Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives

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Figure #

Description

Figure #

Description

Part #

O.E.M. #

not numberedUpper Gear Housing Complete, 2.5L,3.0L,5.0L18-4805 984771, 986382
not numberedUpper Gear Housing Complete, 4.3L18-4806 984765, 986380
not numberedUpper Gear Housing Complete, 5.7L, 5.8L18-4804 984770, 986381
1Upper Gear Housing, Basic w/ Inserts-984518
2Gearcase Insert-910935
3Gearcase Insert-911779, 3852541
4Gearcase Insert-910901
6Gearcase Insert-910901
7Gearcase Insert-910901
5Gearcase Insert-911858, 3852567
8Shift Rod Guide-912137
9Water Passage Cover18-4837 911734
10Gasket, Water Passage Cover18-0884911733
11Thrust Plate, Starboard-911838, 3852562
12Shim, Thrust Plate, 0.015"18-1713 911839, 3852563
13Thrust Plate, Port-911837, 3852561
14Retainer Ring, Thrust Plate-910953
15Nut18-3730 912920, 3852648
16Washer-911833
17Gasket, Outdrive Mounting18-2918 911836, 915840
18Gasket, Adapter to Gear Housing18-0911 911698
19O-Ring, Adapter, Large18-7407 911700
20O-Ring, Adapter, Small18-7403 909316
21Water Pump Shaft Seal18-2068 911701, 915702, 916058, 3853655
22Adapter, Water Pump to Gear Housing-911699
23Screw18-1598 908668, 341013
-Water Pump Kit (Incl. items 24-49)18-3348 984461, 984744
24Gasket, Plate to Adapter18-2916 911702
25Plate, Water Pump18-3121 911703
26Impeller18-3058 983895, 777128
27Liner, Water Pump Cover18-3145 911844
28Seal, Water Pump Housing18-2541 911704
29Impeller Housing18-3206 984744
30Screw-912238
31Shim, Bearing Carrier 0.010"(1)18-0207 911668
31Shim, Bearing Carrier 0.001"(1)18-0209 911669, 911670, 611671, 911672, 911673, 911674, 911675, 911676, 911677
31Shim, Bearing Carrier 0.003"(1)18-0211911669, 911670, 611671, 911672, 911673, 911674, 911675, 911676, 911678
32Pinion Nut18-3769 911753
33Nut Retainer18-3610 911752
34Pinion WasherNSS911697
35Pinion Bearing, Lower18-1170 983892
36Bearing Carrier, Pinion18-4828 911750
37Pinion Bearing, Upper18-1161 983891
38Gear Set, 21:1618-1600 983825
38Gear Set, 21:1818-1601 983826
38Gear Set, 21:1918-1602 984012
39Retainer Ring, Pinion Housing18-3768 911751
40O-Ring, Gear Housing Cover18-7107 313175
41Shim, Gear Position, 0.003"18-02062 911662
41Shim, Gear Position, 0.005"18-02063 911663
41Shim, Gear Position, 0.007"18-02064 911664
41Shim, Gear Position, 0.010"18-02065 911665
41Shim, Gear Position, 0.012"18-02066 911666
41Shim, Gear Position, 0.015"18-02067 911667
42Bearing, U-Joint Shaft18-1171 983878
43Nut, Gear to U-Joint18-3770 911937
44Centering Cone18-4835912029
45Gear Set, 21:1618-1600 983825
45Gear Set, 21:1818-1601 983826
45Gear Set, 21:1918-1602 984012
46Bearing, Bearing Carrier18-1172 983877
47O-Ring, Bearing Carrier18-7169 911686
48Shim, Bearing Carrier, 0.003", Green18-0227 911678
48Shim, Bearing Carrier, 0.004", Tan18-0229 911679
48Shim, Bearing Carrier, 0.005", Blue18-02060 911680
48Shim, Bearing Carrier, 0.010", Brown18-02061 911681
49Gear Bearing Carrier18-4838911683
50Seal, Bearing Carrier18-2067 911685
51U-Joint & Water Pump Shaft Assy.18-2338 983880
52Stub & Water Pump Shaft18-6399 984264
53U-Joint Assy18-2104 912214
54Yoke Shaft18-2146 912212
55O-Ring, U-Joint Shaft18-7153 911851, 3852565
56Gear Housing Cover18-4838911845, 986363
57Oil Indicator18-8369 914488
58O-Ring, Oil Indicator18-7116 303067
59Screw, Gear Housing Cover18-1599123018
60Cover, Water Pump Access18-4750 983967
61Screw, Water Pump Access Cover18-4749-9911859, 3852568

Figure #

Description

Part #

O.E.M. #

Notes:
(1) : For 0.011" to 0.019" shims, order shim 18-0207 plus combination of shims 18-0209 and 18-0211 to make desired thickness.
Refine Parts List
Figure #

