1993 4.0 ohv fuel injector rubber cups or seats?

[carbine4570]

I am replacing the fuel injectors on my 93 4.0 ohv and the old ones have rubber cups or seats that go around the bottom and I've misplaced them. I cannot find them anywhere. Are those necessary?

 

[Shran]

Not necessary. Most of the trucks I've worked on don't even have them

 

[gaz]

@carbine4570 ,
This listing is for a 1987 Ford BroncoII 2.9l fuel injector kit. I have used them on OHV 4.0l injectors, they are a perfect fit.