MERCURY : 40 Carb (3 CYL.)(4-STROKE) Model Serial Ranges 0T409000 THRU 1B226999 1B227000 THRU 1B344306 1C000001 THRU 1C018825 1C018826 & Up 0P153500 THRU 0P400999 0P401000 & Up
