AEM Adjustable Fuel Pressure Regulator
Part # 25-303BK
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Fits Acura/Honda - B17A1/B18A1 - C30A1/C32 B1/A6 - D15B6/D16A 1/6 - G25A 1/4 - H22A1/H23A1 (must use AEM Fuel Rail)
Read MoreAEM Adjustable Fuel Pressure Regulator
Free Shipping - Lower 48 US States
Est. Ship Date: 10/16/2026
MSRP $259.95
$206.95
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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.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
About AEM
AEM Performance Electronics makes advanced technologies accessible to the racing masses. Check out our innovative automotive aftermarket products today!
| Brand | AEM |
|---|---|
| Category | Air and Fuel Delivery |
| Color | Black |
| Emission Code | 5 |
| part type | Fuel Pressure Regulator |
| Product Type | Fuel Pressure Regulator |
| Sub Category | Carburetion |
| Warranty | Manufacturer's 1 Year Warranty |
| UPC | 840879020040 |
| Part Number | 25-303BK |
5
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Manufacturer's 1 Year Warranty: See Details
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Some parts are not legal for use in California or other states with similar regulations.