603.961 Injector Heat Shield ?
 

Stopped into the dealer yesterday to order six or so injector heat shields to have ready for some injector pop testing this weekend.

Turns out there are three heat shields available of varying thicknesses.

Anybody have an idea as to which one to order?

In hind sight we probably should of searched using the VIN#

Thought I'd ask.

I can only imagine three hole opening sizes, not thicknesses. If you're sure you were looking at the heat shield, you can get rid of my feeling that maybe you were looking at the prechamber seals instead.