OMC Sterndrive/Cobra Lower Unit Seal Kits

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Model/Liter:
Year:

Model/Liter

Year

Sierra Lower Gearcase Seal Kit

Mallory Lower Gearcase Seal Kit

2.3 1987-1990 18-2671 9-74401
2.5 (1)1982-1986 18-2664 -
2.5 (2)1986 18-2671 9-74401
3 (1)1982-1986 18-2664 -
3 (2)1986-1991 18-2671 9-74401
3.8 1981-1986 18-2665 9-74400
4.3 (1)1985-1986 18-2665 9-74400
4.3 (2)1986-1991 18-2672 9-74402
5 (1)1982-1986 18-2665 9-74400
5 (2)1986-1991 18-2672 9-74402
5.7 (1)1982-1986 18-2665 9-74400
5.7 (2)1986-1989 18-2672 9-74402
5.7 (3)1990-1991 18-2672 9-74402
5.8 1989-1990 18-2672 9-74402
80 1969 18-2663 -
90 1970 18-2663 -
100 1972 18-2663 -
100 1973 18-2663 -
120 1968-1972 18-2663 -
120 1973-1977 18-2663 -
120 1978-1981 18-2664 -
140 1973-1977 18-2663 -
140 1978-1981 18-2664 -
155 1968-1972 18-2663 -
165 1972 18-2663 -
165 1973-1976 18-2663 -
170 1974 18-2663 -
175 1975-1977 18-2663 -
185 1968 18-2663 -
185 1978-1980 18-2665 9-74400
190 1974-1977 18-2663 -
200 1968 18-2663 -
200 1979-1981 18-2665 9-74400
210 1968-1970 18-2663 -
215 1971 18-2663 -
225 1972 18-2663 -
225 1973-1976 18-2663 -
225 1978 18-2665 9-74400
230 1979-1981 18-2665 9-74400
235 1971 18-2663 -
235 1975-1977 18-2663 -
240 1978 18-2665 9-74400
245 1972 18-2663 -
245 1973-1975 18-2663 -
250 1979 18-2665 9-74400
260 1979-1981 18-2665 9-74400
262 1989 18-2672 9-74402
350 1988-1989 18-2672 9-74402

Model/Liter

Year

Sierra Lower Gearcase Seal Kit

Mallory Lower Gearcase Seal Kit

Notes:
  • (1) : Except Cobra
  • (2) : Cobra
  • (3) : Except L.E.
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Your Price: $36.06
Save: $19.51
(35% Off $55.57)
Part # 18-2663 ValueShip™ Eligible
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Replaces OEM part #
  • OMC 981797
    100-245 Stringer Unit ( 1968-77 )


  • Contains:
  • ( 1 ) 18-0168 Grommet, replaces O.E.# 908594
    ( 4 ) 18-2012 Oil Seal, replaces O.E.# 310599
    ( 1 ) 18-2020 Oil Seal, replaces O.E.# 310649
    ( 2 ) 18-2058 Oil Seal, replaces O.E.# 313353
    ( 1 ) 18-2851 Swivel Bearing To Lower Gear Case Gasket, replaces O.E.# 313368
    ( 2 ) 18-4248 Washer, replaces O.E.# 311598
    ( 4 ) 18-7120 O-Ring, replaces O.E.# 307853, 322598
    ( 1 ) 18-7129 O-Ring, replaces O.E.# 314491
    ( 1 ) 18-7135 O-Ring, replaces O.E.# 310584
    ( 1 ) 18-7167 O-Ring, replaces O.E.# 310414
Your Price: $39.42
Save: $28.31
(41% Off $67.73)
Part # 18-2664 ValueShip™ Eligible
SHIPS TODAY!* if ordered in 12 hrs 12 mins.
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Replaces OEM part #
  • OMC 982947
    4 Cyl ( 400 0 Stringer Unit ( 1978-86 )


