Mercruiser Sterndrive I/I-R/MR/Alpha One Drive Shaft Housing Components Exploded View

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Mercruiser Sterndrive I/I-R/MR/Alpha One Drive Shaft Housing Components Exploded View
Mercruiser Sterndrive Typical Drive Shaft Housing Components Exploded View Diagram and Parts
Fits I / I-R / MR / Alpha One (Typical)
Figure #DescriptionO.E.M. #Sierra #
1Upper Gear Housing N/A
2Screw, Top Cover10-98794 18-3231
3Top Cover94998A2 18-2381
4O-Ring, Top Cover25-32546* 18-7161
5Shim, Bearing Cup to Top Cover15-45691A1 18-2283
6Tapered Roller Bearing31-61100A1 18-1165
7Upper Drive Shaft45-55796 18-2179
8O-Ring, Upper Drive Shaft25-55801* 18-7445
9 & 10Upper Unit Gear Set
1.5:143-18410A2, 46-18411A2 18-2201
Rebuild Kit 18-2256
1.65:143-45814A5 18-2203
Rebuild Kit 18-2257
1.84:143-75325A3 18-2204
Rebuild Kit 18-2258
1.98:143-55778A3 18-2205
Rebuild Kit 18-2259
11Tapered Roller Bearing31-35990A1 18-1161
12Shim Kit, Bearing Cup to Drive Shaft Housing15-36178A1 18-2293
13Oil Seal, Upper Drive Shaft Housing26-32511* 18-2049
14Oil Seal, Lower Drive Shaft Housing26-96503* 18-2056
15Vent Screw10-79953A2 18-2244
16Gasket, Gear Housing Drain Screw12-19183, 12-20260* 18-2945
17Plug, Trim Tab Hole19-47579 18-3232
18Stud, Drive Shaft Housing (4) N/A
19Bushing, Drive Shaft Housing23-32632 18-3236
20Nut, Gear Housing Stud (3)11-13439-1 18-2362
21Welch Plug, Drive Shaft Housing
(7/8" OD)19-32652 18-4272
(1 1/4" OD)19-42682 18-4273
22Pipe Plug, Water Pocket N/A
23Nut, Drive Gear to U-Joint11-22339 18-3713
24Washer, Drive Gear to U-Joint Nut12-45810 18-3712
25Shim Kit, Drive Gear15-35980A1 18-2292
26Bearing Kit31-35988A2, A12 18-1160
27Spacer (comes with kit)31-35988A2, A12 18-1160
28Roller Bearing (comes with kit)31-35988A2, A12 18-1160
29Oil Seal26-64893* 18-2003
30Carrier Assembly Oil Seal66081A2 18-0577
31O-Ring25-70937* 18-7169
32Ring, Roller Bearing Retainer35983 18-4296
33Retaining Nut Drive Shaft Housing816811-1 18-3752
34Yoke Assembly46020T 18-2125
35Heavy Duty U-Joint75832A2 18-2104
36Center Socket39383T 18-2128
37U-Joint Shaft Coupler59830A1 18-2146
38Drive Shaft59830A5 18-9218
39O-Ring25-25439* 18-7153
40Screw, Water Pocket Cover to Drive Shaft Housing10-28668 18-3229
41**Gasket, Water Pocket Cover27-55810* 18-0894
42**Water Pocket Cover NSS
43**Bushing, Water Pump Housing26-38970* 18-3110
44**Water Tube32-54236 18-3220
**Items 41, 42, 43 and 44 makeup 18-3219 Water Housing Kit
*Included in Seal Kit 18-2648 (Not Pictured)
N/ANot Available
Average Customer Review for Upper Unit Seal Kit - Sierra
Based On 4 Reviews
upper seal kit by William - East new Market, MarylandAugust 10, 2010
fast shipping.got on the day i was told it would arrive.will use iboats for all my boating accesories.great dealing with them.look forward to dealing with in near future.thanks iboats.
(2 of 2 people found this review helpful)
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Upper drive seal by Jim - Mooresville, IndianaNovember 20, 2012
This kit has all of the seals needed, even the ones I didn't think I needed. Worked out very well.
(1 of 1 people found this review helpful)
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Review for Sierra 18-2648 Upper Unit Seal Kit by a CustomerMarch 20, 2009

