


Radium Secondary Fuel Rail - Mazda Cosmo JC (20B-REW)
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Description
Radium Secondary Fuel Rail - Mazda Cosmo JC (20B-REW)
Application: Eunos/Mazda Cosmo JC 20B-REW (1990-1995) – secondary injectors
Part Type: Secondary fuel rail
Part Number: 20-0465
The Radium secondary fuel rail for the Mazda 20B-REW is a high-flow rail that mounts to the OEM lower intake manifold. Machined from aluminium and anodised black, it suits all popular fuel types including E85, has a large internal bore, and its ports are tapped 8AN ORB – including an extra centre port for accessories such as the OEM fuel temperature sensor, a pressure transducer or a Radium fuel pulse damper.
Injector seat adapters are included to allow aftermarket injectors to be used. The seats work with or without the OEM diffusers and use FKM O-rings suited to boosted applications.
Key Features
- 8AN ORB Ports: Includes an extra centre port for a temperature sensor, pressure transducer or pulse damper
- Large Internal Bore: High-flow secondary fuel delivery
- Aftermarket Injector Ready: Injector seat adapters included
- Diffuser Compatible: Seats work with or without OEM diffusers
- FKM O-Rings: Suited to boosted applications
- Black Anodised Aluminium: Suits all popular fuels including E85
What's Included
- Secondary fuel rail
- Injector seat adapters
- Spacers
Important Notes
- Fuel injectors are not included
- Without the included spacers, only OEM Mazda injectors will fit
- Aftermarket injectors require the included adapters and must be 60mm tall with an 11mm upper and 14mm lower O-ring, e.g. Injector Dynamics 1050-XDS (1050.60.11.14), 1300-XDS (1300.60.11.14), 1700-XDS (1700.60.11.14), 2000-XDS (2000.60.11.14) or 2600-XDS (2600.60.11.14)
- Choose fittings to suit your application and allow ample clearance around the rail ports for regulators, gauges and dampers
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Eunos/Mazda Cosmo JC (1990-1995) – 20B-REW, secondary injectors on the OEM lower intake manifold
Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.