  • Contains:
    ( 1 ) 18-0110 Shift Housing Gasket, replaces O.E.# 324670
    ( 2 ) 18-3133 Housing Screw, replaces O.E.# 908158
    ( 1 ) 18-0188 Washer, replaces O.E.# 909748
    ( 1 ) 18-2020 Oil Seal, replaces O.E.# 310649
    ( 2 ) 18-2058 Oil seal, replaces O.E.# 313353
    ( 2 ) 18-2060 Oil Seal, replaces O.E.# 321467
    ( 4 ) 18-3722 Locknut, replaces O.E.# 121731
    ( 2 ) 18-4248 Washer, replaces O.E.# 311598
    ( 1 ) 18-7101 O-Ring, replaces O.E.# 305739
    ( 1 ) 18-7102 O-Ring, replaces O.E.# 307450
    ( 1 ) 18-7120 O-Ring, replaces O.E.# 307853, 322598
    ( 1 ) 18-7127 O-Ring, replaces O.E.# 313446br>( 1 ) 18-7130 O-Ring, replaces O.E.# 314728
    ( 1 ) 18-7178 O-Ring, replaces O.E.# 320140
    ( 1 ) 18-7404 O-Ring, replaces O.E.# 909747
    ( 4 ) 18-7475 Quad Ring, replaces O.E.# 332583
    ( 1 ) 18-7168 O-Ring, replaces O.E.# 202893
    ( 2 ) 18-7409 O-Ring, replaces O.E.# 911871
    ( 2 ) 18-2001 Oil Seal, replaces O.E.# 330137
    ( 1 ) 18-7479 O-Ring, replaces O.E.# --
    ( 2 ) 18-3153 S.S. Bolt, replaces O.E.# 908158
  • Your Price: $43.73
    Save: $29.11
    (39% Off $72.84)
    Part # 18-2665 ValueShip™ Eligible
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    Replaces OEM part #
    • OMC 982946
      V6, V8 ( 800 ) Stringer Unit ( 1978-86 )

    • Contains:
      ( 1 ) 18-0110 Shift Housing Gasket, replaces O.E.# 324670
      ( 2 ) 18-3133 Housing Screw, replaces O.E.# 908158
      ( 1 ) 18-0188 Washer, replaces O.E.# 909748
      ( 2 ) 18-2002 Oil Seal, replaces O.E.# 320862
      ( 1 ) 18-2020 Oil Seal, replaces O.E.# 310649
      ( 2 ) 18-2058 Oil Seal,replaces O.E.# 313353
      ( 2 ) 18-2060 Oil Seal, replaces O.E.# 321467
      ( 1 ) 18-2911 Swivel Bearing Housing Gasket, replaces O.E.# 910236
      ( 6 ) 18-3722 Locknut, replaces O.E.# 121731
      ( 2 ) 18-4248 Washer, replaces O.E.# 311598
      ( 1 ) 18-7101 O-Ring, replaces O.E.# 305739
      ( 1 ) 18-7102 O-Ring, replaces O.E.# 307450
      ( 1 ) 18-7120 O-Ring, replaces O.E.# 307853, 322598
      ( 1 ) 18-7130 O-Ring, replaces O.E.# 314728
      ( 1 ) 18-7142 O-Ring, replaces O.E.# 322119
      ( 1 ) 18-7178 O-Ring, replaces O.E.# 320140
      ( 2 ) 18-7403 O-Ring, replaces O.E.# 909316
      ( 1 ) 18-7404 O-Ring, replaces O.E.# 909747
      ( 4 ) 18-7475 Quad Ring, replaces O.E.# 332583
      ( 1 ) 18-7168 O-Ring, replaces O.E.# 202893
      ( 1 ) 18-7479 O-Ring, replaces O.E.# --
      ( 2 ) 18-3153 S.S. Bolt, replaces O.E.# 908152
    Your Price: $29.51
    Save: $12.43
    (29% Off $41.94)
    Part # 18-2671 ValueShip™ Eligible
    SHIPS TODAY!* if ordered in 12 hrs 12 mins.
    Replaces OEM part #
    • OMC 985612
      All 4 Cyl. Cobra ( 1986-89 )


