I got an oil leak at the front of my engine, I got it narrowed down to either the opti drive seal or the front crank seal. I am just going to replace both of them but wanted to make sure I had all of the parts before I get started. This is what I am gonna get.

Opti seal
Crankshaft seal
Water pump drive shaft o-ring
Water pump gaskets

Does the opti drive seal have a o-ring?

 

Both the opti drive and water pump drive shaft have a special GM seal in the timing chain cover, not just an O-ring. The 96-97s covers and opti drive seal are different from the 93-95s.

WD

http://www.cardomain.com/ride/2189634