Radium Engineering FHST - Nissan 370Z & Z (400Z) | Walbro F90000267/274/285 Compatible (No Pumps)

Radium Engineering FHST - Nissan 370Z & Z (400Z) | Walbro F90000267/274/285 Compatible (No Pumps)

Application: Nissan 370Z Z34 (2009-2020) and Nissan Z RZ34 (2023+) – RHD and LHD
Part Type: In-tank fuel hanger surge tank (FHST) with integrated regulator – pumps not included
Part Number: 20-1822

The Radium Fuel Hanger Surge Tank (FHST) solves fuel starvation in the saddle-bag style OEM tank of the Nissan Z34 370Z and RZ34 Z, a common problem under aggressive driving such as track use. An internal surge tank (collector box) is installed in the opposite side of the OEM tank and works with the OEM module and venturi jet pumps, avoiding the cabin intrusion of a stand-alone surge tank.

The FHST supports one or two aftermarket surge pumps and includes an integrated 1:1 adjustable fuel pressure regulator – connect the vacuum reference for boost-referenced pressure, or leave it plugged for constant pressure. No body modification, grinding or bending is required, and it is compatible with E85 and other alternative fuels.

Key Features

• Verified Pumps: Walbro F90000267 / F90000274 / F90000285
• In-Tank Surge Tank: Collector box in the opposite side of the saddle-bag tank
• One or Two Surge Pumps: Second pump wired with an additional wiring kit
• Integrated RA-series FPR: 1:1 adjustable with 360° swivel vacuum port and four 10-32 fittings
• Gauge Included: Fuel pressure gauge supplied
• Drop-in Installation: No body modification, grinding or bending
• High-Current Electrical: Stainless anti-rotation studs, non-conductive acorn nuts, ETFE-insulated wiring

What's Included

• FHST surge tank assembly with integrated regulator
• Pressure gauge
• External fuel hose and fittings
• Two 6AN fuel hoses to connect both sides of the tank
• Fittings to reconnect the OEM fuel feed line
• Electrical fuse, relay and wiring for one surge pump
• Electrical hardware for the fuel pump(s) and OEM level sender
• Four 10-32 vacuum fittings (barbed, 3AN male, push-to-connect, vacuum plug)

Optional Parts

• Radium DIY Fuel Pump Hard Wiring Kit (17-0031) – Required to wire a second surge pump
• Radium 20-1000-0808 Low Profile Swivel Banjo Fitting, 8AN ORB to 8AN Male – 8AN adapter for the FHST "OUT" port
• Radium Fuel Hanger FPR Block Off Plate - Ford Mustang S197/S550 11+ (20-0806) – Disables the integrated regulator and adds a return port – requires a downstream FPR (not covered in the instructions)
• Radium 20-1000-0606 Low Profile Swivel Banjo Fitting, 6AN ORB to 6AN Male – Recommended fitting for the 20-0806 return port

Important Notes

• Fuel pumps are not included
• The OEM module pump must be upgraded to at least 340 LPH at 40 psi
• The OEM venturi system must be used – do not modify the OEM FPR or OEM venturi jet pumps
• The Radium integrated regulator should be the only FPR in the system
• Fuel starvation will not occur prematurely, but the fuel level gauge will not read accurately
• The FHST "IN" fitting cannot be changed (it contains a venturi component); the "OUT" fitting can be changed
• The OEM low-micron post-pump filter is retained – a downstream aftermarket filter is recommended but not required
• Wiring for a second surge pump requires the 17-0031 wiring kit
• Use a medium-strength wicking threadlocker on the vacuum fitting
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Nissan 370Z Z34 (2009-2020) – RHD and LHD
• Nissan Z RZ34 (2023+) – RHD and LHD

Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.