Mercury Mariner 745-4973 745-6614A3 Piston Connecting Rod Assembly 65-70hp 3cyl steering wheel May Work On These Years:

May Work On These Years: 1978-1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998  (and possibly others)

MerCruiser 78403A2

The support bracket flange lines up with an empty threaded hole on the back of the block

The plastic part of this is generally found on Many V6 & V8 MerCruiser models utilizing the "New Design" Flame Arrestor Carburetor Cover 1981-1998 (4

56171 Starboard Rocker Cover

Mercury Mariner 745-4973 745-6614A3 Piston Connecting Rod Assembly 65-70hp 3cyl steering wheel May Work On These Years:Part Number(s) Included 745 6614A3 Piston & Pin Assembly (casting 745 4973) STANDARD SIZE PISTON Superseded Equivalent Related P N: 745 4891A2 > 745 5218A3 > 745 6614A3 > 745 7657A3 > 776 8869A3 > 774 9137A12 622 4850A3 Connecting Rod & Cap Assembly (casting 622 3665) Superseded Equivalent Related P N: 622 3666A4 > 622 3666A10 > 622 4850A4 > 622 4850A3 > 622 3666A10 > 622 4850A4 > 624 8101A3 31 62596A1 Crankpin Bearing Assembly General Application