Mercury Head Gaskets

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Model/ HP

(4 to 250)

Model/ HP

Cyl.

Beg. S/N

End. S/N

Sierra Head Gasket

Mallory Head Gasket

4 HP (4 stroke)1OR000001& UP18-3844 -
5 HP (4 stroke)1OR000001& UP18-3844 -
6 HP (4 stroke)1OR000001& UP18-3844 -
25 HP (4 stroke)2OG760300& UP18-3846-
40 HP (4 stroke)4OG760300& UP18-3845 -
45 HP (4 stroke)4OG760300& UP18-3845 -
50 HP (4 stroke)4OG760300& UP18-3845 -
105 JET6D082000& UP18-3864 9-63854
V-135V-6A904646C23955218-3863 9-63855
V-135V-6C239553G96049918-3861 9-63851
140 JETV-6D082000G96049918-3864 9-63854
V-150V-66042946C23955218-3863 9-63855
V-150V-6C239553G96049918-3861 9-63851
V-150 XR4 MAGIIIV-6B242885C23955218-3862 9-63853
V-150 XR4V-6C239553D08199918-3871 9-63856
V-150 EFI XR6MAGIIIV-6D082000G96049918-3864 9-63854
150 MARV-66038681C23955318-3863 9-63855
150 MARV-6C239554& UP18-3861 9-63851
V-175V-66618751C23955218-3862 9-63853
V-175V-6C239553D08199918-3871 9-63856
V-175V-6D082000G96049918-3864 9-63854
V-175 XRI EFIV-6D000750D08199918-3871 9-63856
V-175 XRI EFIV-6D000750D08199918-3864 9-63854
V-175 XRI EFIV-6D082000G30304518-3864 9-63854
V-200,200,2000V-64839034607319118-3872 9-63852
V-200V-66073192620399018-3872 9-63852
V-200 (EFI)V-6OC100861OC29151918-3862 9-63853
V-200 (EFI)V-6OC291520OG96049918-3862 9-63853
V-200 (2.4L)V-66203991C29151918-3862 9-63853
V-200 (2.5L)V-6C291520& UP18-3864 9-63854
V-200 XRI EFIV-6C100861C29151918-3862 9-63853
V-200 XRI EFIV-6C291520& UP18-3864(2) 9-63854
V-220V-6B117316& UP18-3862 9-63853
V-225V-65628028D28081218-3872 9-63852
V-225V-6OD280813& UP18-7400-
V-225 SEA PROV-6OG245605OT40899918-7400-
V-225 EFI (3.0L)V-6OG129222OG76029918-7400-
V-250 EFI (3.0L)V-6OG129222OT40899918-7400-

Model/ HP

Cyl.

Beg. S/N

End. S/N

Sierra Head Gasket

Mallory Head Gasket

Notes:
(2) : 2 head gaskets required
Refine Parts List
Model/ HP

(4 to 250)
Blowout
Save 12%-35% Off.
Head Gasket - Sierra
Your Price: $29.99
Save: $5.50
(15% Off $35.49)
Part # 18-3804
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Replaces OEM part #
  • MERCURY MARINE 27-84733M
  • MERCURY MARINE 27-19138M
  • MERCURY MARINE 27-19138
  • YAMAHA 689-W0001-A1-00
  • YAMAHA 689-11181-02-00
    For: Mercury/Mariner Model 30A; S/N Code 689
Head Gasket - Sierra
Your Price: $29.99
Save: $6.85
(18% Off $36.84)
Part # 18-3827
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Replaces OEM part #
  • MERCURY MARINE 27-8254821
  • YAMAHA 6G8-11181-A1-00
  • YAMAHA 6G8-11181-00-00

  • For: Mercury/Mariner 8, 9.9 HP 4-Stroke
Head Gasket - Sierra
Your Price: $14.99
Save: $2.55
(14% Off $17.54)
Part # 18-3828
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Replaces OEM part #
  • MERCURY MARINE 27-98990M
  • MERCURY MARINE 27-83899M
  • MERCURY MARINE 27-18937M
  • MERCURY MARINE 27-18937
  • YAMAHA 6E7-11181-A1-00
  • YAMAHA 6E7-11181-00-00
    For: Mercury/Mariner Model 9.9C;S/N Code 682 & Model 15C, S/N Code 684
Head Gasket - Sierra
Your Price: $20.99
Part # 18-3844
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Replaces OEM part #
  • MERCURY MARINE 27-803508

  • For: Mercury/Mariner 4-Stroke O/B's, 4/5/6 HP S/N OR000001 & up
Head Gasket - Sierra
Your Price: $69.99
Part # 18-3845
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Replaces OEM part #
  • MERCURY MARINE 27-825032

  • For: Mercury/Mariner 4-Strokes O/B's, 40/45/50 HP S/N OG760300 & up
Head Gasket - Sierra
Your Price: $29.99
Save: $5.37
(15% Off $35.36)
Part # 18-3861
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Replaces OEM part #
  • MERCURY MARINE 27-18785-1

  • For: Mercury/Mariner Model 135,150,and XR4
Head Gasket - Sierra
Your Price: $24.99
Save: $4.63
(15% Off $29.62)
Part # 18-3862
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Replaces OEM part #
  • MERCURY MARINE 27-41246-1

