Radium Mazda Injector Seat, 1 Piece

These are the same machined aluminum injector seats used in Radium fuel rails for Mazda/Eunos Cosmo and RX-7 rotary engines. They are required when converting the OEM 16mm injector seat's counterbore to 14mm which is more common with popular injector lower O-rings. They simply "pop" into the OEM injectors bore. They were designed specifically to be compatible with or without the OEM fuel injector diffusers installed. They seal to the machined injector counterbore using the included Viton O-ring.
They can be used for the primary fuel injector iron ports.
They can also be used for OEM intake manifold secondary injector ports.

Compatible with or without OEM diffusers
CNC Machined Billet 6061 Aluminum
Type-II Black Anodizing
Laser Etched Logo
Boost and fuel compatible Viton O-ring

NOTE: most aftermarket lower intake manifolds are already machined with 14mm lower injector O-ring ports.

If you have a deadline to meet, please confirm that we have stock ready for dispatch to avoid disappointment!


Product Info

13B-RE requires 4 total (2 primary+2 secondary)
13B-REW requires 4 total (2 primary+2 secondary)
20B-REW requires 6 total (3 primary+3 secondary)

Shipping & Returns

Free Shipping does not apply to some heavy items, for example: Wisefab & BC Racing are included for free shipping, NPC and some PWR are not included.

Shipping times may vary depending on your location, however the majority of packages are received within 3-5 business days of dispatch!

We dispatch 5 days a week, and aim to process all orders within 24hrs*

On weekends and public holidays, orders will be processed next business day.

*order processing may be delayed during sale events or holiday periods.

Payment Methods

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