Description

Sierra

18-4805 Complete Upper Gear Housing - 21:18 Ratio for OMC Sterndrive/Cobra Stern Drives
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Your Price: $3539.00



  • replaces: OMC 984771
  • replaces: OMC 986382

18-4806 Complete Upper Gear Housing - 21:19 Ratio for OMC Sterndrive/Cobra Stern Drives
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Your Price: $3499.00



  • replaces: OMC 984765
  • replaces: OMC 986380

18-4804 Complete Upper Gear Housing - 21:16 Ratio for OMC Sterndrive/Cobra Stern Drives
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Your Price: $3499.00



  • replaces: OMC 986381
  • replaces: OMC 984770

18-4837 Water Passage Cover
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Your Price: $49.99



Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-1713
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18-1713
Part # 18-1713
Your Price: $7.49



Drive System Hardware for OMC Sterndrive/Cobra Stern Drives-18-3730 Lock Nut
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18-3730 Lock Nut
Part # 18-3730
Your Price: $4.41



  • replaces: Volvo 3852648-9
  • replaces: OMC 3852648

18-2918 Outdrive Gasket for OMC Sterndrive/Cobra Stern Drives
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Your Price: $27.45



  • replaces: OMC 915840
  • replaces: OMC 911836

18-0911 Water Pump Base Gasket for OMC Sterndrive/Cobra Stern Drives
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Your Price: $2.67



  • replaces: OMC 911698

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-7407 O-Ring
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18-7407 O-Ring (5 count)
Part # 18-7407
Your Price: $34.95



  • replaces: OMC 3852531
  • replaces: OMC 911700

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-7403 O-Ring
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18-7403 O-Ring (5 count)
Part # 18-7403
Your Price: $9.50



  • replaces: OMC 909316

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-2068 Oil Seal
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18-2068 Oil Seal
Part # 18-2068
Your Price: $12.21



  • replaces: OMC 3853655
  • replaces: OMC 916058
  • replaces: OMC 915702
  • replaces: OMC 911701

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-1598
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18-1598
Part # 18-1598
Your Price: $3.69



18-3348 Water Pump Housing Kit for OMC Sterndrive/Cobra Stern Drives
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Your Price: $53.35



  • replaces: OMC 984461
  • replaces: OMC 984744

18-2916 Water Pump Housing Gasket for OMC Sterndrive/Cobra Stern Drives
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Your Price: $3.38



  • replaces: OMC 911702

18-3121 Impeller Plate for OMC Sterndrive/Cobra Stern Drives
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Your Price: $13.99



  • replaces: OMC 911703

18-3058 Impeller - Dia. 2 5/16",Dpth. 1 5/8" - 10 Fins - Neoprene - Key for OMC Sterndrive/Cobra Stern Drives
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Your Price: $18.24



  • replaces: OMC 983895

Brass Insert - Shaft Dia. 1/2"

18-3145 Pump Liner for OMC Sterndrive/Cobra Stern Drives
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Your Price: $16.71



  • replaces: OMC 911844

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-2541 Rubber Seal
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18-2541 Rubber Seal
Part # 18-2541
Your Price: $7.29



  • replaces: OMC 911704

18-3206 Water Pump Housing for OMC Sterndrive/Cobra Stern Drives
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Your Price: $30.99



  • replaces: OMC 984744

18-0207 Shim - .010 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $5.49



  • replaces: OMC 911668

18-0209 Shim - .001 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $5.49



  • replaces: OMC 911669
  • replaces: OMC 911672
  • replaces: OMC 911671
  • replaces: OMC 911673
  • replaces: OMC 911674
  • replaces: OMC 911677
  • replaces: OMC 911670
  • replaces: OMC 911675
  • replaces: OMC 911676

18-0211 Shim - .003 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $5.49 (Out of stock)



  • replaces: OMC 911672
  • replaces: OMC 911669
  • replaces: OMC 911671
  • replaces: OMC 911673
  • replaces: OMC 911678
  • replaces: OMC 911674
  • replaces: OMC 911670
  • replaces: OMC 911675
  • replaces: OMC 911676

18-3769 Pinion Nut for OMC Sterndrive/Cobra Stern Drives
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Your Price: $38.49



  • replaces: OMC 911753

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-3610
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18-3610
Part # 18-3610
Your Price: $15.69



18-1170 Lower Pinion Bearing
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Your Price: $64.15



  • replaces: OMC 983892
  • replaces: Mercury Marine 31-812767A1

18-4828 Pinion Bearing Carrier for OMC Sterndrive/Cobra Stern Drives
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Your Price: $116.02



  • replaces: OMC 911750

18-1161 Tapered Roller Bearing
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Your Price: $39.41



  • replaces: Mercury Marine 31-35990A1
  • replaces: OMC 983891

18-1600 Upper Gear Kit - With Bearing for OMC Sterndrive/Cobra Stern Drives
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Your Price: $1028.01