(1 of 1 people found this review helpful)
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Works great! by Adam - Bowling Green, KentuckyMarch 03, 2014
This seal kit isn't as hard to put in as you think, buy the spanner wrench, read a manual, and it's going to be just fine. I did the upper in 1.5 hours and it pressure tested perfect.
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Based On 1 Review
parts by Keith - Ozark, AlabamaAugust 01, 2011
Very good quality parts and a very smooth transaction .
(1 of 1 people found this review helpful)
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Average Customer Review for Upper Drive Washer - Sierra
Based On 1 Review
pinion washer by a Customer - Mobile, AlabamaMay 08, 2013
as advertised
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Average Customer Review for Welch Plug - Sierra
Based On 1 Review
Correct Plug by Eric - Niagara Falls, New YorkAugust 03, 2013
Used to replace the 7/8 frost plug on a mercruiser pre-alpha. Item fit perfectly. Same or better than OEM.
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Average Customer Review for Drain Screw Gasket - Sierra
Based On 2 Reviews
Good product. by Dean - Honolulu, HawaiiOctober 21, 2011
Satisfied with quality of the product.
(0 of 2 people found this review helpful)
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Review for Drain Screw Gasket for Johnson/Evinrude 307552, Volvo Penta, Mercruiser 12-1918 by a CustomerJuly 20, 2009
I wish the gentlemen that took my order would have told me that the plugs came with the gaskets? Oh well now I have have spares.
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Average Customer Review for U-Joint - Sierra
Based On 2 Reviews
Review for Sierra 18-2104 U-Joint by a CustomerFebruary 21, 2009
nice and way cheaper than i can buy them here for
(2 of 2 people found this review helpful)
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iboats is awesome by Bill - Las Vegas, NevadaSeptember 27, 2013
Super fast shipping, great price, great customer service, what more could someone want?
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Average Customer Review for O-Ring - Sierra
Based On 2 Reviews
Smooth transaction by William - Cincinnati, OhioAugust 14, 2012
easy
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18-7161 by Joseph - Georgetown, DelawareJuly 30, 2011
Correct product, fast shipping
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Average Customer Review for Yoke Assembly - Sierra
Based On 1 Review
works ok by Chris - Ramona, CaliforniaAugust 05, 2011
Part fit ok but the quality of the metal isnt that great. hopefully i get some years out of it
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Average Customer Review for Water Pump Housing Bushing - Sierra
Based On 1 Review
easy life by Jay - Victor, MontanaAugust 12, 2013
great fitting parts . right the first time easy ordering and purchasing . thanks and they getem here fast too.
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Average Customer Review for Cap Upper Drive Unit - Sierra
Based On 1 Review
cap by Keith - Ozark, AlabamaJuly 19, 2011
Haven't gotten it all put together , but im sure it will be a fine product.
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Average Customer Review for Water Tube - Sierra
Based On 1 Review
#1 boat parts store by Jay - Victor, MontanaAugust 22, 2013
another happy customer from my shop got parts fast ,got him back on the water fishing ,thumbs up to the team at Iboats for their fast service !
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Based On 1 Review
Mercruiser shim kit by a Customer - Mobile, AlabamaMay 08, 2013
shims as advertised
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Average Customer Review for Drain Plug - Sierra
Based On 8 Reviews
Review for Sierra 18-2244 Drain Plug by a CustomerSeptember 04, 2009

(1 of 2 people found this review helpful)
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very good price and shipping by Wayne - Montgomery, IllinoisApril 05, 2014
shipping was very fast
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Missing seal by Michael - Minnetrista, MinnesotaFebruary 23, 2014
Either the picture for this product is misleading, or there was a piece missing from the order. The picture shows a plug with a gasket however, only the plug was sent (no gasket). Two emails to the customer service area regarding this went unanswered.
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drain plugs by Willie - Moweaqua, IllinoisSeptember 19, 2013
fast shipping , great product
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Great replacement by Shawn - Peculiar, MissouriAugust 02, 2013
These plugs are a great replacement for the factory plugs. I will always keep a pair in the toolbox.
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Based On 2 Reviews
pinion nut by a Customer - Mobile, AlabamaMay 08, 2013
as advertised
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18-3713 by Joseph - Georgetown, DelawareJuly 30, 2011
Fast shipping, correct product.
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Average Customer Review for Drive Shaft Housing Retaining Nut - Sierra
Based On 1 Review
Drive shaft retainer nut by Jim - Mooresville, IndianaNovember 26, 2012
Fit perfect
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Average Customer Review for Mallory Gasket, Drain Plug 9-60101
Based On 2 Reviews
great by William - Breezy Point, New YorkJuly 14, 2013
perfect fit
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great by Ron - Ogden, UtahNovember 29, 2012
great
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Bearing Kit for Mercruiser 31-35988A2 31-35988A12, GLM 21520 - Sierra
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Bearing Kit for Mercruiser 31-35988A2 31-35988A12, GLM 21520 - Sierra
Your Price: $120.99
Save: $32.89
(21% Off $153.88)
Part # 18-1160
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Replaces OEM part #

