AEM High Capacity Adjustable Fuel Pressure Regulator
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AEM High Capacity Adjustable Fuel Pressure Regulator - Universal - Black
AEM builds its fuel system components for racers who can't afford pressure drop under boost, and this regulator is no exception. The High Capacity Adjustable Fuel Pressure Regulator (SKU 25-305BK) is engineered for high output engines and racecars that need a large volume of fuel delivered reliably, with a wide adjustment range and a return orifice sized for high flow pumps.
This listing covers the universal fitment black anodised version of the regulator, suited to any engine bay running an aftermarket -6 AN fuel system. It's a common choice for turbocharged and supercharged builds where stock or lower capacity regulators can't keep up with demand.
Note: the barb fitting for the outlet port is not included and is sold separately under PN 25-390.
Specifications
- Finish: black anodised aluminium
- Inlet: 2 x -6 AN (9/16-18)
- Outlet: -6 AN (9/16-18)
- Gauge port: 1/8 NPT for fuel pressure gauge or sensor
- Vacuum hose fitting: 5mm (3/16 in)
- Adjustable pressure range: approximately 276-896 kPa (40-130 PSI)
- 1:1 rising rate for boosted applications
- Alcohol and race fuel compatible
- Includes universal mounting bracket and four 10-32 x 1/2 in screws
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. As a universal fitting component, please confirm your fuel line sizing and gauge/sensor requirements before ordering.
Not sure if this regulator suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
Universal fitment — verify dimensions before ordering.
Technical Specifications
| Spec | Value |
|---|---|
| Part Number | 25-305BK |
| Finish | Black anodised |
| Construction Material | Aluminium (anodised) |
| Inlet Port | 2 x -6 AN, 9/16-18 thread (O-ring sealed) |
| Outlet Port | -6 AN, 9/16-18 thread (O-ring sealed) |
| Outlet Barb Fitting | Sold separately, PN 25-390 |
| Gauge Port | 1/8 NPT |
| Vacuum Hose Barb | 5 mm (3/16 in) |
| Adjustable Pressure Range | 276 - 896 kPa (40 - 130 PSI) |
| Pressure Rate (Boost Reference) | 1:1 rising rate |
| Return Orifice | Single large orifice, high flow rate design |
| Fuel Compatibility | Alcohol fuel and race fuel compatible |
| Mounting Bracket | Universal mounting bracket included |
| Mounting Screws | 4 x 10-32 x 12.7 mm (1/2 in) |
No instructions available for this product.

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