The DeatschWerks DW400 (9‑403‑1047) is a high‑flow, vehicle‑specific in‑tank fuel pump kit designed specifically for the Ford Mustang S550 (FN/FM) & S660 (FO), including common superchargers (Whipple, Roush, ESS) conversion. With an impressive 415 LPH at 40 PSI, the DW400 provides the fuel volume required for high‑horsepower street cars, track builds, and E85 or boosted applications.

Designed as a true drop‑in upgrade, this kit includes the DW400 turbine fuel pump, an integrated 1/8” venturi, and the complete 9‑1047 installation hardware kit for a clean, factory‑style install with no cutting or fabrication required.

Key Features

• 415 LPH high‑flow in‑tank fuel pump at 40 PSI
• DW400 turbine impeller for quiet operation and consistent high‑pressure flow
• E85, pump fuel and race fuel compatible
• Integrated 1/8” venturi helps prevent fuel starvation under hard cornering
• PWM (pulse‑width modulation) compatible with factory fuel pump controllers
• Vehicle‑specific kit for straightforward, OE‑style fitment
• Designed to support high‑power NA, turbo and supercharged combinations

Technical Specifications

• Manufacturer Part Number: 9‑403‑1047
• Pump Series: DeatschWerks DW400
• Pump Type: Electric, in‑tank
• Flow Rate: 415 LPH @ 40 PSI
• Open Flow: Up to 500 LPH
• Operating Voltage: 12V
• Pump Diameter: 46 mm
• Fuel Compatibility: Petrol, E85, race fuel
• Control Type: PWM compatible
• Install Kit Included: Yes (9‑1047)
• Warranty: 3‑year DeatschWerks manufacturer warranty

Vehicle Applications

• Ford Mustang V6 & GT – 2015–2025
• Ford F‑150 – 2015–2024

Note: Fitment should always be confirmed before purchase.

Performance Notes

For high‑boost, track use or ethanol‑based setups common in the Australian market, a 10‑gauge hard‑wire kit is strongly recommended to ensure maximum voltage at the pump and consistent fuel delivery under load.

The DW400 is an excellent choice for enthusiasts chasing reliable fuel supply without compromising drivability or factory‑level fitment.

Package Contents:

• 1 × DeatschWerks DW400 In-Tank Fuel Pump (w/ 1/8" Venturi)
• 1 × DeatschWerks DW400 Fuel Pump Fitting Kit