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Chrysler Lower Unit Seal Kits

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Model/HP

(6 to 150)
Year

(1970 - Up)

Model/HP

Year

Sierra Gear Housing Seal Kit

Mallory Gear Housing Seal Kit

61978-Up18-2637-1 -
7.51978-Up18-2637-1 -
9.91997 & prior18-2638 -
151997 & prior18-2638 -
9.9199818-2697-1 -
15199818-2697-1 -
201972-197818-2639 -
251972-197818-2639 -
25198918-2636 -
251996-199718-2624 9-74205
25199818-2629 -
351970-197218-2630 -
351972 1/218-2636 -
35197318-2630 -
351974-197518-2636 -
351986-199118-2639 -
35 B1989-199118-2636 -
401992-199418-2636 -
501984-199418-2636 -
551972 1/2-197418-2636 -
55(2)1978-198218-2630 -
55(1)198318-2633 -
60(2)1984 & Prior18-2630 -
60(1)198518-2633 -
65(1)All18-2633 -
701970-197318-2631 -
70197918-2631 -
701991-199518-2635 9-74204
751975-197918-2631 -
751980-198318-2632 -
751996-199818-2635 9-74204
75199918-2626 9-74200
851980-198918-2632 -
85 L Drive198918-2640 -
901974-197718-2631 -
90198318-2632 -
901990-199418-2640 -
901995-199918-2626 9-74200
90 L Drive1990-199118-2640 -
1051970-197618-2631 -
1051979-198318-2632 -
1201990-199418-2640 -
1201995-199918-2626 9-74200
125(3)1983-198918-2632 -
125 D & E(4)198918-2640 -
125 L Drive198918-2640 -
1501989-199418-2640 -

Model/HP

Year

Sierra Gear Housing Seal Kit

Mallory Gear Housing Seal Kit

Notes:
(1) : With one piece lower units
(2) : With two piece lower units
(3) : 1989 A,B,C Models Only
(4) : Chrysler/ Force mid-year model changes are designated with a letter. i.e. 1991A versus 1991B. In order to choose the correct part, you must know which model you have. Older model engines will have a metal placard inside the engine up by the carburator with the model, serial number and year listed. Newer models will have a plastic tag with the information fixed to the clamp bracket on the left side.
Refine Parts List
Model/HP

(6 to 150)
Year

(1970 - Up)
Blowout
Save 11%-35% Off.
Lower Unit Seal Kit - 18-2624 - Sierra
Limited Sale Price: $45.66
Save: $25.42
(35% Off $71.08)
Part # 18-2624 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE 26-85090A2
  • MERCURY/MARINER 28-85090A2
Kit Contains:
    ( 1 ) 18-0579 Oil Seal - replaces O.E.# 26-41131
    ( 1 ) 18-0580 Oil Seal - replaces O.E.# 26-41132
    ( 2 ) 18-0586 Seal - replaces O.E.# 26-99325
    ( 1 ) 18-7419 O-Ring - replaces O.E.# 25-69202
    ( 1 ) 18-2562 Gear Hsg to Face Plate Gasket - replaces O.E.# 27-99326-1
    ( 2 ) 18-2945 Washer - replaces 12-20260
    ( 1 )18-2742 Boot - replaces O.E.# 85552
    ( 2 ) 18-2560 Washer - replaces O.E.# 12-86645
    ( 1 ) 18-7135 O-Ring - replaces O.E.# 25-35276
    ( 2 ) 18-7188 O-Ring - replaces O.E.# 25-805726
    ( 1 ) 18-7956 O-Ring - replaces O.E.# 25-85549
    ( 1 ) 18-7957 O-Ring - replaces O.E.# 25-85594
    ( 1 ) 18-7959 O-Ring - replaces O.E.# 25-99691
    ( 1 ) 18-8348 Slinger - replaces O.E.# 25-86203
Lower Unit Seal Kit - 18-2626 - Sierra
Your Price: $42.75
Save: $22.45
(34% Off $65.20)
Part # 18-2626 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 26-43035A4

