Radium Engineering FHST Fuel Hanger Surge Tank for Nissan 350Z / Infiniti G35

Radium FHST Fuel Hanger Surge Tank, 350Z/G35

Application: Nissan 350Z / Fairlady Z (Z33), Nissan Skyline V35/V36, Infiniti G35, G37, Q50 and Q60 – some models need a fuel level adapter
Part Type: In-tank fuel hanger surge tank (FHST) – fuel pumps not included
Part Number: 20-1830, 20-1832

The Radium Fuel Hanger Surge Tank (FHST) tackles fuel starvation in the Nissan Z33/V35 chassis, caused by the saddle-bag-style OEM tank and its weak baffling during aggressive driving such as track use. Because the surge tank is built inside the OEM tank, there's no cutting of sheet metal and no separate surge tank mounted in the cabin.

The FHST runs one or two aftermarket fuel pumps, supplies 1:1 regulated fuel and is E85 compatible. Two versions are available to suit different pump families, and later Skyline/G37/Q50/Q60 and early Z33/V35 models use a Radium fuel level adapter.

Key Features

• Drop-In Installation: Built inside the OEM tank – no sheet-metal cutting or cabin-mounted surge tank
• 1 or 2 Surge Pumps: Runs one or two aftermarket pumps
• Brushless Compatible: 20-1832 suits the DeatschWerks DW440 brushless pump
• Integrated Regulator: Adjustable 1:1 fuel pressure regulator
• Pressure Gauge: 0-100 psi fuel pressure gauge included
• Starvation Protection: Surge tank inside the OEM tank keeps the pumps supplied
• High-Current Electrical: Stainless electrical studs with non-conductive acorn nuts, ETFE-insulated in-tank wiring
• Construction: Anodised aluminium with stainless hardware
• Fuel Compatibility: Petrol, methanol and ethanol (E85) compatible

Available Configurations

• 20-1830: Suits Walbro GSS342 or AEM 50-1200 (E85) pumps
• 20-1832: Suits Walbro F90000267, F90000274, F90000285 or DeatschWerks DW440 (brushless) pumps

What's Included

• Fuel hanger surge tank with integrated 1:1 regulator
• Hardware for pump installation
• DIY wiring for one pump, including one relay and one fuse
• 0-100 psi fuel pressure gauge
• EFI hose
• Fittings
• Vacuum plug for constant-pressure setups

Optional Parts

• Radium Fuel Level Sender Adaptor - Nissan 350Z Z33/Nissan Skyline V35 (20-0596) – required for early 350Z/Fairlady Z (Jan 02 to Jan 04) and early Skyline/G35 Coupe (Jan 01 to Mar 03)
• Radium Fuel Level Adapter, Nissan Skyline V36 / Infiniti G37 / Q50 / Q60 (20-0896) – required for late Skyline, G37, Q50 and Q60 models
• Radium Fuel Hanger FPR Block Off Plate - Ford Mustang S197/S550 11+ (20-0806) – converts the built-in regulator to a return-style system for an external regulator
• Radium 20-1000-0606 Low Profile Swivel Banjo Fitting, 6AN ORB to 6AN Male (20-1000-0606) – low-profile 6AN ORB return port fitting recommended with the 20-0806 block-off
• Radium 20-1000-0808 Low Profile Swivel Banjo Fitting, 8AN ORB to 8AN Male (20-1000-0808) – 8AN low-profile adapter for the FHST OUT port, recommended for high flow

Important Notes

• Fuel pumps are not included
• The OEM venturi system must be used with the FHST, and the OEM module pump must be upgraded to at least 340 LPH at 40 psi
• Do not modify the OEM fuel pressure regulator or the OEM venturi jet pump
• The FHST IN fitting cannot be changed because it contains a component the venturi system needs
• The Radium integrated regulator must be the only fuel pressure regulator in the system
• The OEM post-pump filter stays in place; a downstream aftermarket filter is recommended but not required
• Radium notes the fuel level gauge will read inaccurately, although starvation will not occur prematurely
• Vacuum reference is optional – open to atmosphere gives constant pressure, connected to intake vacuum gives 1:1 rising rate
• Not compatible with Q50/Q60 2.0 Turbo models
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Nissan 350Z / Fairlady Z (Jan 2004 on)
• Nissan 350Z / Fairlady Z (Jan 2002 to Jan 2004) – requires 20-0596
• Nissan Skyline Sedan (Jan 2001 to Dec 2008) – requires 20-0896
• Infiniti G35 Sedan (2001 on)
• Infiniti G37 Sedan (Dec 2008 on) – requires 20-0896
• Infiniti Q50 (Nov 2013 on) – requires 20-0896; not 2.0 Turbo
• Nissan Skyline Coupe (Mar 2003 to Dec 2008)
• Nissan Skyline Coupe (Jan 2001 to Mar 2003) – requires 20-0596
• Nissan Skyline Coupe (Dec 2008 on) – requires 20-0896
• Infiniti G35 Coupe (Mar 2003 on)
• Infiniti G35 Coupe (Jan 2001 to Mar 2003) – requires 20-0596
• Infiniti G37 Coupe (Dec 2008 on) – requires 20-0896
• Infiniti Q60 (Nov 2013 on) – requires 20-0896; not 2.0 Turbo

If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.

Installation

We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.

Note

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.