MERCRUISER
Drive System
18-2452
18-2451
COMPLETE UPPER UNIT
COMPLETE UPPER UNIT
Replaces: 1547-9412A22
Replaces: 1547-9412A21
1.84:1/1.81:1
1.65:1/1.62:1
18-2443
18-2453
LOWER UNIT ASSEMBLY
COMPLETE UPPER UNIT
Replaces: 1623-8951A43
Replaces: 1547-9412A23
For: R/MR/ALPHA
1.98:1/1.94:1
18-2402
18-2401
LOWER GEAR HOUSING
LOWER GEAR HOUSING
Replaces: 1623-5356A4
Replaces: 1623-8951A27
For: R Style
For: MR/ALPHA Style
18-2358
18-2363
UPPER UNIT
UPPER UNIT
GEAR REPAIR KIT
GEAR REPAIR KIT
Replaces: 43-803102T1
Replaces: 43-803118T1
For: 20-22 Teeth: 1.50:1 (1.47:1)
For:20-24Teeth: 1.98:1(1.94/2.40:1)
Gen II applications serial number range up to OK999999 only
Gen II applications serial number range up to OK999999 only
18-2365
18-2364
UPPER UNIT
UPPER UNIT
GEAR REPAIR KIT
GEAR REPAIR KIT
Replaces: 43-803120T1
Replaces: 43-803119T1
For: 17-19 Teeth: 1.84:1 (1.81:1)
For: 24-24 Teeth: 1.65:1 (1.62:1)
Gen II applications serial number range up to OK999999 only
Gen II applications serial number range up to OK999999 only
686