Guides & News

Which Walbro Pump for Your Radium FCST-X? F90000267 vs F90000274 vs F90000285

A no-nonsense breakdown of Radium's surge tank range - MPFST, MPFST-R and FCST-X - covering pump fitment (Walbro GSS342, AEM 50-1200, DW440), swirl-pot flow and which tank suits a street-driven WRX, EVO or track build. Links straight to the surge tanks we stock in the UK.

Understand fuel pulse damping, compare Radium FPD-R and FPD-XR ranges, and check mounting, manifold reference and application restrictions.

Plan a Radium AOS-R installation for a Subaru WRX: confirm the exact engine, VTE configuration, oil return, coolant circuit and manufacturer instructions.

Compare original-tank hangers, external surge tanks and fuel-cell layouts before choosing compatible pump hardware.

Plan an E85 build by checking demand, component compatibility, filtration, plumbing, electrical supply and calibration.

Understand fuel pressure control, base pressure, reference operation and the checks needed before choosing a regulator.

Prepare a Radium FST installation plan covering pump configuration, fuel paths, ports, electrical supply and service access.

Choose a catch-can application by ventilation circuit, vehicle fitment, mounting access and maintenance requirements.

Understand how a lift pump, surge reservoir and engine-supply pump work together, and when surge protection may be useful.

Compare the MPFST, single-pump FSTR-RA and regulated MPFST-R, with manufacturer references and checks for exact pump configurations.

Check vehicle identity, supported pump models, tank transfer, kit contents and electrical requirements for a WRX, Evo or Supra hanger.

Understand when a surge tank, fuel cell or combined installation is relevant, and separate pickup starvation from pump-capacity problems.

Plan a 500hp fuel system around actual fuel demand, pump performance, regulation, filtration, plumbing and electrical requirements.

Compare catch cans and return-type AOS installations for a WRX, including VTE/VTA routing, fitment and inspection requirements.

Compare Fiesta ST PCV-side and dual catch-can kits, with product links, maintenance checks and manufacturer installation references.

Choose PTFE fuel hose and matching ends by fuel compatibility, working pressure, size, routing and the manufacturer's assembly instructions.

Check motorsport injector flow, physical fitment, fuel compatibility and ECU driver requirements before choosing a set for your build.

Compare surge-tank capacity, pump compatibility, mounting and plumbing, with links to Radium model comparisons and installation planning.

Plan a racing fuel cell around capacity, dimensions, pickup design, fuel compatibility and the requirements for the exact competition installation.

Choose an adjustable EFI regulator by system layout, injector pressure requirements, bypass capacity, reference operation and fuel compatibility.