  • MERCURY MARINE 31-35988A2
  • MERCURY MARINE 31-35988A12

GLM 21423 replacement parts
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Housing Alignment Bushing - Sierra
Your Price: $18.99
Save: $0.50
(2% Off $19.49)
Part # 18-3236
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Replaces OEM part #

  • MERCURY MARINE 23-32632
For: Mercruiser #1 R/MR/Alpha Drives

GLM 87500 replacement parts
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Upper Unit Seal Kit - Sierra
Your Price: $16.99
Save: $23.05
(57% Off $40.04)
Part # 18-2648


Replaces OEM part #

  • MERCURY MARINE 26-32511A1
For: Mercruiser #1 Units (Including ALPHA) (Also fits 888 Stern drive) S/N 3106717 & UP
Kit Contains:
    (2) 18-2945 Gear Hsg. Drain Screw Gasket - replaces O.E. # 12-19183
    (1) 18-0894 Water Pocket Cover Gasket - replaces O.E. # 27-55810
    (1) 18-2003 Oil Seal - replaces O.E. # 26-68493
    (1) 18-2049 Oil Seal - replaces O.E. # 26-32511
    (1) 18-2056 Oil Seal - replaces O.E. # 26-96503
    (1)18-2944 Seal Ring - replaces O.E. # 26-45577
    (1) 18-3110 Bushing - replaces O.E. # 26-38970
    (2) 18-7153 O-Ring - replaces O.E. # 25-25439
    (1) 18-7161 O-Ring - replaces O.E. # 25-32546
    (1) 18-7169 O-Ring - replaces O.E. # 25-70937
    (1) 18-7445 O-Ring - replaces O.E. # 25-55801

Mercury Marine 32-54236 replacement parts
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Water Tube - Sierra
Your Price: $8.99
Save: $1.57
(14% Off $10.56)
Part # 18-3220
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Replaces OEM part #

  • MERCURY MARINE 32-54236
For #1 -R/MR/Alpha

GLM 11245 replacement parts
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Upper Gear Set for Mercruiser 43-803101T1, GLM 11245 - Sierra
Your Price: $543.99
Save: $100.96
(15% Off $644.95)
Part # 18-2259
Hurry! Only 1 left in stock


Replaces OEM part #

  • MERCURY MARINE 43-803101T1
For: Mercruiser 120/140 Drives with 1.91:1 Gear Ratio.
Kit Contains:
    (1) 18-2205 Gear Set - replaces O.E. # 43-55778A3
    (1) 18-2648 Seal Kit - replaces O.E. # 26-32511A2
    (1) 18-2619-1 Outdrive Gasket Set - replaces O.E. # 27-94996A1
    (1) 18-2820 Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-64818
    (1) 18-1160 Bearing - replaces O.E. # 31-35988A2
    (1) 18-1161 Bearing - replaces O.E. # 31-35990A1
    (1) 18-1165 Bearing - replaces O.E. # 31-61100A1
    (1) 18-2743 Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-94996-2

Upper Housing Ring - Sierra
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Upper Housing Ring - Sierra
Your Price: $10.99
Save: $1.57
(12% Off $12.56)
Part # 18-4296
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Replaces OEM part #

  • MERCURY MARINE 35983
For Upper Housing

Upper Unit Gear Set - Sierra
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Upper Unit Gear Set - Sierra
Your Price: $272.99
Save: $36.01
(11% Off $309.00)
Part # 18-2204
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Replaces OEM part #

  • MERCURY MARINE 43-75325A3
For:
    Mercruiser V-6 and 470/485 (4 Cyl. etc.) and Gen II (S/N K999999 & BELOW) with 1.84:1 Gear Ratio (Drive Gear = 17 teeth, Driven Gear = 19 teeth).

Mercruiser Carrier Nut Washers
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Upper Drive Washer - Sierra
Your Price: $1.99
Part # 18-3712


Replaces OEM part #

  • MERCURY MARINE 12-45810

GLM 28370 replacement parts
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Carrier Assembly Oil Seal - Sierra
Your Price: $40.99
Save: $12.61
(23% Off $53.60)
Part # 18-0577
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Replaces OEM part #

  • MERCURY MARINE 66081A2

Mercruiser Welch Plugs
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Welch Plug - Sierra
Your Price: $5.99
Save: $1.54
(20% Off $7.53)
Part # 18-4272


Replaces OEM part #

  • MERCURY MARINE 19-32652

Mercury Marine 12-19183-2 replacement parts
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Drain Screw Gasket - Sierra
Your Price: $1.99
Save: $0.48
(19% Off $2.47)
Part # 18-2945-9


