Cylinder Head Bolt Set

Part # & Price	Description
QSTHB350N $49.95	Bolt Set Cylinder Head for GM Chevy Small Block Engines For Both Heads Fits all GM small block marine engines 283 327 305 350 377. One kit has enough bolts for both cylinder heads. Thread sealant pre-installed on the threads because they go into the water jacket of the engine and must be sealed.
QSTHB370N $79.95	Head Bolt Set for Mercruiser 224 3.7L 4 Cyl 170 165 470 485 190 Engines Complete Head Bolt Set for Mercruiser 224 CID 3.7L Marine Engines. This engine had many model numbers like 170 165 470 485 190.... Basically if you have a 4 Cylinder Mercruiser Engine with more than 160 factory HP then you have a 3.7 Mercruiser. Includes 5 bolts 3/4" Head, 4-1/4" Shank with 1/2" Threads and 5 bolts 3/4" Head, 5" Shank with 1/2" Threads
QSTHB454N $69.95	Bolt Set Cylinder Head for GM 427 454 502 Big Block Marine Engine Fits GM 427, 454 and 502 Big Block V8. Includes 24 Long Bolts and 8 Short Bolts. One set needed per engine