DW400 In-Tank Fuel Pump

The DeatschWerks DW400 Universal In-Tank Fuel Pump (9-401-1001) is engineered for demanding performance needs, offering a robust solution for fuel delivery. It boasts a high flow rate of 415 LPH at 40 PSI, capable of supporting significant horsepower gains. The pump is constructed with a reliable turbine impeller that is compatible with pulse width modulated (PWM) pump drivers, ensuring smooth and efficient operation. Ethanol compatibility is a key feature, achieved through the use of carbon commutators and fully encapsulated armatures, making it suitable for E85 and other alcohol-based fuels. The DW400's high-torque motor is designed to maintain consistent flow even at higher fuel pressures, outperforming many competitors. Its low amperage draw not only minimizes internal pump temperatures and maximizes lifespan but also reduces the electrical load on your vehicle's wiring system. Installation is facilitated by a universal fitment kit, which typically includes a filter, electrical connector, and other essential accessories. However, some installation considerations should be noted. The pump's substantial current draw (16-20 amps) may require upgraded chassis wiring; a DeatschWerks hardwire kit (FPHWK) is recommended. The DW400 has a 46mm diameter, which is larger than standard 39mm pumps, potentially requiring modifications to the fuel pump module. Additionally, the DW400 does not feature an internal check valve, so an in-line check valve may be necessary for optimal engine starting in certain applications.