Mercruiser 120hp 140hp 165hp 3.0L 2.5L 4.1 Front Engine Mount 32778 Stud Bracket Flywheel Housing Heat exchanger tube 910161 /

Heat exchanger tube 910161 / 0910161 (FYI the part number of the piece bolted into the intake manifold is GM 6269950)

but it might be

KF3 (and possibly others)

170hp 200hp 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 175hp 200hp 270hp 260hp 170hp 230hp 185hp 175 200 270 260 170 230 185 hp

This type of trim arm would have been found in late 1960's/70's/80's right up until 82'ish MerCruiser power systems

Mercruiser 120hp 140hp 165hp 3.0L 2.5L 4.1 Front Engine Mount 32778 Stud Bracket Flywheel Housing Heat exchanger tube 910161 /Item Details Front Engine Support Motor Mount Found on MerCruiser Sterndrive Alpha One Models Generally Found on most models 1960's 1990's: GM 2. 5L 120hp 4cyl 153 CID GM 3. 0L 140hp 4cyl 181 CID GM 4. 1L 165hp 6cyl 250 CID Great Condition Freshwater Used Part Front engine adjustment stud 16 30100T in great condition Part numbers: 32778 (Same as 32778T used 1963 1998) 73571C 73571A2 36099A2 (Same as 73571A2 used 1963 1998) 55862 WILL ARRIVE