Replaces OEM part #

  • OMC 307552
  • MERCURY MARINE 12-19183
  • MERCURY MARINE 12-19183 2
  • MERCURY MARINE 12-20260
Package of 2
Used in most lower units and sea water pumps
Used with 18-2244 Drain Screw

GLM 23270 replacement parts
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Shim Kit - Sierra
Your Price: $8.99
Save: $1.74
(16% Off $10.73)
Part # 18-2293
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Replaces OEM part #

  • MERCURY MARINE 15-36178A-1
Upper Bearing Shims
Kit Contains: (1) each .002, .003, .015, & (2) each .010 shims

Mercury Marine 31-61100A1 replacement parts
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Tapered Roller Bearing - Sierra
Your Price: $26.99
Save: $5.00
(15% Off $31.99)
Part # 18-1165
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Replaces OEM part #

  • MERCURY MARINE 31-61100A1

Water Pocket Cover Gasket - Sierra
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Water Pocket Cover Gasket - Sierra
Your Price: $3.99
Save: $0.70
(14% Off $4.69)
Part # 18-0894-9
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Replaces OEM part #

  • MERCURY MARINE 27-55810
  • MERCURY MARINE 27-55810-1
Package of 2

Volvo-Penta U-Joints
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U-Joint - Sierra
Your Price: $34.99
Save: $20.24
(36% Off $55.23)
Part # 18-2104


Replaces OEM part #

  • MERCURY MARINE 75832A2
  • MERCURY MARINE 75832T
  • OMC 3850812
  • OMC 912214
  • OMC 915716
  • VOLVO 853255-8
  • VOLVO 897707-6
For: OMC Cobra Drives (1986-89) and all Mercruiser #1 and ALPHA I Units S/N 1684188-B418818, also Mercruiser TR/TRS and II SSM.
Includes straight grease fitting and 90 degree fitting (Rockwell)

For: Volvo AQ200, 250, 270, 280, 290 (Rockwell)

Mercury Marine 25-32546 replacement parts
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O-Ring - Sierra
Your Price: $8.99
Save: $4.46
(33% Off $13.45)
Part # 18-7161-9


Dimensions ( in )
I.D. 3.250
Width .070

Replaces OEM part #

  • MERCURY MARINE 25-32546
Mercury Marine 46021-1 replacement parts
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Yoke Assembly - Sierra
Your Price: $59.99
Save: $14.75
(19% Off $74.74)
Part # 18-2125


Replaces OEM part #

  • MERCURY MARINE 46020T
  • MERCURY MARINE 46021 1
For: Mercruiser #1/Alpha Units (S/N 1684188 - OK999999)

Shim Kit for Mercruiser 15-35980A1, GLM 23280 - Sierra
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Shim Kit for Mercruiser 15-35980A1, GLM 23280 - Sierra
Your Price: $10.99
Save: $3.44
(23% Off $14.43)
Part # 18-2292
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Replaces OEM part #

  • MERCURY MARINE 15-35980A-1
Drive Gear Shims
Kit Contains: (1) each .002, .003, .005, .005, .010, & .025 shims

GLM 28050 replacement parts
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Drive Shaft Assembly for Mercruiser, GLM 28050 - Sierra
Your Price: $327.99
Save: $268.75
(45% Off $596.74)
Part # 18-9218
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Replaces OEM part #

  • MERCURY MARINE 814819A2
For: All Mercruiser #1, R/MR/ALPHA Gen II (OK999999 & Below) (1971-97)

Mercury Marine 43-18411A2 replacement parts
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Upper Unit Gear Set for Mercruiser 43-18410A2 43-18411A2, GLM 11210 - Sierra
Your Price: $364.99
Save: $90.84
(19% Off $455.83)
Part # 18-2201
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Replaces OEM part #

  • MERCURY MARINE 43-18410A2
  • MERCURY MARINE 43-18411A2
For:
    Most Mercruiser V-8 Drives and Gen II(S/N OK999999 & Below) with 1.5:1 Gear Ratio(Drive Gear = 22 teeth, Driven Gear = 20 teeth). Also fits Mercruiser stern drive models: 225 (S/N 3856268 - 4200499), 260 (S/N 4898730 - 6225576), 898/228 (S/N 4782330 - 6225576), 888 (S/N 3106717 & UP), V8/MR/Alpha One (S/N 6225577 & UP).
Kit Includes:
    (1) 18-1142 Upper Pinion Bearing - replaces O.E. # 31-32573A1

Johnson / Evinrude / OMC 983891 replacement parts
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Tapered Roller Bearing - Sierra
Your Price: $31.99
Save: $6.11
(16% Off $38.10)
Part # 18-1161
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Replaces OEM part #

