Timing Set for GM Generation 6 Roller Cam Big Block V8 engines.
This kit contains a Single Roller Chain, Crankshaft Gear, and a Camshaft Gear. Replaces Mercruiser Numbers 811580, 850452, 811579.
If you don't know if your big block is a Generation 5 or 6, look at the timing cover. Gen 5 has a 10 bolt timing cover, a gen 6 has a 6 bolt timing cover.
- Fits Gen 6 Big Block Engines (1996 and newer) 454 and 502