  • MERCURY/MARINER 26-43035A4

  • Contains:
    ( 1 ) 18-0522 Oil Seal, replaces O.E.# 26-43036
    ( 1 ) 18-0583 Oil Seal, replaces O.E.# 26-43035
    ( 1 ) 18-2002 Oil Seal, replaces O.E.# 26-76868
    ( 1 ) 18-2053 Oil Seal, replaces O.E.# 26-70081
    ( 1 ) 18-2054 Oil Seal, replaces O.E.# 26-816464
    ( 1 ) 18-2563 Face Plate to Water Pump Cover Gasket, replaces O.E.# 27-43034-1
    ( 1 ) 18-2564 Water Pump Base to Face Plate Gasket, replaces O.E.# 27-43033-1
    ( 1 ) 18-2565 Water Pump Base to Gear Housing Gasket, replaces O.E.# 27-817277
    ( 1 ) 18-2566 Face Plate to Water Pump Cover Gasket, replaces O.E.# 27-817277
    ( 3 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-4261 Washer, replaces O.E.# 19643
    ( 1 ) 18-7188 O-Ring, replaces O.E.# 25-805726
    ( 1 ) 18-7198 O-Ring, replaces O.E.# 25-45710
Lower Unit Seal Kit - 18-2629 - Sierra
Limited Sale Price: $57.74
Save: $28.43
(32% Off $86.17)
Part # 18-2629 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE 26-85090A1

  • MERCURY/MARINER 25-85090A1

  • Contains:
    ( 2 ) 18-2006 Seal, replaces O.E.# 25-33467
    ( 2 ) 18-2560 Washer, replaces O.E.# 12-86645
    ( 1 ) 18-2562 Gear Housing to Face Plate Gasket, replaces O.E.# 27-99326-1
    ( 1 ) 18-2742 Boot, replaces O.E.# 85552
    ( 2 ) 18-2945 Washer, replaces O.E.# 12-20260
    ( 1 ) 18-7135 O-Ring, replaces O.E.# 25-35276
    ( 1 ) 18-7419 O-Ring, replaces O.E.# 25-69202
    ( 1 ) 18-7956 O-Ring, replaces O.E.# 25-85549
    ( 1 ) 18-7957 O-Ring, replaces O.E.# 25-85594
    ( 1 ) 18-8348 Slinger, replaces O.E.# 25-86203
Lower Unit Seal Kit - 18-2630 - Sierra
Limited Sale Price: $22.83
Save: $5.66
(19% Off $28.49)
Part # 18-2630 ValueShip™ Eligible
Hurry! Only 1 left in stock
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Replaces OEM part #
  • CHRYSLER FORCE FK1060
Lower Unit Seal Kit - 18-2631 - Sierra
Limited Sale Price: $36.60
Save: $18.79
(33% Off $55.39)
Part # 18-2631 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE FK1061
Lower Unit Seal Kit - 18-2632 - Sierra
Limited Sale Price: $46.34
Save: $22.36
(32% Off $68.70)
Part # 18-2632 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE FK1063-2

  • Contains:
    ( 3 ) 18-2244 Washer, replaces O.E.# 10-79953A2
    ( 1 ) 18-7127 O-Ring, replaces O.E.# 25-F84305
    ( 1 ) 18-0500 Seal, replaces O.E.# 26-817472
    ( 1 ) 18-0512 Seal, replaces O.E.# 26-F84307-1
    ( 1 ) 18-7169 O-Ring, replaces O.E.# 25-F24278
    ( 1 ) 18-7176 O-Ring, replaces O.E.# 25-90011
    ( 1 ) 18-7467 O-Ring, replaces O.E.# 25-54030
    ( 1 ) 18-7141 O-Ring, replaces O.E.# 802047
Lower Unit Seal Kit - 18-2633 - Sierra
Limited Sale Price: $49.76
Save: $6.23
(11% Off $55.99)
Part # 18-2633 ValueShip™ Eligible
Hurry! Only 1 left in stock
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Replaces OEM part #
  • CHRYSLER FORCE FK1127
Lower Unit Seal Kit - 18-2635 - Sierra
Limited Sale Price: $35.63
Save: $15.72
(30% Off $51.35)
Part # 18-2635 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 26-814669A2