  • OMC 983891
  • MERCURY MARINE 31-35990A1

GLM 12830 replacement parts
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Water Pump Housing Bushing - Sierra
Your Price: $2.99
Save: $0.09
(2% Off $3.08)
Part # 18-3110


Replaces OEM part #

  • MERCURY MARINE 26-38970
  • Part of 18-3116 Housing

Volvo / OMC 912213 replacement parts
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U-Joint Center Socket - Sierra
Your Price: $57.99
Save: $10.22
(14% Off $68.21)
Part # 18-2128
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Replaces OEM part #

  • MERCURY MARINE 39383 1
  • MERCURY MARINE 39383T
  • OMC 912213
For: All OMC Cobra & Mercruiser IA/IB/IC & EZ, MC-I, R, MR, Alpha One, Gen II (OL949778 & below), Bravo (OM111207 & below), MC II & TS

Mercury Marine 94998A2 replacement parts
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Cap Upper Drive Unit - Sierra
Your Price: $95.99
Save: $23.77
(19% Off $119.76)
Part # 18-2381


Replaces OEM part #

  • MERCURY MARINE 94998A 4
  • MERCURY MARINE 94998A2
For: Mercruiser Alpha I, except Gen II, (S/N 6225577 & Later).

Water Tube - Sierra
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Water Tube - Sierra
Your Price: $27.99
Save: $8.33
(22% Off $36.32)
Part # 18-3219


Replaces OEM part #

  • MERCURY MARINE 42724A3
For: Mercruiser I and Alpha I drives. Models: I, 1A,1B, 1C, 1CEZ, 120, 140, 160, 165, 888, 898, 228, 225-S, 233, 250, 260, 470, 485, R, MR, & Alpha. Comes with (4) 10-3229 Bolt - replaces O.E. # 10-28668.

Mercury Marine 26-68493 replacement parts-Oil Seal - Sierra
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Oil Seal - Sierra
Your Price: $12.99
Save: $5.19
(28% Off $18.18)
Part # 18-2003
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Shaft Size - 2.250"
Outer Diameter - 3.000"
Width - 0.437

Replaces OEM part #

  • MERCURY MARINE 26-68493
  • MERCURY MARINE 26-823894
GLM 22440 replacement parts

Mr / Alpha Water Pocket Screw - Sierra
Your Price: $3.99
Save: $3.01
(43% Off $7.00)
Part # 18-3229-9
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Replaces OEM part #

  • MERCURY MARINE 10-28668
For MR/Alpha
Pkg. of 5

Mercury Marine 43-55778A3 replacement parts
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Upper Unit Gear Set - Sierra
Your Price: $274.99
Save: $70.72
(20% Off $345.71)
Part # 18-2205
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Replaces OEM part #

  • MERCURY MARINE 43-55778A3
For:
    120/140 (S/N 2791957 & UP) and Gen II (S/N K999999 & BELOW) with 1.98:1 Gear Ratio (Drive Gear = 20 teeth Driven Gear = 24 teeth).

GLM 28300 replacement parts
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Upper Drive Shaft Top Cover Screw for Mercruiser 10-98794, GLM 28300 - Sierra
Your Price: $2.99
Save: $0.68
(18% Off $3.67)
Part # 18-3231
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Replaces OEM part #

  • MERCURY MARINE 10-98794

Mercury Marine 59830 A7 replacement parts
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Long Yoke - Sierra
Your Price: $101.99
Save: $21.00
(17% Off $122.99)
Part # 18-2146
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Replaces OEM part #

  • MERCURY MARINE 59830A1
  • MERCURY MARINE 59830A 7
  • OMC 912212
  • OMC 3850815
For: All OMC Cobra (1986-Up) & all Mercruiser #1, R, MR, Aplha I, Alpha I Gen II, Bravo & Blackhawk

Mercury Marine 43-803116T1 replacement parts
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Upper Gear Set - Sierra
Your Price: $536.99
Save: $102.01
(15% Off $639.00)
Part # 18-2256
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Replaces OEM part #

  • MERCURY MARINE 43-803116T1
For: Most Mercruiser V-8 Drives with (1.5:1)
Kit Contains:
    (1) 18-2201 Upper Unit Gear Set - replaces O.E. # 43-18410A2
    (1) 18-2648 Seal Kit - replaces O.E. # 26-32511A2
    (1) 18-2619-1 Outdrive Gasket Set - replaces O.E. # 27-94996A1
    (1) 18-2820 Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-64818
    (1) 18-2743 Drive Shaft Housing to Bell Housing Gasket 27-94996-2
    (1) 18-1160 Bearing - replaces O.E. # 31-35988A2
    (1) 18-1165 Bearing - replaces O.E. # 31-61100A1
    (1) 18-1142 Bearing - replaces O.E. # 31-35990A1

