Radium Engineering Fuel Hanger Surge Tank BMW E90/E91/E92/E93 3-Series N54/N55 (Walbro F90000267/274/285) - 20-1972

Radium Engineering 20-1972 regulated fuel hanger surge tank (FHST-RA) for the BMW E90/E91/E92/E93 3-Series with the N54 or N55 engine, sized for Walbro F90000267, F90000274 and F90000285 pumps. Pumps are not included.

• Drop-in OEM replacement mounted inside the fuel tank on the side opposite the factory pump, with no permanent modifications required
• Prevents fuel starvation during high lateral G-force driving and allows high-flow aftermarket pumps for high-horsepower builds
• Holds one or two surge pumps. The OEM pump fills the surge tank and the surge pump(s) supply the engine
• Integrated one-way fill valve and 1:1 fuel pressure adjustment
• Tool-less regulator adjustment by knob, with detents of about 1 psi (+/-0.5 psi) each
• 360-degree swiveling vacuum reference port with four interchangeable 10-32 vacuum fittings, including a plug for constant pressure on returnless systems
• 8AN ORB feed port with a low-profile 8AN male fitting that clears the OEM pump cover plate
• Anodized aluminum canister and outlet fitting, stainless steel hardware, ETFE-insulated in-tank wiring
• E85 and ethanol compatible
• Arrives partially assembled with components to install one or two pumps

Included

• Fuel hanger surge tank
• Pump installation hardware and filter socks
• DIY fuel pump wiring kit (for one pump) with 1 relay and 1 fuse
• Electrical parts kit for external wiring

Fitment

The E90/91/92/93 M3 uses a brushless fuel pump, so the installer must devise a way to trigger the new surge pump(s). BMW 1-Series (E81/E82/E86/E87) is not compatible. (Source: Radium Engineering)

Resources

• Radium Engineering product page
• Radium installation instructions (PDF)

Contact us if you are unsure of fitment or Size HERE