OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives
- Mercruiser lower unit parts diagram
Alpha One and Mercruiser outdrive components #26-50 with exploded view drawing
Last updated on 3/27/2020, 4:37:27 AM
- Alpha One (up to 1990) and Mercruiser lower unit GLM aftermarket parts
- Gears, gear sets, shifting components
- Roller and tapered bearings
- OEM Mercury cross reference numbers
Mercruiser outdrive components #26-50
Photo
Description / OEM #
Price
(USD)
Price (Canadian)
87510 seal kit
26-33144A2
$38.95
$50.95
12120
Item B
P/N 12120 Water pump impeller kit with housing (1984 – 1990, MR and Alpha One, serial numbers 6854393-OD469858). Click on picture for older MC-1, R and 1991 and up Gen 2 kits.
$35.95
$46.95
Lower Unit 1623-8951A43
SE106 SEI Mercruiser sterndrive
Item C
SEI SE106 Aftermarket outdrive Mercruiser,
MR / Alpha One Gen 1 complete lower unit. For 1970 to 1990 models, serial numbers 2791957-OD469858, 4 cylinder, V6 and V8 models for up to 300 horsepower.
OEM 1623-8951A43
$1125.96
$1499.96
51230
Item D
P/N 51230 GM 5.0L, 5.7L 305 – 350 V8 exhaust manifold, center rise for 1983 – 2001 models. Click on photo for all other engine / model manifolds.
860246Q11
$190.95
$251.95
81180
P/N 81180 O-rings (5)
25-25439
$4.95
$5.95
32790
P/N 32790 Washer
12-27880
$4.00
$4.00
21132 Clip
Item 29
P/N 21132 Clip
18-20233
$4.00
$4.00
21030 lower shift shaft
Item 30
P/N 21030 Shift shaft
77481-1
$37.95
$49.95
85140 Oil passage seal
Item 31
P/N 85140 Oil passage seal (5 units)
26-45577-1
$8.95
$10.95
21731 Drain plug
Item 32
P/N 21731 Drain screw (includes gasket)
22-8M0058389
$6.95
$7.95
31170
Item 33
P/N 31170 Gaskets for drain plugs (5)
12-19183-2
$10.95
$12.95
21870 Insert
Item 34
P/N 21870 Insert screen (starboard)
93423-1
$5.95
$7.95
21880
Item 35
P/N 21880 Insert screen (port)
93424-1
$5.95
$7.95
Item 36
P/N 12822 Screw
10-76156
$7.95
$9.95
21161
Item 37
P/N 21161 Nut
11-45812
$4.00
$4.00
21170
Item 38
P/N 21170 Lock nuts (5)
11-859116
$9.95
$11.95
21740
Item 39
P/N 21740 Screw
10-32470
$5.95
$6.95
22430
Item 40
P/N 22430 Screw
10-30206
$4.00
$4.00
12670 Trim tab
Item 41
P/N 12670 Aluminum trim tab
31640Q4
$9.95
$12.95
21610
Item 42
P/N 21610 Roller bearing
31-42647A1
$43.95
$53.95
11100
Item 43
P/N 11100 Gear set, forward/pinion (1972 – 1983, serial numbers 3469428-6225576)
43-96084A7
$623.95
$823.95
11190 Pinion nut
Item 44
P/N 11190 Pinion nut
11-35921
$4.95
$5.95
11030 Spool
Item 45
P/N 11030 Shift spool
818349T1
$86.95
$114.95
11040 Shift crank
Item 46
P/N 11040 Shift crank
76865
$67.95
$89.95
23220 Shims
Item 47
P/N 23220 Shims
15-47397A1
$11.95
$15.95
21590
Item 48
P/N 21590 Roller bearing
31-35928T1
$59.95
$78.95
11420
Item 49
P/N 11420 Roller bearing
26-816464-1
$14.95
$19.95
11050 Spring
Item 50
P/N 11050 Spring for clutch dog
24-30893
$5.95
$6.95