AEM's 400LPH high-flow fuel pump is 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. Flow remains strong even as system pressure increases, delivering 330+ LPH at 70 PSI (13.5V) for roughly 870 HP support. The compact 39mm body (same size as a Walbro 255), low amperage draw, 11mm inlet and 9mm barbed outlet make it a straightforward replacement for many OEM in-tank pumps. The 50-1235 uses a smooth barbed outlet compatible with 5/16-inch ID hose. Each pump includes a wiring harness, pre-filter, end cap and rubber buffer sleeve.
Note: factory fuel pump wiring may not handle the current draw of this pump — follow the Electrical Requirements section of the instructions for proper wiring. This pump does not include an integrated check valve.
This product carries a California Proposition 65 warning per the manufacturer's data.
Specifications:
- Free Flow: 400 LPH (106 GPH)
- Flow @ 40 PSI (13.5V): 400 LPH (105 GPH)
- Flow @ 70 PSI (13.5V): 330+ LPH
- Fuel Compatibility: Gasoline, Ethanol up to E100, Methanol up to M100
- Body Diameter: 39mm
- Inlet: 11mm, inline
- Outlet: 9mm smooth barb (5/16" ID hose)
- Current Draw: 12A @ 40 PSI, 15A @ 70 PSI (13.5V)
- Material: Black-plated steel
- Includes: Wiring harness, pre-filter, end cap, rubber buffer sleeve
- Warranty: Manufacturer's 1-Year Warranty
- Part Number: 50-1235
FAQ
How much horsepower can the AEM 50-1235 fuel pump support?
Flow tested at 400+ LPH (106 GPH) at 40 PSI, the pump can support 1000+ horsepower on gasoline, and roughly 870 HP at 70 PSI boosted pressure.
What hose size does the 50-1235 outlet use?
The 50-1235 has a smooth 9mm barbed outlet compatible with 5/16-inch ID fuel hose.
Is the AEM 50-1235 compatible with E85?
Yes. It is tested and compatible with gasoline, ethanol up to E100, and methanol up to M100.
