Overview
The Radium Engineering Fuel Hanger Surge Tank (FHST) drops directly into the factory fuel tank of the 1993-1995 Mazda RX-7 FD3S to provide an integrated in-tank fuel surge tank. By combining fuel surge tank technology inside the fuel tank, it eliminates starvation on road courses and supports high-horsepower rotary fueling without trunk clutter.
Features
- Integrated in-tank fuel surge tank eliminates starvation on long sweeps and low fuel levels
- Drops directly into the factory RX-7 FD fuel tank opening utilizing the OEM lock ring
- Supports up to two submersible high-flow fuel pumps (Walbro, AEM, or DeatschWerks)
- Precision CNC machined 6061-T6 aluminum top hat with high-current electrical bulkhead terminals
- Configured with 8AN ORB feed and 6AN ORB return ports for high fuel volume capability
Vehicle Fitment
- 1993-1995 Mazda RX-7 (FD3S Twin Turbo 13B-REW US-Spec)
Radium Engineering Fuel Hanger Surge Tank - 1993-1995 Mazda RX-7 (FD3S) (20-0950)
Radium Engineering Fuel Hanger Surge Tank - 1993-1995 Mazda RX-7 (FD3S) (20-0950)
SKU:RAD 20-0950
In stock
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Shipping & Returns
Shipping charges are non-refundable.
30-day return window from delivery. Items must be unused, uninstalled, and in original packaging with tags/seals intact. Installed, modified, or used parts (including wheels and tires) can't be returned. Open-box, clearance, and overstock items are final sale.
A restocking fee may apply.
Please contact us for return authorization before shipping anything back.
Vehicle Fitment
- Mazda RX-7 FD (1993-1995)






