MerCruiser R/MR/Alpha One Driveshaft Housing Diagram
Applicable for serial numbers 6225577 thru 0D469858
Ref
Part #
Note
Qty
Description
1
1547-9412A18
1
Driveshaft housing assembly
2
16-56295
2
Stud
3
22-42861 1
1
Pipe plug
4
19-32652
1
Welch plug (7/8 inch OD)
19-42682
1
Welch plug (1-1/4 inch OD)
5
23-32632
1
Bushing
6
11-859116
3
Nut
7
19-47579
1
Plug
8
10-79953Q2
1
Screw
9
12-19183 3
1
1
Washer
10
814819A2
1
Universal joint assembly
11
46020002
1
Yoke - gear end
12
39383 1
1
Center socket
13
75832T
2
Cross & bearing (0B418818-below)
75832T1
2
Cross & bearing (0B418819-up)
14
59830A7
1
Yoke - coupler end
15
25-25439
1
2
O-ring
16
816811 2
1
Retainer
17
35983
1
Ring
18
25-70937
1
1
O-ring
19
66081A2
1
Carrier assembly
20
26-823894
1
Oil seal
21
31-35988A12
1
Bearing kit (1.98, 1.84, 1.65 & 1.50)
31-35988A3
1
Bearing kit (1.32)
31-35988A9
1
Bearing kit (1.50 heavy duty)
(Order if drive gear has stepped bearing shoulder)
(Order if drive gear has stepped bearing shoulder)
22
23-35985
1
Spacer (1.98, 1.84, 1.65 & 1.50)
23-66824
1
Spacer (1.32 & 1.50 heavy duty)
23
15-35980A1
AR
Shim kit
24
15-71013
1
Shim
25
43-80310T1
2
1
Rebuild kit (1.98) (20-24 teeth)
43-55778A3
1
Gear kit (1.98) (20-24 teeth)
43-803114T1
2
1
Rebuild kit (1.84) (17-19 teeth)
43-75325A3
1
Gear kit (1.84) (17-19 teeth)
43-803112T1
2
1
Rebuild kit (1.65) (24-24 teeth)
43-45814A5
1
Gear kit (1.65) (24-24 teeth)
43-803116T1
2
1
Rebuild kit (1.50) (20-22 teeth)
43-18411A2
1
Gear kit (1.50) (20-22 teeth)
43-803115T1
2
1
Rebuild kit (1.32) (16-20 teeth)
43-66773A3
1
Gear kit (1.32) (16-20 teeth)
43-18411A4
1
Gear update kit (1.50 heavy duty)
(Order if drive gear has stepped bearing shoulder)
(Order if drive gear has stepped bearing shoulder)
26
31-35990A1
1
Bearing (Timken Cone #89449 / Cup #89410) (1.98, 1.84, 1.165, early style 1.50)
31-32573A1
1
Bearing (Timken Cone #24780 / Cup #24740) (1.50, 1.50 heavy duty)
31-66818A1
1
Bearing (Timken Cone #43131 / Cup #43300) (1.32)
27
12-45810
1
Washer
28
11-22339
1
Nut
29
26-96503 1
1
1
Oil seal
30
26-32511
1
1
Oil seal
31
15-36178A1
AR
Shim kit
32
45-55796
1
Upper driveshaft
33
25-55801
1
1
O-ring
34
94998A4
1
Cover assembly - top
35
31-61100A1
1
Driveshaft bearing
36
15-45691A1
AR
Shim kit
37
25-32546
1
1
O-ring
38
10-98794
4
Screw
39
42724A3
1
Cover assembly - water pocket
40
26-36557
1
1
Seal
41
27-55810 1
1
1
Gasket
42
10-28668
4
Screw
43
32-54236
1
Tube
-
26-32511A1
-
Seal kit
Note 1: Contents of seal kit QS-26-32511A1
Note 2: Rebuild kit includes all gears, shims, bearings, seals & gaskets to rebuild upper driveshaft housing
AR: As required