Johnson / Evinrude / OMC 911851 replacement parts
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O-Ring - Sierra
Your Price: $4.99
Save: $3.61
(41% Off $8.60)
Part # 18-7153-9
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Pkg of 5

Dimensions ( in )
I.D. .0860
Width .100

Replaces OEM part #

  • OMC 3852565
  • OMC 911851
  • MERCURY MARINE 25-21836
Shim Kit for Mercruiser 15-45691A1, GLM 23260 - Sierra
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Shim Kit for Mercruiser 15-45691A1, GLM 23260 - Sierra
Your Price: $7.99
Save: $0.72
(8% Off $8.71)
Part # 18-2283


Replaces OEM part #

  • MERCURY MARINE 15-45691A1
Kit Contains: (1) each .002, .003, .005, & .010 shims

Mercruiser Lower Unit Drain Plugs
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Drain Plug - Sierra
Your Price: $1.99
Save: $0.92
(31% Off $2.91)
Part # 18-2244


Replaces OEM Part #

  • MERCURY MARINE 10-79953A2
For: Mercruiser #1/R/MR/Alpha I Gen II (Both Upper and Lower Units)

Johnson / Evinrude / OMC 911686 replacement parts
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O-Ring - Sierra
Your Price: $11.99
Save: $5.56
(31% Off $17.55)
Part # 18-7169-9
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Dimensions ( in )
I.D. 3.500
Width .135

Replaces OEM part #

  • CHRYSLER FORCE 25-F24278
  • OMC 911686
  • MERCURY MARINE 25-70937
GLM 11225 replacement parts
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Upper Gear Set - Sierra
Your Price: $593.99
Part # 18-2257
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Replaces OEM part #

  • MERCURY MARINE 43-803112T1
For: Mercruiser 6 Cylinder Inline with 1.65:1 Gear Ratio
Kit Contains:
    (1) 18-2203 Gear Set - replaces O.E. # 43-45814A5
    (1) 18-2648 Seal Kit - replaces O.E. # 26-32511A2
    (1) 18-2619-1 Outdrive Gasket Set - replaces O.E. # 27-94996A1
    (1) 18-2820Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-64818
    (1) 18-1160 Bearing - replaces O.E. # 31-35988A2
    (1) 18-1161 Bearing - replaces O.E. # 31-35990A1
    (1) 18-1165 Bearing - replaces O.E. # 31-61100A1
    (1) 18-2743 Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-94996-2

Upper Unit Gear Set - Sierra
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Upper Unit Gear Set - Sierra
Your Price: $334.99
Part # 18-2203
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Replaces OEM part #

  • MERCURY MARINE 43-45814A5
For:
    Mercruiser 6 Cyl. Inline (S/N K999999 & BELOW) with 1.65:1 Gear Ratio (Drive Gear = 24 teeth, Driven Gear = 24 teeth)

Nut for Mercruiser 11-22339, GLM 28360 - Sierra
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Nut for Mercruiser 11-22339, GLM 28360 - Sierra
Your Price: $3.99
Part # 18-3713


Replaces OEM part #

  • MERCURY MARINE 11-22339
5/8" - 18

Mr Alpha Housing Plug for Mercruiser 19-47579, GLM 21890 - Sierra
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Mr Alpha Housing Plug for Mercruiser 19-47579, GLM 21890 - Sierra
Your Price: $3.99
Save: $1.58
(28% Off $5.57)
Part # 18-3232-9
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Replaces OEM part #

  • MERCURY MARINE 19-47579
Package of 5
For: Mercruiser MR ALPHA

GLM 85020 replacement parts
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Oil Seal - Sierra
Your Price: $13.99
Save: $1.81
(11% Off $15.80)
Part # 18-2049
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Shaft Size - 1.250"
Outer Diameter - 2.005"
Width - 0.388"

Replaces OEM part #

  • MERCURY MARINE 26-32511
GLM 11130 replacement parts
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Drive Shaft for Mercruiser 45-55796, GLM 11130 - Sierra
Your Price: $88.99
Save: $22.29
(20% Off $111.28)
Part # 18-2179
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Replaces OEM part #

  • MERCURY MARINE 45-55796

GLM 85060 replacement parts
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Oil Seal - Sierra
Your Price: $9.99
Save: $1.07
(9% Off $11.06)
Part # 18-2056
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Shaft Size - 0.875"
Outer Diameter - 1.375"
Width - 0.250"

Replaces OEM part #

  • MERCURY MARINE 26-96503 1
  • MERCURY MARINE 26-66302
Mercury Marine 25-55801 replacement parts
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O-Rings - Sierra
Your Price: $1.99
Save: $1.55
(43% Off $3.54)
Part # 18-7445-9
Hurry! Only 1 left in stock
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Dimensions ( in )
I.D. .801
Width .070

