Front crankshaft seal diameter

[TAF2003]

I have a 1996 5.7L Yukon. It is leaking oil in the front. Without taking the pulley wheels off, it seems to be coming from behind the harmonic balancer.

I was looking to start ordering parts from Rockauto, but noticed two different diameters for the crankshaft seal.

https://www.rockauto.com/en/catalog/gmc,1996,yukon,5.7l+v8,1166431,engine,crankshaft+seal,5604

Short of removing it and matching the size at the parts store, any way to know the seal diameter ahead of time?

Thx
Andy



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[TAF2003]

I am planning on also getting the crankshaft repair sleeve based on recommendations in another thread.


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