> Mercury Marine [Updated: Nov. 2, 2026] > Outboard > Mark & K Series (pre 1960) > MARK 55 > ARCHIVE CAT 46124

MARK 55 Thunderbolt 40 hp
MARK 55, 55E . . . . . . . ALL SERIAL NUMBERS (Mark 55 1956-58: 906752 thru 1152195)

TOP COWL AND STARTER ASSEMBLY
p2
101-1266A2 TOP COWL ASSEMBLY
37-25615A1 DECAL SET

1266A2, 25615A1
1266A2 25615A1

COWLING AND FRONT COVER
p4
155-1028A2 COWL FRONT COVER ASSEMBLY
155-1028A3 COWL FRONT COVER ASSEMBLY

1028A2, 1028A3
1028A2 1028A3

BOTTOM COWL ASSEMBLY
p38
103-1140A1 BOTTOM COWL ASSEMBLY
103-942A2 BOTTOM COWL ASSEMBLY
37-23076 DECAL, MERCELECTRIC (2, 55E)

1140A1, 942A2, 23076
1140A1 942A2 23076

MERCURY MARK DECALS

37-25615A1 DECAL SET (-1), (-2), (-3) AND (-4)
37-23076 DECAL, MERCELECTRIC (2, Mark 55E)