Radium Engineering Fuel Hanger Plumbing Kit – 89–05 Mazda MX-5

This comprehensive fuel feed and return kit is designed to completely replace the factory fuel delivery system on the Mazda MX-5 NA and NB platforms. It includes high-flow PTFE fuel lines, a Radium RA-series regulator, and a high-performance fuel filter. The system is fully E85 compatible and engineered for use with aftermarket fuel rails such as the Radium 1.6L B6 or 1.8L BP fuel rail (sold separately).

This kit repurposes the factory feed line as a return, eliminating bottlenecks while maintaining factory routing where possible for a clean and simple installation. Ideal for high-performance or forced-induction builds requiring consistent fuel pressure and volume.

Key Features:

• Converts to a full -8AN feed and return setup

• Mounts fuel filter in the OEM location using billet bracket

• High-flow fuel filter with either 10 micron stainless (-03) or 6 micron microglass (-05) element

• RA-series FPR with gauge for easy pressure adjustment

• PTFE lines for maximum fuel compatibility including E85

• Designed to integrate with Radium aftermarket fuel rails