This part was removed from an antique Chris Craft 34' Boat.  These parts are in good/used condition unless otherwise stated.  This was used in a freshwater environment.

The starboard side engine is a 300 HP 427 A Ford.  The number on the tag says 427 68 10 8D 366 J. 6090A C7JE is on the heads between the spark plugs. Crank has a 3U stamped on one of the weights.      

The starboard side transmission is a Paragon V Drive Model PV4325-R, SN 3295.

The port side transmission is a Paragon V Drive PV4325-L, SN 5P-5644.978.

This is a: Crankshaft Pulley  

Inventory Location No:  R16J-00 & R16J-0C011