Mercruiser Thunderbolt Ign Module Assy
 

Brand new in box with harness, never used but was recently tested. Quicksilver part #17316A-1. Application for 500HP. On the module reads 5J22A V8-HP. Had this laying around as a spare and no longer have the boat. Mercruiser has stopped the production on thunderbolt ignition products and are deemed obsolete. New from Larrys lighthouse the list for over $350 and needs to be shipped from the west coast. $300 including shipping

http://www.mercruiserparts.com/partsByNumber.asp