Mercruiser parts 25 thru 57 lower gearcase drawing

GLM aftermarket Mercruiser parts layout with illustrated lower unit photo drawing

GLM products are completely compatible and interchangeable with Mercruiser parts. GLM has committed to producing high quality and cost effective aftermarket Mercruiser parts for the past two decades
New to our lower unit product line are Mercruiser propellers and hub kits

Lower gearcase outdrive 1972 thru 1982

MWM-Mercruiser-parts-25-thru-57-lower-gearcase-drawing.jpg

Mercruiser parts lower gearcase 1972 thru 1982 part numbers 1 thru 57

Mercruiser parts Click here:
drawing 1 thru 24

drawing 58 thru 73

Picture

Description

30010 gasket

25

# 30010 Shift shaft gasket washer
(5 units)
OEM # 12-31266

$4.29

26

# 85581 Oil Seal

( Included in # 87510 seal kit parts )

21010 bushing assembly

21010 bushing assembly

27

# 21010 Bushing assembly
( Included in # 87510 seal kit parts )

81180 o-ring shifter

81180 o-ring shifter

28

# 81180 O-Ring

( Included in # 87510 seal kit parts )

32790 washers

32790 washers

29

# 32790 Washer (10 units)

OEM# 12-27880

$4.09

21132 clip

30

# 21132 Clip
OEM # 18-20233

N/A

21030 lower shift shaft

31

# 21030 Shift shaft
OEM # 77481-1

$25.09

85140 Oil passage seal

85140 Oil passage seal

32

# 85140 Seal OEM# 26-45577-1

( Included in # 87510 seal kit parts )

Lower unit oil pump

33

401-11245-1 Mercruiser lower unit oil pump Oil pump

$9.09

21731 Draining screw set

33

# 21731 Oil plug magnetic drain screw OEM # 22-67892A1

$5.09

31170 gasket for housing drain screw

31170 Gasket for housing drain screw

34

# 31170 Washer

( Included in # 87510 seal kit parts )

Insert screen starboard

35

# 21870 Insert screen (stbd)

OEM # 93423-1

$4.09

21880 insert screen

Insert screen port

36

# 21880 Insert screen port side
OEM # 93424-1

$4.09

12822 screw

37

# 12822 Screw (5 units)

OEM # 10-76156

$5.09

21161 stainless steel lock nut

21161 stainless steel lock nut

38

# 21161 Stainless steel lock nut

OEM # 11-45812

$4.09

21170 lock nuts 5 units

21170 Lock nuts 5 units

39

# 21170 Lock nuts (5 units)

OEM# 11-13439-1

$9.09

21740 screws

40

# 21740 trim tab screw (2 units)
OEM # 10-32470

$4.09

22430 Allen bolt

41

# 22430 Bolt
OEM# 10-30206

$4.09

12670 Anode

42

# 12670 Trim tab anode

OEM# 31640A1

$9.09

21600 bearing

43A

# 18-1150 Drive shaft OEM #31-92366A1
MC-1 / R (serial #4893835 - 62255757)
Mercruiser outdrive bearing
Note see propper install warning

$75.29

43B

# 21610 Drive shaft pinion bearing OEM #31-42647A1
MR / Alpha 1 (serial #6225577 and up)

$33.29

11300 Mercruiser 1 gear set

11300 Mercruiser 1 gear set

44A

# 11300 Forward-reverse-pinion gear set 17-28 ratio

OEM# 43-96084A4

$350.09

11100 Merc 1 pinion forward gear

11100 Merc. 1 pinion / forward gears 17-28 ratio

44B

# 11100 Pinion & forward gear 17-28 ratio

OEM# 43-96084A7

$283.09

11190 Alpha pinion nut OEM 314730

45

# 11190 Pinion nut
OEM # 11-35921

$4.09

11030 shift spool

46

# 11030 Shift spool
OEM # 818349T1

$62.89

11040 Shift crank

47

# 11040 Shift crank
OEM # 76865

$53.89

23220 Alpha one shims

48

# 23220 Shims (5 units) for bore size 3.500

For bore size 3.265 use # 23211 OEM # 15-47397A1

$7.09

21590 Bearing 1.875" ID

49

# 21590 lower unit forward timken bearing (I.D. 1.875)
OEM # 31-35928T1

$47.89

11420 roller bearing

50

# 11420 Needle roller bearing

OEM # 31-30895

$9.09

11050 cluch dog spring

51

# 11050 Spring Clutch dog spring

OEM # 24-30893

$4.09

21131 Cross pin

52

# 21131 Cross pin (3 units)
OEM # 17-30632

$4.09

11060 clutch dog

53

# 11060 Mercruiser clutch dog
OEM # 52-853594T

$160.89

11150 Alpha & Mercruiser propeller shaft

54

# 11155 Propeller shaft

OEM #44-850308

Replaces #11150 (OEM # 44-824110)

$401.89

23290 outdrive shim

55

# 23290 Shim

$4.89

23141 thrust ring

56

# 23141 Thrust ring
OEM # 35915

$14.89

Alpha carrier ball bearing

57

# 21620 Reverse gear ball bearing
OEM # 30-88957T

$30.89