i bought a set from napa containing 4 rubber rings. i know where 3 of go but there is the 4th one thats about an inch in diameter about the size of the biggest part of the injector that i have no idea where it belongs. anyone have any clues to where this belongs.
fuel injector o rings
- Thread starter gmann
- Start date
Some toyota vehicles have a larger sealing surface for the injector, which is what that other seal is for. NAPA doesn't make a 7MGTE kit, and a 4AFE kit, and a 3SGTE kit, etc. They make 1 kit that fits 90% of the vehicles. You need 1 o-ring, 1 spacer (touches rail), and 1 seat (touches head) for each injector. The spacer has the stepped-down notch and the seat is like a big square o-ring.