OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives
- Mercruiser outdrive parts drawing 51-77
Lower unit outdrive with exploded view breakdown drawing
Last updated on 3/27/2020, 4:37:27 AM
- Alpha One (Generation 1 up to 1990) and Mercruiser outdrive lower unit components
- Drive shaft, propeller shaft
- Water pump kits, oil seals
- GLM aftermarket numbers with OEM Mercury cross reference
Mercruiser outdrive parts drawing 51-77
Photo
Description / OEM #
Price
(USD)
Price (Canadian)
Lower Unit 1623-8951A43
Item A
SEI SE106 Aftermarket
aftermarket Alpha 1 lower gear case Alpha One Gen 1 / Mercruiser complete lower unit replacement. For 1970 – 1990 models, serial numbers 2791957-OD469858 with 13 spline vertical driveshaft, for 4 cylinder, 6 cylinder and V8 models.
OEM 1623-8951A43
$1125.96
$1499.96
21131 Cross pin
P/N 21131 Cross pin
17-8M0020941
$4.95
$5.95
11060 Clutch dog
P/N 11060 Clutch dog
52-853594T
$225.95
$297.95
Propeller Shafts
P/N 11155 Propeller shaft
44-850308
$660.95
$871.95
23290 Shims
Item 54
P/N 23290 Shim
15-97166
$4.95
$5.95
23141 thrust ring
Item 55A
P/N 23141 Thrust ring (1970 – 1982)
35915
$26.95
$35.95
23140
P/N 23140 Thrust ring (1983 and up)
26-816575A2
$11.95
$15.95
21620
Item 56
P/N 21620 Bearing
30-88957T
$37.95
$49.95
83445 O ring
Item 57
P/N 83445 O-rings (5 units)
25-896524
$10.95
$12.95
11410
Item 58
P/N 11410 Prop shaft bearing
31-30956
$10.95
$12.95
11405 Bearing carrier
Item 59
P/N 11405 Bearing carrier
818763A10
$157.95
$207.95
85130 Oil seal
Item 60
P/N 85130 Oil seal (inside)
26-14077
$7.95
$9.95
85700 Oil seal
Item 61
P/N 85700 Oil seal (outside)
26-12224
$12.95
$16.95
11080 Key
Item 62
P/N 11080 Key
28-30281
$4.95
$5.95
11380
Item 63
P/N 11380 Keyed washer
*For gears, see part number 43
14-79447
$6.95
$8.95
21120
Item 64
P/N 21120 Cover nut
8M2011027
$18.95
$24.95
21301 Thrust hub
Item 65
P/N 21301 Thrust hub
12-835467Q01
$22.95
$28.95
21760
Item 66
P/N 21760 Lockwasher
13-42351-1
$5.95
$6.95
21360 Receiver
Item 67
P/N 21360 Washer
12-31211Q03
$6.95
$8.95
21200
Item 68
P/N 21200 Tab washer
14-816629Q
$4.95
$5.95
21230 Propeller nut
Item 69
P/N 21230 Lock nut
11-52707Q1
$8.95
$11.95
Drive Shafts
Item 70
P/N 11110 Drive shaft with pre-load pin at top (1967 – 1983 only, serial numbers 2791957-6225576)
45-41939F1
$432.95
$570.95
11120 Drive shaft
Item 70B
P/N 11120 Drive shaft (19984 – 1990, serial numbers 6225577 – 0D469858)
45-42634
$533.95
$704.95
21330 Lower unit slinger
Item 71
P/N 21330 Slinger
25-30271
$4.95
$5.95
Item 72
P/N 11020 Reverse gear (1972 – 1982, serial numbers 3469428-6225576)
43-92320T
$389.95
$514.95
21413 Dowel pin
Item 73
P/N 21413 Dowel pin
17-35973
12110 Water pump kit
$44.95
$54.95
12120 Alpha 1 pump
$37.95
$47.95
Item 76
P/N 12754 Aluminum anode kit
888756Q04
$25.95
$33.95
87510 seal kit
26-33144A2
$38.95
$50.95