› sierra-international-upper-unit-gear

Sierra International Upper Unit Gear Set 1.98-1 Ratio 18-2205. 98:1 ratio. Designed for use with Mercruiser 120/140 (s/n 2791957 & Up) and Alpha Gen II (s/n 0K999999 & Below) drive units. The set includes one drive gear and one driven gear per package....