Head Bolt Set→Mercruiser 3.7L

Part # & Price	Description
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