  • MERCURY MARINER

  • Contains:
    ( 1 ) 18-0500 Seal, replaces O.E.# 26-81742
    ( 1 ) 18-0622 Gasket, Lower Wear Plate, replaces O.E.# 27-19701
    ( 1 ) 18-2051 Seal, replaces O.E.# 26-69188
    ( 1 ) 18-2052 Seal, replaces O.E.# 26-69189
    ( 3 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 2 ) 18-7168 O-Ring, replaces O.E.# 25-48171
    ( 1 ) 18-7173 O-Ring, replaces O.E.# 25-30224
    ( 1 ) 18-7950 O-Ring, replaces O.E.# 25-45258
Lower Unit Seal Kit - 18-2636 - Sierra
Limited Sale Price: $12.15
Save: $5.73
(32% Off $17.88)
Part # 18-2636 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 26-820645A1

  • Contains:
    ( 1 ) 18-0500 Seal, replaces O.E.# 26-817472
    ( 1 ) 18-0502 Seal, replaces O.E.# 26-819396
    ( 1 ) 18-0503 Seal, replaces O.E.# 26-F40307-2
    ( 2 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-7116 O-Ring, replaces O.E.# 25-62704
    ( 1 ) 18-7134 O-Ring, replaces O.E.# 25-F40342
    ( 1 ) 18-7141 O-Ring, replaces O.E.# 25-25007
    ( 1 ) 18-7952 O-Ring, replaces O.E.# 25-88657
Lower Unit Seal Kit - 18-2637-1 - Sierra
Limited Sale Price: $37.58
Save: $6.10
(13% Off $43.68)
Part # 18-2637-1 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE FK1062

  • Contains:
    ( 1 ) 18-0500 Seal, replaces O.E.# 26-817472
    ( 1 ) 18-0592 Seal, replaces O.E.# 26-F318307
    ( 2 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-7149 O-Ring, replaces O.E.# 25-525555
    ( 1 ) 18-7171 O-Ring, replaces O.E.# 25-F525305
    ( 1 ) 18-7191 O-Ring, replaces O.E.# 25-F474342
Lower Unit Seal Kit - 18-2638 - Sierra
Limited Sale Price: $26.95
Save: $14.32
(34% Off $41.27)
Part # 18-2638 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE FK1065

  • Contains:
    ( 1 ) 18-0500 Seal, replaces O.E.# 26-817472
    ( 1 ) 18-0584 Seal, replaces O.E.# 26-66022,26-F3461
    ( 2 ) 18-0593 Seal, replaces O.E.# 26-F901307-2
    ( 1 ) 18-0623 Gasket, Lower Unit, replaces O.E.# 27-F286555
    ( 3 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-7138 O-Ring, replaces O.E.# 25-F455305
Lower Unit Seal Kit - 18-2639 - Sierra
Limited Sale Price: $32.38
Save: $17.05
(34% Off $49.43)
Part # 18-2639 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE FK1068

  • Contains:
    ( 1 ) 18-0584 Seal, replaces O.E.# 26-66022
    ( 2 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-7134 O-Ring, replaces O.E.# 25-F498618
    ( 1 ) 18-7141 O-Ring, replaces O.E.# 25-25007
    ( 1 ) 18-7176 O-Ring, replaces O.E.# 25-90011
Lower Unit Seal Kit - 18-2640 - Sierra
Limited Sale Price: $54.79
Save: $23.80
(30% Off $78.59)
Part # 18-2640 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE FK1203-1

