Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos

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Mercruiser Alpha 1 parts drawing *Lower unit 56-77

Lower unit outdrive parts numbers 56-77

lower gear case drawing

lower gear case drawing

87510 26-33144A2
87510

12120 Alpha 1 water pump

12120 Alpha 1 water pump

P/N 12120 Water pump kit (1984-1990) MR/Alpha One $35.95

23140 thrust ring
23140 thrust ring

56
P/N 23140 Thrust ring OEM 68100-1 $11.95

21620 carrier ball bearing
21620 carrier ball bearing

57
P/N 21620 Ball bearing / 30-88957T $37.95

83445 o ring
83445 o ring

58
P/N 83345
O rings (5) / 25-31534 $7.95

11410 drive shaft bearing
11410 drive shaft bearing

59
P/N 11410
Bearing / 31-30956 $10.00

11405 bearing carrier

11405 bearing carrier

60
P/N 11405
Bearing carrier / 818763A10 $157.95

85130 Oil seal
85130 Oil seal

61
P/N 85130
Oil seal (inside) / 26-14077 $7.95

85700 oil seal
85700 oil seal

62
P/N 85700
Oil seal (outside) / 26-12224 $12.95

32800 shim kit washer
32800 shim kit washer

63
P/N 32800
Washers / 12-92721 $4.95

11381 tab washer
11381 tab washer

64
P/N 11381 washer / 14-18323 $14.95

21120 prop cover nut
21120 prop cover nut

65
P/N 21120 Cover nut / 79448 $18.95

21301 thrust hub
21301 thrust hub

66
P/N 21301 Trust hub OEM part number 12-825467 $21.95

21760 lockwasher
21760 lockwasher

67
P/N 21760 Lock-washers / 13-42351-1 $4.95

21360 tab washer receiver
21360 tab washer receiver

68
P/N 21360
Tab washer receiver / 12-31211A3 $6.95

21210 tab washer
21210 tab washer

69
P/N 21210 Tab washer / 14-31210 $4.00

21230 lock nut
21230 lock nut

70
P/N 21230
Prop nut / 11-827614 $8.95

hardware
hardware

70B
P/N
Propeller hardware parts please click on picture

11120 drive shaft
11120 drive shaft

71
P/N 11120
Drive shaft (1970 - 1990) / 45-42634 $533.95

71B
P/N 11140
Drive shaft (1991 - up) /45-816919, 45-816472, 45-853647 $529.95

21330 slinger
21330 slinger

72
P/N 21330
Slinger / 25-30271 $4.95

21490 washers
21490 washers

73
P/N 21490
Washer (10 units) / 12-29245 $4.00

12702 anode
12702 anode

74
P/N 11012
Thrust spacer / 23-824108 $4.95

 

76
P/N 12702
Anode (for prop shaft carrier, 1991 and up) / 806105A1 $39.95

11080 bearing carrier key
11080 bearing carrier key

77
P/N 11080
Key / 28-30281 $4.00