AEM's Honda/Acura Adjustable Fuel Pressure Regulators are capable of supporting enough fuel flow for engines up to 1000 horsepower. Our patented interchangeable discharge ports enable the regulator's output to match the output of any fuel pump. A single large discharge orifice is included, additional ports are sold separately). AEM includes a custom barb fitting to accommodate the factory fuel hose and the base of each regulator is tapped to accept a -6 AN or 9/16"x18 fittings.

Features

CNC-machined from 6061-T6 billet aluminum
Mounts directly to O.E. fuel rail or AEM High Volume Fuel Rail
Patented interchangeable discharge orifices match output of virtually any fuel pump (single large port included)
Accept a -6 AN or 9/16”x18 fittings
Adjustable from 20 psi to maximum fuel pump capacity
Boost dependent rising fuel pressure rate (1:1)
No additional parts required for installation
Patent # 6,298,828

Application

PART #	MAKE	YEAR	MODEL	ENGINE	NOTES
25-300BK	Acura	1997-2001	Integra GS	1.8L/1834ccL4 [B18B1]
25-300BK	Acura	1994-2001	Integra GS-R	1.8L/1797ccL4 [B18C1]
25-300BK	Acura	1994-2001	Integra LS	1.8L/1834ccL4 [B18B1]
25-300BK	Acura	1994-1998	Integra RS	1.8L/1834ccL4 [B18B1]
25-300BK	Acura	1995-1996	Integra Special Edition	1.8L/1834ccL4 [B18B1]
25-300BK	Acura	1997-1998	Integra Type R	1.8L/1797ccL4 [B18C5]
25-300BK	Acura	2000-2001	Integra Type R	1.8L/1797ccL4 [B18C5]
25-300BK	Honda	1993	Accord 10th Anniversary	2.2L/2156ccL4 [F22A1]	Must use AEM Fuel Rail
25-300BK	Honda	1990-1993	Accord DX	2.2L/2156ccL4 [F22A1]	Must use AEM Fuel Rail
25-300BK	Honda	1990-1991	Accord EX	2.2L/2156ccL4 [F22A1]	Must use AEM Fuel Rail
25-300BK	Honda	1990-1991	Accord EX	2.2L/2156ccL4 [F22A4]	Must use AEM Fuel Rail
25-300BK	Honda	1991-1993	Accord EX	2.2L/2156ccL4 [F22A6]	Must use AEM Fuel Rail
25-300BK	Honda	1990-1993	Accord LX	2.2L/2156ccL4 [F22A1]	Must use AEM Fuel Rail
25-300BK	Honda	1986	Accord LXi	2.0L/1955ccL4 [BT]
25-300BK	Honda	1987-1989	Accord LXi	2.0L/1955ccL4 [A20A3]
25-300BK	Honda	1991	Accord SE	2.2L/2156ccL4 [F22A6]	Must use AEM Fuel Rail
25-300BK	Honda	1993	Accord SE	2.2L/2156ccL4 [F22A6]	Must use AEM Fuel Rail
25-300BK	Honda	1989	Accord SEi	2.0L/1955ccL4 [A20A3]
25-300BK	Honda	1992-1995	Civic CX	1.5L/1493ccL4 [D15B8]
25-300BK	Honda	1993-1995	Civic del Sol S	1.5L/1493ccL4 [D15B7]
25-300BK	Honda	1993-1995	Civic del Sol Si	1.6L/1590ccL4 [D16Z6]
25-300BK	Honda	1994-1995	Civic del Sol VTEC	1.6L/1590ccL4 [B16A3]
25-300BK	Honda	1996-1997	Civic del Sol VTEC	1.6L/1590ccL4 [B16A2]
25-300BK	Honda	1992-1995	Civic DX	1.5L/1493ccL4 [D15B7]
25-300BK	Honda	1992-1995	Civic EX	1.6L/1590ccL4 [D16Z6]
25-300BK	Honda	1992-1995	Civic LX	1.5L/1493ccL4 [D15B7]
25-300BK	Honda	1992-1995	Civic Si	1.6L/1590ccL4 [D16Z6]
25-300BK	Honda	1999-2000	Civic Si	1.6L/1595ccL4 [B16A2]
25-300BK	Honda	1992-1995	Civic VX	1.5L/1493ccL4 [D15Z1]
25-300BK	Honda	1988-1991	Prelude 2.0 Si	2.0L/1958ccL4 [B20A5]
25-300BK	Honda	1988-1989	Prelude 2.0 Si 4WS	2.0L/1958ccL4 [B20A5]
25-300BK	Honda	1992-1996	Prelude S	2.2L/2156ccL4 [F22A1]	Must use AEM Fuel Rail
25-300BK	Honda	1990	Prelude Si	2.1L/2056ccL4 [B21A1]
25-300BK	Honda	1991	Prelude Si	2.1L/2056ccL4 [B21A1]
25-300BK	Honda	1990	Prelude Si 4WS	2.1L/2056ccL4 [B21A1]
25-300BK	Honda	1991	Prelude Si 4WS	2.1L/2056ccL4 [B21A1]
25-300BK	Honda	1990	Prelude Si ALB	2.1L/2056ccL4 [B21A1]
25-300BK	Honda	1991	Prelude Si ALB	2.1L/2056ccL4 [B21A1]

Rebates

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CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

AEM Electronics 25-300BK Specifications

KEY SPECS
MFG. Part #	25-300BK
Brand	AEM Electronics
Regulator Style	Return

GENERAL
Fuel Pressure Rating (psi)	20-60
Inlet Quantity	1
Outlet Quantity	1
Regulator Material	Aluminum
Boost/Vacuum Reference Port	Yes
Gauge Port	No
Rebuildable	Yes
Fittings Included	No
Regulator Finish	Black anodized
Sold in Quantity	Each
Boost/Vacuum Rise Ratio	1:01
Regulator Location	Fuel rail mount
GTIN Code	840879019860

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