  • Contains:>
    ( 1 ) 18-0500 Seal, replaces O.E.# 26-817472
    ( 1 ) 18-2014 Seal, replaces O.E.# 26-F694305
    ( 1 ) 18-2076 Seal, replaces O.E.# 26-12224
    ( 1 ) 18-2077 Seal, replaces O.E.# 26-14077
    ( 3 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-7426 Grommet, replaces O.E.# 25-30271
    ( 1 ) 18-7127 O-Ring, replaces O.E.# 25-F84305
    ( 1 ) 18-7134 O-Ring, replaces O.E.# 25-F498618
    ( 1 ) 18-7169 O-Ring, replaces O.E.# 25-F24278
    ( 1 ) 18-7176 O-Ring, replaces O.E.# 25-F74305
    ( 4 ) 18-7413 O-Ring, replaces O.E.# 25-62702
Lower Unit Seal Kit - 18-2697-1 - Sierra
Limited Sale Price: $31.87
Save: $16.33
(33% Off $48.20)
Part # 18-2697-1 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER FORCE 26-41365A3
  • MERCURY MARINE 26-41365A3

  • Contains:
    ( 2 ) 18-2581 Oil Seal, replaces O.E.# 26-41365
    ( 1 ) 18-0854 Oil Seal, replaces O.E.# 26-66022
    ( 1 ) 18-0585 Oil Seal, replaces O.E.# 26-821928
    ( 1 ) 18-0586 Oil Seal, replaces O.E.# 26-99325
    ( 1 ) 18-2728-1 Water Tube Seal, replaces O.E.# 26-42102-1
    ( 2 ) 18-2945 Washer, replaces O.E.# 12-19183
    ( 1 ) 18-3149-1 Water Pump Base, replaces O.E.# 46-42040A5
    ( 1 ) 18-4261 Washer, replaces O.E.# 19643
    ( 1 ) 18-7162 O-Ring, replaces O.E.# 25-33145
Sierra
Average Customer Review for Lower Unit Seal Kit - 18-2626 - Sierra
Full StarFull StarFull StarFull StarHalf Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarEmpty StarGreat Product
by Jon from Fair Oaks, California on May 07, 2014
Great kit if you need to replace the seals and gaskets for your lower unit.
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarRight Parts!
by William from Ogden, Utah on July 17, 2012
Call center "Adam" @ Ext:106 did a great job finding the right parts I needed to have the mechanic rebuild the lower end seals. Motor is not easy to find parts for except thru IBoats.
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Full StarFull StarFull StarFull StarFull Starlower unit seal kit
by Malcolm from Covington, Georgia on June 22, 2012
the kit works perfect ,a three hour workout , no problems , thanks, malcolm covington, ga.
(1 of 1 people found this review helpful)
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Average Customer Review for Lower Unit Seal Kit - 18-2631 - Sierra
Full StarFull StarFull StarFull StarEmpty Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarEmpty StarEmpty Starseals
by Willie from Moweaqua, Illinois on June 12, 2012
there was only 2 seals that fit my motor,May have order the wrong one.shipped fast very pleased with that.
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Full StarFull StarFull StarFull StarFull Starseal kit
by Jeff from McCool Junction, Nebraska on December 24, 2011
very good
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarReview for Lower Unit Seal Kit for Chrysler/Force Outboard FK1061 - Sierra
by a Customer on February 03, 2009
Shipped really fast.
(1 of 2 people found this review helpful)
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Average Customer Review for Lower Unit Seal Kit - 18-2635 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGreat Service
by Cory from Lakewood, California on January 27, 2011
Found what I needed, ordered it and received it in four days. Awesome service. Can't wait to use these parts.
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Full StarFull StarFull StarFull StarFull StarReview for Lower Unit Seal Kit for Mercury/Mariner 26-814669A2, Chrysler/Force Outboard 26
by a Customer on October 02, 2008
Just perfect to get my boat back on the water. I was amazed how past I got it.
(0 of 1 people found this review helpful)
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Average Customer Review for Lower Unit Seal Kit - 18-2636 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarGot the parts fast!!
by Richard from Casa Grande, Arizona on November 05, 2010
Great service. Parts came a day ahead of estimated delivery. Ordered on Monday and got boat back on the water by the weekend. Happy Fishing Ya'll!!!
(0 of 2 people found this review helpful)
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Q:
Will this fit my 2002 "L" 120hp drive lower unit?
A:
This goes to a Force 120 1995-1999. We don't pull up any records of the Force 120 after 1999. You will need to contact Mercury.
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