Replaces OEM part #

  • MERCURY MARINE 25-55801
GLM 22031 replacement parts
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Welch Plug - Sierra
Your Price: $1.99
Save: $0.39
(16% Off $2.38)
Part # 18-4273
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Replaces OEM part #

  • MERCURY MARINE 19-42682

GLM 11235 replacement parts
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Replaces OEM part #

  • MERCURY MARINE 43-803114T1
For: Mercruiser V-6(470/485) with 1.84:1 Gear Ratios.
Kit Contains:
    (1) 18-2204 Gear Set - replaces O.E. # 43-75325A3
    (1) 18-2648 Seal Kit - replaces O.E. # 26-32511A2
    (1) 18-2619-1 Outdrive Gasket Set - replaces O.E. # 27-94996A1
    (1) 18-2820 Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-64818
    (1) 18-1160 Bearing - replaces O.E. # 31-35988A2
    (1) 18-1161 Bearing - replaces O.E. # 31-35990A1
    (1) 18-2743 Drive Shaft Housing to Bell Housing Gasket - replaces O.E. # 27-94996-2
    (1) 18-1165 Bearing - replaces O.E. # 31-61100A1

GLM 28350 replacement parts
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Drive Shaft Housing Retaining Nut - Sierra
Your Price: $22.99
Save: $4.10
(15% Off $27.09)
Part # 18-3752


Replaces OEM part #

  • MERCURY MARINE 816811 2
  • MERCURY MARINE 816811-1

Mallory Gear Repair Kit, Upper (1.98:1) 9-79203

Mallory Gear Repair Kit, Upper (1.98:1) 9-79203
Spring Sale Price: $489.59
Save: $155.36
(24% Off $644.95)
Part # 9-79203
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):43-803101T 1
Fits Application:20-24 teeth, MR/Alpha I, 1983-90

Mallory Gear Repair Kit, Upper (1.50:1) 9-79202

Mallory Gear Repair Kit, Upper (1.50:1) 9-79202
Spring Sale Price: $483.29
Save: $155.71
(24% Off $639.00)
Part # 9-79202
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):43-803116T 1
Fits Application:20-22 teeth, MR/Alpha I, 1983-90

Mallory washer 9-78107

Mallory washer 9-78107
Spring Sale Price: $1.79
Part # 9-78107
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):12-45810
Fits Application:Upper unit drive gear

Mallory Ring, Upper Unit Spacer 9-78105

Mallory Ring, Upper Unit Spacer 9-78105
Spring Sale Price: $9.89
Save: $2.67
(21% Off $12.56)
Part # 9-78105
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):35983
Fits Application:Upper Unite gear assy.

Mallory Seal, Carrier U-joint 9-78100

Mallory Seal, Carrier U-joint 9-78100
Spring Sale Price: $36.89
Save: $16.71
(31% Off $53.60)
Part # 9-78100
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Replaces GLM #:28370
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):66081A 2
Fits Application:Upper unit, MC-1,R.MR.Alpha I, Gen II

Mallory O-Ring 9-76568
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Mallory O-Ring 9-76568
Spring Sale Price: $1.79
Part # 9-76568
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):25-55801

Mallory O-Ring 9-76551
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Mallory O-Ring 9-76551
Spring Sale Price: $2.69
Save: $0.82
(23% Off $3.51)
Part # 9-76551
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):25-70937

Mallory O-Ring 9-76546
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Mallory O-Ring 9-76546
Spring Sale Price: $1.79
Save: $0.90
(33% Off $2.69)
Part # 9-76546
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):25-32546

Mallory O-Ring 9-76505
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Mallory O-Ring 9-76505
Spring Sale Price: $0.89
Save: $0.83
(48% Off $1.72)
Part # 9-76505
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):25-25439

Mallory Oil Seal 9-76130

Mallory Oil Seal 9-76130
Spring Sale Price: $8.99
Save: $2.07
(18% Off $11.06)
Part # 9-76130
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser / Mercury
Replaces Original Equipment Manufacturer # (OEM #):26-96503-1
Fits Application:Mercruiser upper unit driven gear

Mallory Oil Seal 9-76102

Mallory Oil Seal 9-76102
Spring Sale Price: $14.39
Save: $3.79
(20% Off $18.18)
Part # 9-76102
Hurry! Only 1 left in stock
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Replaces GLM #:85030
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):26-68493, 26-823894
Fits Application:Mercruiser U-joint short yoke

