: Oil pump seal/oring

08-27-11, 10:38 PM
I just finished with half case reseal and now ready to install oil pump. Was there an Oring or some kinda gasket that was to go on the backside of the oil pump. If so I have lost them. I even went to some auto part stores and we couldn't find any seals related to oil pump. There are two open areas on the pump. This pump is on a 2000 STS.



08-28-11, 02:56 PM
No seals on the oil pump, but there are o rings on the oil filter adapter. I think one of the gasket kits from felpro has some kind of oil filter adapter "gasket".

08-29-11, 05:46 PM
Nope, no O-ring.

Just remember to follow the GM harmonic balancer bolt torque sequence exactly.