Radium Injector Seats for Subaru Fuel Rails (20-0171 / 20-0305 / 20-0816)

The seat is what lets one rail accept several injector styles. Get it wrong and the injector will not seal.

These Radium Engineering injector seats for Subaru fuel rails press into a Radium rail's injector bore and set which injector body the rail will accept. Choosing the right seat is what makes a rail work with your chosen injectors rather than only the factory ones.

Choose Your Seat

• 22mm injector seat (20-0171)
• 27mm injector seat (20-0305)
• Air assist injector seat (20-0816): for Subaru's air-assist injection system

Features

• Press-in injector seats for Radium Subaru fuel rails
• Sized to the injector body, not the rail
• Fuel and ethanol compatible

The Details

Injector seats are sold individually, so order the quantity your engine requires. The air assist seat is the distinct one: Subaru's air-assist injection uses a different injector arrangement, and the Phase-I EZ30 in particular ships from Radium with air-assist seats because the factory injectors on that engine are air-assist units. Going to conventional aftermarket injectors on that engine means changing seats.

Confirm your injector's seat dimension against the manufacturer's drawing before ordering, since 22mm and 27mm are not interchangeable.

Applications

• Radium fuel rails for Subaru engines

Important Notes

• Sold individually; order one per injector
• Confirm the seat size against your injector's specification before ordering