Headgasket part number ?
#1
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Headgasket part number ?
Can I use GM part 12573949 (headgasket 2002 LS1) with a set of 99 heads? What is the difference between those and GM part 12558809/10?
I tried search but found no answer.
Thanks!
Terry
I tried search but found no answer.
Thanks!
Terry
#2
The 99 head has the little cast in slot on the edge of the mounting surface that limits head gasket type of what you can use. That number may be a supersed number for the previous gasket. The mid year 2000 and up does not have the slot.