Fits (1939 And Later) Mercury/ Mariner/ (1974 To 1999) Sears And Chrysler/ Force 1 Cylinder 3.5 To 5 Horsepower/ 2 Cylinder 6 To 60 Horsepower/ 3 Cylinder 70 To 90 Horsepower/ 4 Cylinder 100 To 140 Horsepower/ 5 Cylinder 150 Horsepower Outboard Gearcases/ Drain Screws/ Jet Drive Housings/ Hydraulic Pump Assemblies And Other Applications/ (1962 To 2010) 4 Cylinder 80 To 140 Horsepower/ 6 Cylinder 160 To 165 Horsepower/ V8 228 To 900 Horsepower 1 Drive/ Easy Shift/ Mc-1/ Mc Ii/ Tr/ Trs/ R/ Mr/ Alpha One/ Alpha One-Ss/ Alpha Gen Ii/ Bravo/ Ssm/ Dry Six And Nxt Drive Gearcases; Single