  • replaces: OMC 983825

18-1601 Upper Gear Kit - With Bearing for OMC Sterndrive/Cobra Stern Drives
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Your Price: $949.00



  • replaces: OMC 983826

18-1602 Upper Gear Kit for OMC Sterndrive/Cobra Stern Drives
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Your Price: $889.00



  • replaces: OMC 984012

Bearing Carriers and Related Products for OMC Sterndrive/Cobra Stern Drives-18-3768 Cover Nut
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18-3768 Cover Nut
Part # 18-3768
Your Price: $71.99



  • replaces: OMC 911751

18-7107 O-Ring - I.D. 4.750 Width (In.) .135
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Your Price: $15.20



  • replaces: Mercury Marine 25-67202
  • replaces: OMC 313175

18-02062 Shim - .003 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $4.69



  • replaces: OMC 911662

18-02063 Shim - .005 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $4.49



  • replaces: OMC 911663

18-02064 Shim - .007 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $4.49



  • replaces: OMC 911664

18-02065 Shim - .010 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $4.49



  • replaces: OMC 911665

18-02066 Shim - .012 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $4.69



  • replaces: OMC 911666

18-02067 Shim - .015 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $4.69



  • replaces: OMC 911667

18-1171 U-Joint Shaft Bearing Set for OMC Sterndrive/Cobra Stern Drives
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Your Price: $55.04



  • replaces: OMC 983878

18-3770 U-Joint Nut for OMC Sterndrive/Cobra Stern Drives
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Your Price: $22.99



  • replaces: OMC 911937

18-4835 Centering Cone
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18-4835 Centering Cone
Part # 18-4835
Your Price: $37.49 (Out of stock)



18-1172 Carrier Bearing for OMC Sterndrive/Cobra Stern Drives
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Your Price: $93.96



  • replaces: OMC 983877

18-7169 Bearing Carrier Seal - I.D. 3.500 Width (In.) .135
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Your Price: $18.00



  • replaces: OMC 911686
  • replaces: Mercury Marine 25-70937
  • replaces: Chrysler Force 25-F24278

18-0227 Shim - .003 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $8.46



  • replaces: OMC 911678

18-0229 Shim - .004 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $7.73



  • replaces: OMC 911679

18-02060 Shim - .005 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $5.49



  • replaces: OMC 911680

18-02061 Shim - .010 for OMC Sterndrive/Cobra Stern Drives
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Your Price: $8.50



  • replaces: OMC 911681

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-2067 Oil Seal
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18-2067 Oil Seal
Part # 18-2067
Your Price: $32.02



  • replaces: OMC 911685

18-2338 U-Joint Assembly for OMC Sterndrive/Cobra Stern Drives
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Your Price: $574.00



  • replaces: OMC 983880

18-6399 Shaft & Stub Assembly for OMC Sterndrive/Cobra Stern Drives
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Your Price: $334.86



  • replaces: OMC 984264

18-2104 U-Joint Cross Bearing
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Your Price: $55.23



  • replaces: OMC 3850812
  • replaces: Mercury Marine 75832A2
  • replaces: Volvo 853255-8
  • replaces: OMC 915716
  • replaces: Mercury Marine 75832T
  • replaces: Volvo 897707-6
  • replaces: OMC 912214

Heavy Duty Includes Both Straight & 90° Grease Fitting. (Rockwell)

Yokes, Assemblies and Related Products for Volvo Penta Stern Drives-18-2146 Yoke
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18-2146 Yoke
Part # 18-2146
Your Price: $126.79



  • replaces: OMC 3850815
  • replaces: Volvo 3850815
  • replaces: Mercury Marine 59830A7
  • replaces: Mercury Marine 59830A1
  • replaces: OMC 912212

Yokes, Assemblies and Related Products for Mercury/Mariner Outboard Motors
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Your Price: $8.75



  • replaces: OMC 3852565
  • replaces: Mercury Marine 25-21836
  • replaces: OMC 911851

18-8369 Oil Indicator With Washer for OMC Sterndrive/Cobra Stern Drives
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Your Price: $14.49



  • replaces: OMC 914488

18-7116 O-Ring - I.D. .360 Width (In.) .100
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Your Price: $0.99



  • replaces: Volvo 3852045
  • replaces: OMC 303067
  • replaces: Mercury Marine 25-62704

Upper Gear Housing Diagram for OMC Sterndrive/Cobra Stern Drives-18-1599
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18-1599
Part # 18-1599
Your Price: $8.69 (Out of stock)



18-4750 Cover Assembly for OMC Sterndrive/Cobra Stern Drives
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Your Price: $85.49



  • replaces: OMC 983967

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  • A 20% re-packaging fee may apply for damaged or opened product packaging.
  • Merchandise returned after 30 days will be charged a 20% re-stocking fee. After 90 days, the merchandise is no longer returnable.

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