- Works on 1993–newer Cadillac 4.6L V8 Northstar engine and 1995–1999 Oldsmobile Aurora 4.0L V8
- 1/2" square drive for use with 1/2" drive breaker bar or ratchet
- Designed to self-center in the water pump housing, allowing the tangs to fully engage the water pump for removal or installation
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