Force Head Gaskets

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HP:
Model/Year:

HP

Model/Year

Serial #

Sierra Head Gasket

Mallory Head Gasket

9.9 1984-1992,A,B (1)N/A 18-3851 9-63807
9.9 1992-1998 E000001 & UP 18-3851 9-63807
15 1984-1992,A,B (1)N/A 18-3851 9-63807
15 1992-1998 E000001 & UP 18-3851 9-63807
25 1996-1998 E127700 & UP 18-3859 -
25 1989A,B (1)N/A 18-3852 9-63803
35 1986-1991,A,B,C (1)N/A 18-3852 9-63803
40 1992C (1)E000001 & UP 18-3853 9-63805
40 1992-1999 E000001 & UP 18-3853 9-63805
50 1990A (1)N/A 18-3853 9-63805
50 1989-1992,B,C.D,Z (1)N/A 18-3853 9-63805
50 1984-1987,A (1)N/A 18-3856 9-63802
50 1988-1989,A (1)N/A 18-3854 9-63804
50 1987-1988,B,C,D (1)N/A 18-3854 9-63804
70 1991-1992,B,C (1)N/A 18-3855 9-63800
70 1992-1995 E000001 & UP 18-3855 9-63800
75 1996-1999 E138600 & UP 18-3855 9-63800
85 1984-1989,A,L (1)N/A 18-3855 9-63800
85 1986-1989,B,C, (1)N/A 18-3855 9-63800
85 1986,M,N (1)N/A 18-3855 9-63800
85 1985 L-DRIVE A,B,C (1)N/A 18-3855 9-63800
85 1989,D,E,F,G,H (1)N/A 18-3855 9-63800
90 1990-1991,A,B,D (1)N/A 18-3855 9-63800
90 1990-1992,C,E (1)N/A 18-3855 9-63800
90 1991-1999 E000001 & UP 18-3855 9-63800
90 1990-1991 L-DRIVE,A,B,C,D (1)N/A 18-3855 9-63800
90 1993-1995 SPORT JET E023150-E138599 18-3855 9-63800
95 1996-1997 SPORT JET XR E141089 & UP 18-3855 9-63800
120 1990-1992,A,C (1)N/A 18-3857 9-63801
120 1990-1999 E000001 & UP 18-3857 9-63801
120 1990-1992,A,B,C,D L-DRIVE (1)N/A 18-3857 9-63801
120 1995-1999 SPORT JET,XR,XR2 N/A 18-3857 9-63801
125 1983-1989, A (1)N/A 18-3857 9-63801
125 1986-1989, B (1)N/A 18-3857 9-63801
125 1988-1989, C (1)N/A 18-3857 9-63801
125 1989, D, E (1)N/A 18-3857 9-63801
150 1989-1992 A-C (1)-18-3858 9-63806
150 1989-1994 E000001-E093699 18-3858 9-63806

HP

Model/Year

Serial #

Sierra Head Gasket

Mallory Head Gasket

Notes:
  • (1) : 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
HP:
Model/Year:
Your Price: $12.99
Save: $1.92
(12% Off $14.91)
Part # 18-3851 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 27-F286529-3

  • For: 9.9 and 15 HP
Your Price: $28.99
Save: $8.28
(22% Off $37.27)
Part # 18-3852 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 27-513529

  • For: 25 and 35 HP
Your Price: $24.99
Save: $5.55
(18% Off $30.54)
Part # 18-3853 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 27-F691529-1

  • For: 45 and 50 HP
Your Price: $26.99
Save: $5.93
(18% Off $32.92)
Part # 18-3854 ValueShip™ Eligible
Hurry! Only 1 left in stock
Replaces OEM part #
  • CHRYSLER FORCE 27-F658529

  • For: 50 HP
Your Price: $33.99
Save: $6.88
(16% Off $40.87)
Part # 18-3855 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 27-820438

  • For: 70, 75, 85, and 90 HP
Your Price: $36.99
Save: $9.51
(20% Off $46.50)
Part # 18-3856 ValueShip™ Eligible
Hurry! Only 1 left in stock
Replaces OEM part #
  • CHRYSLER FORCE 27-F201529-1

  • For: 1984 - 1987 "A" models 50 HP
Your Price: $37.99
Save: $9.00
(19% Off $46.99)
Part # 18-3857 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 27-824615
  • CHRYSLER FORCE 27-824615-2
  • CHRYSLER FORCE 27-F476529-4
  • CHRYSLER FORCE F476529
  • CHRYSLER FORCE F476529-1
  • CHRYSLER FORCE F476529-2

  • For: 100 thru 140 HP.
Your Price: $72.99 Discontinued
Save: $13.50
(15% Off $86.49)
Part # 18-3858 ValueShip™ Eligible
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • CHRYSLER FORCE 27-F694529-1

