Pulley→3 Groove Pulley

Part # & Price	Description
MER19692A2 $249.95	Pulley Kit Circulating Water Pump Mercruiser Small Block GM V8 With Belts Circulating Pump Pulley Kit for V6 and V8 305 or 350 cid Mercruiser engines. Contains 7 in. (178 mm) diameter pulley, new V belts and instructions. Replaces MER15120T pulley. See Service Bulletin 97-4 497 (PDF) for details.
MER19692T01 $169.92	Pulley Circulating Water Pump 7 Inch 3 Groove for GM V6 V8 19692T01 Circulating Water Pump Pulley 7" diameter 3-Groove Pulley Fits GM V6, Small Block V8 and Big Block V8 Genuine Mercruiser Quicksilver # 19692T01
MER90081A1 $169.95	Pulley Assembly, Mercruiser Crankshaft 3 Cast Groove Crankshaft Pulley. It will fit Mercruiser Small Block V8 and 4.3L V6. This item will replace & Supersede Mercruiser # 90841A1. Diameter: 6-5/8" Height: 2-1/4"