Description
The AEM 50-1235 is one of the highest-flow 39mm in-tank fuel pumps available, delivering 400+ LPH @ 40 PSI (13.5V) to support 1,000+ HP on gasoline. Designed for high-performance naturally aspirated and forced induction EFI vehicles, it maintains exceptional flow even at elevated pressures, flowing 330+ LPH @ 70 PSI (13.5V)—enough to support approximately 870 HP on gasoline.
Compact in size with a 39mm diameter (same as a Walbro 255), the 50-1235 is a direct upgrade for many OEM applications. It features an 11mm inlet and a smooth 9mm barbed outlet designed for 5/16-inch ID hose. Each pump is individually flow-tested to guarantee performance and efficiency, drawing only 12A @ 40 PSI and 15A @ 70 PSI.
The AEM 50-1235 is compatible with a wide range of fuels, including pump/race gasoline, ethanol (up to E100), and methanol (up to M100). The kit includes a wiring harness, pre-filter, end cap, and rubber buffer sleeve for installation.
Specifications:
| Feature | Specification |
|---|---|
| Flow Rate | 400+ LPH @ 40 PSI; 330+ LPH @ 70 PSI (13.5V) |
| Fuel Type | Gasoline, Ethanol up to E100, Methanol up to M100 |
| Mounting | In-Tank |
| Diameter | 39mm |
| Inlet | 11mm |
| Outlet | 9mm Smooth Barb (5/16″ ID Hose) |
| Current Draw | 12A @ 40 PSI; 15A @ 70 PSI (13.5V) |
| Part Number | 50-1235 |
| Max HP Support | 1,000+ HP @ 40 PSI; 870 HP @ 70 PSI |
Compatibility Notes:
Ideal for high-output naturally aspirated and forced induction EFI applications. Direct fit upgrade in many factory fuel pump hangers using 5/16-inch ID hose.
