Radium Engineering Fuel Hanger – 89–05 Mazda MX-5 (Pumps Not Included)

This Radium Engineering fuel pump hanger is a drop-in replacement for all 1989–2005 Mazda MX-5 models. It supports one or two high-performance fuel pumps with integrated surge protection and provisions for factory fuel level sensors. No grinding or modification of the tank is required.

Vehicle Compatibility:

• 1989–1997 Mazda MX-5
• 1999–2005 Mazda MX-5

Fuel Pump Compatibility:

• AEM 50-1200
• Walbro GSS342
• Walbro F90000267 / F90000274 / F90000285
• *Ti Automotive E5LM (*No check valve, staging use with 20-0798 recommended)

Note: The hanger supports any fuel pump with a 39mm outer diameter. Includes components to support 1 or 2 pumps.

Overview:
Designed to eliminate fuel starvation during spirited driving, this system includes a machined collector box with integrated 1-way fill valves that trap fuel around the pump inlets. The collector box ensures consistent fuel delivery during high G-force conditions and is constantly replenished via the regulator return and two high-flow 1-way valves.

Key Features:

• Compatible with all common performance pumps
• Supports one or two pumps (components included for both)
• Integrated 1.85L collector box with dual 355 LPH 1-way fill valves
• Pre-pump filters included for all pumps
• Fuel return constantly replenishes the surge tank
• Retains OEM internal fuel tank baffle
• No modifications required to install
• Compatible with ethanol fuels (E85)

Fuel Ports:

• Pump Out: 10AN ORB (7/8"-14)
  • Includes quick connect fittings for 89–97 and 99–05 MX-5
• Fuel Return: 8AN ORB (3/4"-16)
  • Includes quick connect fittings for 89–97 and 99–05 MX-5

Fuel Tank Fitment:

• Includes billet mounting extension brackets to suit all fuel tank configurations across 1989–2005
• Extended sensor bracket included for deeper tanks (late model fitment)

Fuel Pressure Regulator Notes:

• 1989–1997 MX-5 retains OEM FPR (mounted on fuel rail)
• 1999–2005 MX-5 requires aftermarket FPR
  • Compatible plug-and-play options:
    • 20-1022 FPR Kit for 99–05 MX-5
    • Coming Soon: Fuel Hanger Plumbing Kit for 89–05 MX-5

Filtration:

• Pre-pump filtration included for all pump ports
• Post-pump OEM filter is retained

Wiring and Electrical:

• OEM wiring can be reused for low-power single pump setups
• For optimal pump performance, upgraded wiring is strongly recommended
• Compatible wiring kits available for each aftermarket pump
• In-tank ETFE wiring included (chemically resistant)
• Stainless steel bulkhead terminals are serviceable and sealed
• Anodized acorn nuts prevent accidental short circuiting