AEM's 400LPH high-flow fuel pumps are built for high-performance naturally aspirated and forced induction EFI vehicles. Each pump is individually flow tested and guaranteed to deliver 400+ LPH (106 GPH) at 40 PSI (13.5V) - enough to support 1000+ horsepower on gasoline - and maintains 330+ LPH at 70 PSI (13.5V), good for roughly 870 HP on gasoline. With a compact 39mm body (the same size as a Walbro 255), low amperage draw, an 11mm inlet, and a 9mm barbed outlet, this pump is designed to replace the OEM fuel pump in many applications. The 50-1230 uses a double-barbed outlet ideal for 3/8-inch ID hose. The kit includes a wiring harness, pre-filter, end cap, and rubber buffer sleeve.
Specifications:
- Flow Rate: 400+ LPH (106 GPH) at 40 PSI, 13.5V
- High-Pressure Flow: 330+ LPH at 70 PSI, 13.5V
- Body Diameter: 39mm (same size as Walbro 255)
- Inlet: 11mm
- Outlet: 9mm double barb, sized for 3/8 inch ID hose
- Current Draw: 12A at 40 PSI / 15A at 70 PSI
- Fuel Compatibility: Pump/race gasoline, ethanol up to E100, methanol up to M100
- Includes: Wiring harness, pre-filter, end cap, rubber buffer sleeve
- Part Number: 50-1230
FAQ
How much horsepower can the AEM 50-1230 fuel pump support?
On gasoline it is rated to support 1000+ horsepower at 40 PSI and approximately 870 horsepower at 70 PSI (30 psi of boost).
What is the difference between the AEM 50-1230 and 50-1235 fuel pumps?
The 50-1230 has a double-barbed outlet sized for 3/8-inch ID hose, while the 50-1235 has a smooth barb outlet compatible with 5/16-inch ID hose.
What fuels is the AEM 400 LPH fuel pump compatible with?
It is compatible with pump or race gasoline, ethanol up to E100, and methanol up to M100.

