anyone have the part numbers for BOTH rubber gaskets used on the endplate?



need both of the gaskets shown any info would help.

 

I need to order them myself hopefully someone knows the part numbers and post them in here

 

Ok I just called the dealership myelf

The one that looks like the race track is part number
12584355 Chevy computer system calls out for qty 2 of them
The one thats just a round O ring is part number
12584333 Chevy computer system calls out for qty 1 of them

 

hmmm. there should only be 1 of the 'racetrack' looking gasket, maybe part numbers are wrong?

 

looks like those are the correct part numbers but u only need 1 of each.

 

I know I asked the dude on the phone if it calls out for two,Wheres the second one go and he couldnt tell me.All he could say is it tells me it takes two of them