OMC Cobra 0983902 0986338 2.5L 120hp 3.0L 140hp Engine Coupler 3853962 Transom Plate This type of switch was

This type of switch was mounted directly to the transom plate and the ends "plugged" into  a terminal

Alpha ONE Gen II (1990 & Up)

Fuel Pump base 24757

You just need to inspect the casting number to see if the one you are replacing is the right one

OMC Cobra 0983902 0986338 2.5L 120hp 3.0L 140hp Engine Coupler 3853962 Transom Plate This type of switch wasItem Details OMC 983902 0983902 Fits 2. 5L 120hp GM 4cyl & 3. 0L 140hp 4cyl GM OMC Cobra Applications 1986 1989 (2 Piece rear main oil seal) Also can fit a handful of 1986 V Models using 2 piece rear main oil seal from that time period. (This measures 3. 5" across to the studs on the crankshaft) The newer 1 piece oil seal crankshaft are 3" across. Yours should look just like this. Compatible Equivalent Part Numbers: 983902 0983902 986338 0986338