Radium Top Feed Conversion Fuel Rail, Mazda 13B Primary

The Radium Engineering 20-1113 Top Feed Conversion Fuel Rail is designed for: Mazda 13B rotary — primary injectors.

The Radium Engineering high flow primary fuel rail is for the 13B-RE and 13B-REW rotary engine found in the 90-95 Mazda/Eunos Cosmo and 92-02 Mazda RX7 FD3S. The aluminum fuel rail is anodized black for compatibility with all popular fuel types including E85. Manufactured with a large internal bore, the fuel rail can support all necessary engine power requirements.

Ports And Fittings

The fuel rail has three ports that are tapped for 8AN ORB.

Appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. Dimensional drawings are available from Coore on request to verify clearance.

The extra center port allows additional fuel system accessories such as the OEM fuel temperature sensor (using 14-0421 ), a pressure transducer, Radium fuel pulse damper etc.

Vehicle Fitment

• Mazda 13B rotary — primary injectors

Available Part Numbers

• 20-1113 — Top Feed Conversion Fuel Rail, Mazda 13B Primary (this product)

Why Radium Engineering?

• ✔ Designed and manufactured in the USA
• ✔ CNC machined billet aluminium — precision fit, no compromise
• ✔ Trusted by professional motorsport teams and serious enthusiasts worldwide
• ✔ Exclusively distributed in Australia by Coore

Genuine Radium Engineering product, supplied by Coore Australia. Confirm fitment with Coore before ordering. Professional installation recommended.

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