Guess the race part

Breath In AAAAAAAAAAAAAAAAAAA, hold it.................Exhale HHHHHHHHHHHHHHHHHHHHHHH........................There now don't you feel better.:D

My guess was that it wasn't a racing piece.
But after the clue, that it was in the pan, and that it was on the pressure side......... And, remembering a thread were you talked about a system were unfiltered oil feed the mains.......... i got it!!!!!!

But, you know that saying "HIND SIGHT IS 20/20":D

So were is the pictures of them PANS!!!!!!!:poke::poke::poke::lol: