454/502 MPI MAG injector orings
 

I bought 2 GM oring seal kits today & where the kit used to have all orange orings now it has orange & blue orings. They appear to be slightly different size. Anyone know what color goes where on the injector?

the last ones i got from merc were all black???

That helps.....:lolhit:

there is nothing special about those o-rings... off the shelf generic black ones ( " regular rubber" ) work just fine. havng said that , the orange one sounds like " hi temp" type so maybe they are thinking that it needs that but if i were holding them in my hand, i would go with the one that is dimensionally identical to the one you took out.

Blue on top orange on bottom.