Radium Multi-Pump Fuel Surge Tank (Regulated) Fits Walbro F90000267/274/285

A fuel surge tank (FST) prevents fuel starvation in vehicles with inadequate fuel tank baffling, especially with high-power upgrades like forced induction. This MPFST-R (Multi-Pump Fuel Surge Tank - Regulated) acts as a buffer to ensure a continuous fuel supply to the pumps. It features a built-in regulator that returns low-pressure fuel directly into the surge tank, eliminating the need for an external FPR return line. The regulator offers tool-less pressure adjustment with incremental detents (approximately 1psi per detent) and a 360-degree swiveling vacuum reference port. It has an 1/8" NPT fuel pressure port for a gauge or sensor and is 1:1 vacuum reference capable. This specific model (20-1447) is compatible with Walbro F90000267, F90000274, F90000285, and Walbro F90000295 fuel pumps (pumps not included). It can accept 1, 2, or 3 compatible fuel pumps. All pumps feed through a single 10AN ORB female outlet port (comes with an 8AN male adapter). "OVERFLOW" and "SUPPLY" ports are 8AN ORB female threaded (come with 6AN male adapter fittings). It is designed for dead-end fuel systems, requiring a return port to be created on the fuel tank if not already present. Fuel pump power connections use anti-rotation high-current electrical studs, and all internal wires are gasoline, ethanol, and methanol compliant. It has integrated mounting feet for M6 (or 1/4") fasteners. Optional accessories include a 0-100psi fuel pressure gauge and a fuel level switch.