Radium Fuel Hanger Surge Tank - Ti Automotive E5LM| 1992-1995 Mazda RX-7 (20-0951)

Three pumps in the FD's tank: one filling, two feeding, zero starvation.

The Radium Fuel Hanger Surge Tank for the 1992-1995 Mazda RX-7, 2 Surge Pumps + 1 Lift Pump, Walbro GSS342 is the FD's in-tank answer: a complete FHST replacing the factory hanger, with the lift pump filling the integrated surge canister and dual GSS342-class surge pumps feeding the rotary from a reservoir that never runs dry, all inside the stock tank with no trunk hardware. This -02 variant configures for the Walbro GSS342 pump class.

What You'll Feel

• Fuel starvation ended through every corner, the canister staying full regardless of tank level
• Dual-pump delivery capacity for big single turbo and E85 rotary builds
• A factory-location install, the FD keeping its trunk and its silhouette
• Staged pump control available, the second surge pump switching in when demand calls
• E85 readiness from the compliant materials throughout

Features

• Fuel hanger surge tank for the 1992-1995 Mazda RX-7 (FD3S)
• Architecture: 1 lift pump fills the canister, 2 surge pumps feed the engine
• -02 variant for the Walbro GSS342 (255lph) pump class
• Anodized aluminum, high current electrical hardware, fuel-compliant materials
• Gasoline and E85 compatible; verify pump inclusion per the store listing

The Details

The FHST collapses the external surge tank into the hanger, with the lift pump transferring fuel into the canister continuously and the surge pumps drinking from that always-full column, which suits the FD perfectly: the rotary's intolerance for lean events makes surge protection life insurance rather than luxury, and the in-tank format preserves the car people buy FDs for. The honest FHST note applies, with the lift pump refilling at its own rate, so sustained max demand from both surge pumps eventually outruns the transfer; the GSS342 class matches street-and-track power targets, with the 450-class variants serving bigger builds. Wiring pairs a Radium DIY kit per pump circuit, and the 20-0736 access cover makes future service a lid-lift.

Kit Includes

• 1x FD RX-7 fuel hanger surge tank, GSS342 configuration (20-0450-02)
• Verify pump inclusion and wiring contents per the store listing

Applications

• 1992-1995 Mazda RX-7 (FD3S)
• Companions: 20-0736 access cover, 20-0448 filter mount, 13B rails