    • Contains:
      ( 1 ) 18-0880 Shift Cover Gasket, replaces O.E.# 911878
      ( 2 ) 18-0166 Grommet, replaces O.E.# 911705
      ( 1 ) 18-0190 Wiper, replaces O.E.# 912157
      ( 2 ) 18-4248 Washer, replaces O.E.# 311598
      ( 1 ) 18-7127 O-Ring, replaces O.E.# 313446
      ( 1 ) 18-7130 O-Ring, replaces O.E.# 314728
      ( 1 ) 18-7137 O-Ring, replaces O.E.# 318372
      ( 3 ) 18-7138 O-Ring, replaces O.E.# 318717
      ( 2 ) 18-7145 O-Ring, replaces O.E.# 333572
      ( 5 ) 18-7475 Quad Ring, replaces O.E.# 332584
      ( 2 ) 18-2001 Oil Seal, replaces O.E.# 330137
    Your Price: $48.11
    Save: $17.93
    (27% Off $66.04)
    Part # 18-2672 ValueShip™ Eligible
    SHIPS TODAY!* if ordered in 12 hrs 12 mins.
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    Replaces OEM part #
    • OMC 985613
    • OMC 984458
    • OMC 439967
      All V6 / V8 Cobra


    • ( 1 ) 18-0880 Shift Cover Gasket, replaces O.E.# 911878
      ( 2 ) 18-0166 Grommet, replaces O.E.# 911705
      ( 1 ) 18-0190 Wiper, replaces O.E.# 912157
      ( 2 ) 18-2002 Oil Seal, replaces O.E.# 320862
      ( 2 ) 18-4248 Washer, replaces O.E.# 311598
      ( 1 ) 18-7130 O-Ring, replaces O.E.# 314728
      ( 1 ) 18-7137 O-Ring, replaces O.E.# 318372
      ( 3 ) 18-7138 O-Ring, replaces O.E.# 318717
      ( 1 ) 18-7142 O-Ring, replaces O.E.# 322119
      ( 2 ) 18-7145 O-Ring, replaces O.E.# 333572
      ( 5 ) 18-7475 Quad Ring, replaces O.E.# 332584
      ( 1 ) 18-0442 Water Passage Gasket, replaces O.E.# 915719
    Your Price: $116.52
    Save: $14.01
    (10% Off $130.53)
    Part # 18-2783 ValueShip™ Eligible
    Hurry! Only 1 left in stock
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    Replaces OEM part #
    • OMC 986629
      King Cobra Lower Unit - 1990
    Volvo / OMC 3850597 replacement parts
    View Larger Photo
    Representative Photo only.
    Your Price: $92.85
    Save: $37.60
    (28% Off $130.45)
    Part # 18-2791 ValueShip™ Eligible
    SHIPS TODAY!* if ordered in 12 hrs 12 mins.
    Hurry! Only 1 left in stock
    No Reviews  |  Write Review  |  Ask Question
    Replaces OEM part #
    • OMC 987251
    • OMC 3850597
    • VOLVO 3850597

    • Fits: OMC 3.0L, 5.0L ( 1994 ), 3.2L ( 1992-93 ), 5.7L ( 1992-94 ), 7.4L ( 1992-95 ) 8.2L ( 1992-93 )
    Sierra
    Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
    Full StarFull StarFull StarFull StarFull StarGreat Kit
    by Alfred from Phoenix, Arizona on April 19, 2016
    All the things we needed to repair the leaky seals were in this kit, even new bolts and washers where needed.
    Was this review helpful?
    Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
    Full StarFull StarFull StarFull StarFull StarSeal kit OMC
    by Keith from Coloma, Michigan on July 21, 2014
    Perfect kit, it would be nice if you would include it with the gear set, just charge more for it.
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    Full StarFull StarFull StarFull StarFull StarGary
    by Gary from Youngville, North Carolina on July 24, 2011
    Very satisfied.
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