Radium Fuel Hanger Surge Tank (FHST-RA) for BMW E90/E91/E92/E93 with N54 or N55 engines. Installs inside the fuel tank to eliminate fuel starvation during high-performance driving while supporting aftermarket fuel pump upgrades. No permanent modifications required.
The OEM lift pump feeds fuel into the surge tank; internal aftermarket pumps supply the engine. Accommodates one or two high-flow aftermarket fuel pumps (not included). Anodized aluminum construction, E85 compatible, tool-less pressure adjustment regulator, 360-degree swiveling vacuum reference port, and high-current stainless electrical connections.
