base
- 1998 Acura NSX Base
- 1999 Acura NSX Base
- 2000 Acura NSX Base
- 2001 Acura NSX Base
- 1995 Acura NSX T
- 1996 Acura NSX T
- 1997 Acura NSX T
- 1998 Acura NSX T
- 1999 Acura NSX T
- 2000 Acura NSX T
- 2001 Acura NSX T
- 2002 Acura NSX T
- 1995 Acura TL Base
- 1996 Acura TL Base
- 1997 Acura TL Base
- 1998 Acura TL Base
- 1995 Acura TL Premium
- 1996 Acura TL Premium
- 1997 Acura TL Premium
- 1998 Acura TL Premium
- 1992 Acura Vigor GS
- 1993 Acura Vigor GS
- 1994 Acura Vigor GS
- 1992 Acura Vigor LS
- 1993 Acura Vigor LS
- 1994 Acura Vigor LS
- 1990 Honda Civic EX
- 1991 Honda Civic EX
- 1988 Honda Civic RT 4WD
- 1989 Honda Civic RT 4WD
- 1990 Honda Civic RT 4WD
- 1991 Honda Civic RT 4WD
- 1989 Honda Civic Si
- 1990 Honda Civic Si
- 1991 Honda Civic Si
- 1988 Honda CRX HF
- 1989 Honda CRX HF
- 1990 Honda CRX HF
- 1991 Honda CRX HF
- 1988 Honda CRX Si
- 1989 Honda CRX Si
- 1990 Honda CRX Si
- 1991 Honda CRX Si
- 2000 Honda Insight Base
- 2001 Honda Insight Base
- 2002 Honda Insight Base
- 1997 Honda Prelude Base
- 1998 Honda Prelude Base
- 1999 Honda Prelude Base
- 2000 Honda Prelude Base
- 2001 Honda Prelude Base
- 1995 Honda Prelude SE
- 1992 Honda Prelude Si
- 1993 Honda Prelude Si
- 1994 Honda Prelude Si
- 1995 Honda Prelude Si
- 1996 Honda Prelude Si
- 1992 Honda Prelude Si 4WS
- 1993 Honda Prelude Si 4WS
- 1997 Honda Prelude Type SH
- 1998 Honda Prelude Type SH
- 1999 Honda Prelude Type SH
- 2000 Honda Prelude Type SH
- 2001 Honda Prelude Type SH
- 1993 Honda Prelude VTEC
- 1994 Honda Prelude VTEC
- 1995 Honda Prelude VTEC
- 1996 Honda Prelude VTEC
FAQ
What does AEM's adjustable fuel pressure regulator do?
It lets output pressure be adjusted from 20 psi up to the fuel pump's maximum capacity, using a patented interchangeable discharge orifice that can be matched to different fuel pumps, with a boost-dependent 1:1 rising fuel pressure rate.
What is included and how does it mount?
It mounts directly to the OE fuel rail or an AEM High Volume Fuel Rail, includes a barb fitting for the factory fuel hose, and its base is tapped to accept a -6 AN or 9/16"x18 fitting.
Which vehicles does part 25-303BK fit?
It fits Acura Integra, Legend, NSX, TL and Vigor (86-93 era), 1988-1991 Honda Civic/CRX, Honda Insight, and 1992-2001 Honda Prelude; see the Vehicle Applications section for exact year/trim coverage.