Radium Engineering Fuel Cell Subharness Kit | Universal (20-0774)

In-tank pumps live or die on their wiring, and this harness was built for exactly two Walbros.

The Radium Engineering Fuel Surge Tank Wiring Harness, Dual Walbro Internal Pump wires the surge tank's internals correctly: fuel-submersible harness construction connecting dual Walbro GSS-family internal pumps inside a Radium surge tank, carrying full current through connections built to live in fuel. The dual-pump FST configuration, wiring both pumps through the tanks bulkhead.

What You'll Feel

• Full rated flow from pumps receiving their full rated current
• Fuel-submersible insulation that survives years inside the tank
• Connections matched to the pump's terminals, no improvised splices in fuel

Features

• Internal surge tank wiring harness for dual Walbro GSS-family internal pumps
• Fuel-submersible construction, gasoline and E85 compatible
• Service replacement and configuration part for Radium surge tanks

The Details

Ordinary wire insulation degrades submerged in fuel, wicking along strands and hardening until it cracks, which is why in-tank harnesses are their own discipline: fuel-rated insulation, sealed terminations, and connectors matched to the pump family they serve. This harness pairs the surge tank's bulkhead electrical connections with the pump terminals, keeping the current path honest from stud to pump. Match the harness to the exact pump model, since terminal styles differ across families, and pair each pump's external circuit with a Radium DIY wiring kit so the supply side matches. Sold as the internal harness only.

Kit Includes

• 1x Internal wiring harness (17-0002)
• Pumps and external wiring sold separately

Applications

• Radium fuel surge tanks running dual Walbro GSS-family internal pumps
• Gasoline and E85 service