Mallory Seal Kit, Upper Gear Housing 9-74303

Mallory Seal Kit, Upper Gear Housing 9-74303
Spring Sale Price: $30.59
Save: $9.45
(23% Off $40.04)
Part # 9-74303
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Replaces GLM #:87500
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):26-32511A1
Fits Application:R/MR/Alpha 1

Mallory Drain Plug 9-72650

Mallory Drain Plug 9-72650
Spring Sale Price: $2.69
Save: $0.22
(7% Off $2.91)
Part # 9-72650
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Replaces GLM #:22420
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #): 10-79953A2
Fits: All MC-I, Alpha I, Gen II, TR & TRS

Mallory Drive Shaft 9-72461

Mallory Drive Shaft 9-72461
Spring Sale Price: $82.79
Save: $28.49
(25% Off $111.28)
Part # 9-72461
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):45-55796
Fits Application:Upper unit I/R/MR/Alpha I

Mallory U-joint 9-72404

Mallory U-joint 9-72404
Spring Sale Price: $43.19
Save: $12.04
(21% Off $55.23)
Part # 9-72404
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Replaces Original Equipment Manufacturer(OEM):Mercruiser / OMC/ Volvo
Replaces Original Equipment Manufacturer # (OEM #): Mercruiser 75832T / OMC 915716 / Volvo 897707-6
Fits: Mercruiser IA/IB/IC & EZ, MC-I, R, MR, Alpha 1 (s/n 0B418819 & below) MC II, & TR/TRS

Mallory Center Socket 9-72403

Mallory Center Socket 9-72403
Spring Sale Price: $52.19
Save: $16.02
(23% Off $68.21)
Part # 9-72403
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Replaces GLM #:28100
Original Equipment Manufacturer(OEM): Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):Mercruiser 39383-1/ OMC 912213, 3850813 / Volvo 3850813
Fits: Merc IA/IB/IC & EZ Shift, MC-I, R, MR, ALPHA 1, Gen II, s/n 0L949778 & below, Bravo s/n 0M111207 & below, MC II, TR & TRS, OMC Cobra, Volvo SX Drive

Mallory Yoke, Long 9-72401
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Mallory Yoke, Long 9-72401
Spring Sale Price: $91.79
Save: $31.20
(25% Off $122.99)
Part # 9-72401
Hurry! Only 1 left in stock
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Replaces GLM #:28315
Replaces Original Equipment Manufacturer(OEM):Mercruiser, OMC, Volvo
Replaces Original Equipment Manufacturer # (OEM #):
Mercruiser 814819A3
OMC 912212
Volvo 3850815

Fits: Most Mercruiser, OMC Cobra,Vovo SX drives

Mallory Yoke 9-72400
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Mallory Yoke 9-72400
Spring Sale Price: $56.69
Save: $18.05
(24% Off $74.74)
Part # 9-72400
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Replaces GLM #:28310
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):46020-1

Mercury Marine 816811-2 replacement parts

Mallory Retaining Nut, Dr Shft Hsg 9-72154
Spring Sale Price: $20.69
Save: $6.40
(23% Off $27.09)
Part # 9-72154
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Replaces GLM #:28350
Replaces Original Equipment Manufacturer(OEM):MERCRUISER
Replaces Original Equipment Manufacturer # (OEM #):816811 2
Fits Application: V-6

Mallory Gasket, Drain Plug 9-60101

Mallory Gasket, Drain Plug 9-60101
Spring Sale Price: $0.89
Save: $0.36
(28% Off $1.25)
Part # 9-60101


Replaces GLM #:31170
Replaces Original Equipment Manufacturer(OEM):Mercruiser / Mercury / Johnson/OMC
Replaces Original Equipment Manufacturer # (OEM #):12-19183-2 / 307552
Fits Application:Most Mercury OB & Mercruiser

Mallory Water Pocket Cover Gasket 9-60037

Mallory Water Pocket Cover Gasket 9-60037
Spring Sale Price: $1.79
Save: $0.54
(23% Off $2.33)
Part # 9-60037
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-55810
Fits Application:MC-1,R,MR.Alpha I

Mallory Water Pump Housing Seal 9-43604

Mallory Water Pump Housing Seal 9-43604
Spring Sale Price: $2.69
Save: $0.39
(12% Off $3.08)
Part # 9-43604
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):26-38970
Fits Application:OB & Sterndrive

DRIVESHAFT - Mallory
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DRIVESHAFT - Mallory
Spring Sale Price: $422.09
Save: $124.49
(22% Off $546.58)
Part # 9-72463
Hurry! Only 1 left in stock
No Reviews | Write Review


Drive Shaft
Replaces Original Equipment Manufacturer(OEM): Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):45-853648
Fits: Alpha One Gen II 1998-Up

Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!
Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!