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...