  • For: 150 HP.
Your Price: $28.99
Save: $7.35
(20% Off $36.34)
Part # 18-3859 ValueShip™ Eligible
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • CHRYSLER FORCE 27-819138-2

  • For: 25 HP ( E127700 - E344999 )
Mallory Gasket, Cylinder Head 9-63804
Your Price: $16.99 Discontinued
Save: $11.77
(40% Off $28.76)
Part # 9-63804 ValueShip™ Eligible
No Reviews  |  Write Review  |  Ask Question
Replaces Original Equipment Manufacturer(OEM):Chrysler / Force
Replaces Original Equipment Manufacturer # (OEM #):27-F658529
Fits Application:50 hp
Mercury 135 / 150 Hp 2.0L Head Gasket
Your Price: $14.21
Save: $2.41
(14% Off $16.62)
Part # 505-38
No Reviews  |  Write Review  |  Ask Question
    Mercury:
  • 27-18785-1
Chrysler/Force 50 Hp 2 Cylinder Head Gasket
Your Price: $18.09
Save: $3.05
(14% Off $21.14)
Part # 505-72
No Reviews  |  Write Review  |  Ask Question
    Chrysler/Force:
  • 27-F691529-1
Chrysler/Force 40-55 Hp 2 Cylinder Head Gasket
Your Price: $13.93
Save: $2.35
(14% Off $16.28)
Part # 505-70
No Reviews  |  Write Review  |  Ask Question
    Chrysler/Force:
  • 27-F658529
Chrysler/Force 70 / 75 / 85-95 Hp 3 Cylinder Head Gasket
Your Price: $22.79
Save: $3.85
(14% Off $26.64)
Part # 505-75
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
    Chrysler/Force:
  • 27-820438
Chrysler/Force 100-120 Hp 4 Cylinder Head Gasket
Your Price: $27.43
Save: $4.63
(14% Off $32.06)
Part # 505-80
No Reviews  |  Write Review  |  Ask Question
    Chrysler/Force:
  • 27-824615-2
Sierra
Average Customer Review for Head Gasket - 18-3851 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarBecause I have a Chrysler....
by Justin from Sanford, Florida on October 14, 2015
Was delivered fast and it was the exact fit for a no longer made gasket! Thanks iboats!
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Full StarFull StarFull StarFull StarFull StarFit like a charm
by Kim from Wyoming, Michigan on August 15, 2013
This gasket fit perfectly on my 1989 Gamefisher 15 hp.She runs like a TOP again.Its made in Taiwan,its black,not pink like the original gasket,but who cares? It serves its purpose and the price was right.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Starthis product worked 1970 9.6 hp Wards sea king
by Jerry from Clute, Texas on August 30, 2011
this product worked 1970 9.6 hp Wards sea king. 40 year old moter and still runnin hard.
(2 of 3 people found this review helpful)
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Average Customer Review for Head Gasket - 18-3852 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarGasket
by Randy from Edgar, Wisconsin on August 16, 2013
good product and price
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Average Customer Review for Head Gasket - 18-3853 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarWorks great
by Gregory from Stowe, Vermont on June 24, 2015
I now have 150lbs of compression in both cylinders. The head gasket was a perfect fit and brings my 20 year old engine back up to factory specs.
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Full StarFull StarFull StarFull StarFull StarHead gasket
by Tommy from Meridian, Mississippi on May 21, 2013
The part was the right one safely packaged and quickly at a good price
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Average Customer Review for Head Gasket - 18-3854 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarReview for Head Gasket for Chrysler/Force Outboard 27-F658529 - Sierra
by a Customer on July 15, 2009
(0 of 3 people found this review helpful)
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Average Customer Review for Head Gasket - 18-3855 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGood
by Noel from Lubec, Maine on September 28, 2014
It done the job ,what can you say about a head gasket ? I am happy !
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Full StarFull StarFull StarFull StarFull Stargood service
by Rhett from Mims, Florida on March 25, 2013
fast service and quality product
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarExcellent service
by Chris from Colliers, West Virginia on September 07, 2012
Good quality parts. Great prices. Fast shipping. Will return for more purchases and reccomend to everyone
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Average Customer Review for Head Gasket - 18-3856 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarEXACTLY
by James from Wallkill, New York on May 31, 2011
this part fit exactly as needed. Fast shipping.
(0 of 1 people found this review helpful)
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Average Customer Review for Head Gasket - 18-3857 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarJet boat head gasket
by Andrew from Deerfield Beach, Florida on January 10, 2015
I am very pleased with the product.
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Full StarFull StarFull StarFull StarFull Starpowerhead gasket set force 125
by Danny from Pueblo West, Colorado on July 14, 2014
every gasket needed to rebuild a force 125 powerhead includes the upper and lower crankshaft seals.
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Full StarFull StarFull StarFull StarFull Starparts fit
by David from Waverly,, New York on September 06, 2011
excellent support
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