AEM 50-1235 – 400LPH High Flow In-Tank Fuel Pump (Smooth Barb for 5/16″ Hose)

DescriptionThe 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:FeatureSpecificationFlow Rate400 LPH @ 40 PSI; 330 LPH @ 70 PSI (13.5V)Fuel TypeGasoline, Ethanol up to E100, Methanol up to M100MountingIn-TankDiameter39mmInlet11mmOutlet9mm Smooth Barb (5/16″ ID Hose)Current Draw12A @ 40 PSI; 15A @ 70 PSI (13.5V)Part Number50-1235Max HP Support1,000 HP @ 40 PSI; 870 HP @ 70 PSICompatibility 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.