Radium Fuel Pump Hanger

The Radium Engineering Fuel Pump Hanger (SKU: 20-01730) is a high quality, drop-in replacement for the factory fuel pump module in early Nissan performance models, including the 180SX, Silvia S13 and Skyline R32 GTS / GTS-T. Designed for serious power upgrades on petrol or E85, it allows you to run one, two or three in-tank pumps while retaining factory tank integrity and level sensing.

This hanger assembly locates the fuel pumps inside the OEM collector bowl to help maintain consistent fuel supply under hard cornering, acceleration and braking. Fuel is drawn through a mesh filter at the base of the unit into three separate filtration chambers. Each pump port has its own chamber, so fuel does not cross between A, B and C. If you choose to run fewer than three pumps, the unused port does not need to be blocked off, simplifying setup and future upgrades.

On the top plate, the pump outlets merge into a single 8AN ORB female outlet, making it easy to integrate with upgraded fuel systems. Integrated check valves allow pump staging, so you can run one pump for light load and bring in additional pumps only when required, helping to control fuel temperature and electrical load. The return line also uses an 8AN ORB female port, with adapter fittings supplied so you can connect either to the factory hard lines or to aftermarket AN hoses.

Radium’s attention to detail carries through to the electrical system. Instead of compact multi-pin bulkhead connectors, this hanger uses custom anti-rotation stainless steel electrical studs capable of handling the high current draw of multiple performance pumps. These studs are hermetically sealed and resistant to all common and exotic fuels. Non-conductive anodised aluminium acorn nuts are supplied to minimise the risk of accidental short circuiting during installation or servicing.

In-tank wiring uses high quality, chemically resistant ETFE insulation for long-term reliability with petrol, methanol blends and E85. An electrical hardware kit is included to help you wire the pumps and sensors at the top hat. For single Walbro GSS342 (255 lph) setups you can retain the OEM feed wiring, although upgrading the chassis wiring is recommended to ensure that higher capacity pumps receive full voltage and operate at their rated output.

The Radium Fuel Pump Hanger is machined from anodised aluminium with low profile ports to clear the Nissan unibody. It arrives partially assembled with all components required to install one, two or three compatible pumps. You supply the pumps best suited to your target power and fuel type, and configure the hanger accordingly. The design is compatible with a range of Walbro, AEM and DeatschWerks pumps, including some brushless options, giving you a flexible foundation for both current and future engine packages.

Suited to street, drift and circuit use, this hanger offers a clean, reversible solution for upgrading the fuel system in your S13 or R32 GTS / GTS-T without cutting the body or modifying the tank, while maintaining the function of the factory level float and low fuel warning.

• Direct drop-in for early Nissan tanks – Replaces the factory fuel pump module in S13 and R32 GTS / GTS-T models with no cutting or tank modification.
• Supports 1, 2 or 3 in-tank pumps – Configure for your current power level and easily expand later as your engine package evolves.
• Factory collector bowl utilisation – Pumps sit in the OEM surge bowl for improved fuel supply during cornering and hard acceleration.
• Triple independent filtration chambers – Separate A/B/C chambers with shared inlet mesh filter; unused ports do not require blanking.
• Integrated check valves for staging – Allows progressive pump activation to manage heat, noise and electrical load.
• High flow 8AN ORB ports – Single merged 8AN outlet and 8AN return provide straightforward connection to upgraded fuel systems.
• Includes OEM and AN line adapters – Supplied with barbs and 6AN/8AN fittings for either factory hard lines or aftermarket hoses.
• Retains factory fuel level and warning – Keeps OEM level float and low fuel switch functional for everyday usability.
• Robust electrical architecture – Anti-rotation stainless studs handle high current multi-pump setups, avoiding the limits of small bulkhead connectors.
• Chemically resistant wiring – ETFE-insulated in-tank wiring is compatible with petrol, methanol and E85 for long service life.
• Durable construction – Anodised aluminium top hat and stainless hardware resist corrosion in harsh fuel and motorsport environments.
• Brushless pump compatible – Designed to work with a wide variety of popular brushed and brushless in-tank pumps.

• Product: Radium Fuel Pump Hanger – Early Nissan
• SKU: 20-01730
• Vehicle fitment:
  • Nissan S13 Silvia (all models/trims, RHD/LHD)
  • Nissan S13 180SX (all models/trims, RHD/LHD)
  • Nissan S13 200SX (all models/trims, RHD/LHD)
  • Nissan S13 240SX (all models/trims, RHD/LHD)
  • Nissan R32 Skyline (all RHD/LHD, excludes GT-R)
• Construction: Anodised aluminium top hat, stainless steel hardware and clamps
• Pump capacity: Supports 1–3 in-tank pumps
• Outlet port: Merged 8AN ORB female
• Return port: 8AN ORB female
• Fuel compatibility: Petrol, methanol and E85 compatible
• Electrical:
  • Stainless steel anti-rotation electrical studs
  • Hermetically sealed bulkhead connections
  • Non-conductive anodised aluminium acorn nuts
  • ETFE-insulated in-tank wiring
• Installation notes:
  • Single Walbro GSS342 (255 lph) installs can re-use OEM pump wiring.
  • Upgraded wiring is recommended for higher flow or multi-pump setups.
• Compatible pumps for 20-01730:
  • Walbro GSS342 255 lph
  • AEM 50-1000
  • AEM 50-1200
  • DeatschWerks DW440

• Partially assembled Radium Engineering fuel pump hanger (SKU: 20-01730)
• Hardware to install 1, 2 or 3 compatible in-tank fuel pumps (pumps not included)
• Mesh inlet filter/strainer for collector bowl
• Integrated check valves (within hanger outlet system)
• Adapter fittings for connection to factory Nissan fuel lines
• 6AN and 8AN adapter fittings for aftermarket AN hose connections
• Stainless steel mounting hardware and clamps
• Electrical hardware kit for pump and sensor wiring at the top hat
• Non-conductive anodised aluminium acorn nuts for electrical studs