  • For: Mercury/Mariner Model 175, 200, XR4
Head Gasket - Sierra
Your Price: $24.99
Save: $4.33
(14% Off $29.32)
Part # 18-3863
Replaces OEM part #
  • MERCURY MARINE 27-96542-1

  • For Mercury/Mariner Model 150
Head Gasket for Mercury/Mariner 27-822844-1, GLM 35870 - Sierra
Your Price: $30.99
Save: $6.64
(17% Off $37.63)
Part # 18-3864
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Replaces OEM part #
  • MERCURY MARINE 27-822844-1

  • For: Mercury/Mariner Model 175, 200 and XR6
Head Gasket - Sierra
Your Price: $34.99
Save: $6.43
(15% Off $41.42)
Part # 18-3871
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Replaces OEM part #
  • MERCURY MARINE 27-18786-1

  • For: Mercury/Mariner Model 175, XR4, Mag 11
Head Gasket for Mercury/Mariner 27-41245-1, GLM 35900 - Sierra
Your Price: $38.99
Save: $7.42
(15% Off $46.41)
Part # 18-3872
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Replaces OEM part #
  • MERCURY MARINE 27-41245-1

  • For:Mercury/Mariner 200 and 225 HP
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Replaces OEM part #
  • MERCURY MARINE 27-78410
Exhaust Cover Gasket 80 HP - Sierra
Your Price: $12.99
Part # 18-2500-9
Replaces OEM part #
  • MERCURY MARINE 27-85493
Pkg. of 2
Block Cover Gasket 3 Cylinder - Sierra
Your Price: $9.99
Save: $2.06
(17% Off $12.05)
Part # 18-2504-9
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Replaces OEM part #
  • MERCURY MARINE 27-88449
  • Pkg. of 2
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Replaces OEM part #
  • MERCURY MARINE 27-96171-1
  • Pkg. of 2
Cylinder Block Gasket 40-50 HP - Sierra
Your Price: $8.99
Save: $2.59
(22% Off $11.58)
Part # 18-2507-9
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Replaces OEM part #
  • MERCURY MARINE 27-85487
  • PKG. of 2
Cylinder Block Head Gasket for Mercury/Mariner 27-43005-7, GLM 37660 - Sierra
Your Price: $11.99
Save: $1.99
(14% Off $13.98)
Part # 18-2740
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Replaces OEM part #
  • MERCURY MARINE 27-43005-7
  • For: 65 Jet, 75 HP 3 cyl, 90 HP 3 cyl.
Block Cover Gasket 35-40 HP - Sierra
Your Price: $7.99
Save: $1.33
(14% Off $9.32)
Part # 18-2805-9
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Replaces OEM part #
  • MERCURY MARINE 27-85490-2
  • Pkg. of 2
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Replaces OEM part #
  • MERCURY MARINE 27-65788
  • Pkg. of 2
Block Cover Gasket 90-115 HP for Mercury/Mariner 27-98185-3, GLM 32320 - Sierra
Your Price: $19.99
Save: $4.03
(16% Off $24.02)
Part # 18-2807-9
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Replaces OEM part #
  • MERCURY MARINE 27-98185-3
Pkg. of 2
Cylinder Cover Gasket V6 - Sierra
Your Price: $7.99
Save: $1.88
(19% Off $9.87)
Part # 18-2808-9
Replaces OEM part #
  • MERCURY MARINE 27-96278
  • Pkg. of 2
50-60 HP Block Cover Gasket - Sierra
Your Price: $14.99
Save: $3.40
(18% Off $18.39)
Part # 18-2809-9
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Replaces OEM part #
  • MERCURY MARINE 27-43779-2
  • Pkg. of 2
Block Cover Gasket 45-50 HP - Sierra
Your Price: $16.99
Save: $4.57
(21% Off $21.56)
Part # 18-2810-9
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Replaces OEM part #
  • MERCURY MARINE 27-43777-2
  • Pkg. of 2
Block Cover Gasket - Sierra
Your Price: $4.99
Save: $2.99
(37% Off $7.98)
Part # 18-2837-9
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Replaces OEM part #
  • MERCURY MARINE 27-41382
Pkg. of 2
Cylinder Block Head Gasket for Mercury/Mariner 27-44328-4, GLM 37670 - Sierra
Your Price: $15.99
Save: $2.56
(13% Off $18.55)
Part # 18-2943
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Replaces OEM part #
  • MERCURY MARINE 27-44328-4
    For: 81 Jet, 100 HP, 115 HP, and 125 HP 4 cyl. outboards
Mallory Gasket, Cylinder head 9-63964
Mallory Gasket, Cylinder head 9-63964
Spring Sale Price: $26.99
Save: $9.85
(26% Off $36.84)
Part # 9-63964
Hurry! Only 1 left in stock
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Replaces GLM #:34910
Replaces Original Equipment Manufacturer(OEM):Yamaha
Replaces Original Equipment Manufacturer # (OEM #):6G8-11181-A1
Fits Application:9.9 4-stroke
Mallory Gasket, Cylinder head 9-63962
Mallory Gasket, Cylinder head 9-63962
Spring Sale Price: $13.49
Save: $4.05
(23% Off $17.54)
Part # 9-63962
Hurry! Only 1 left in stock
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Replaces GLM #:33890
Replaces Original Equipment Manufacturer(OEM):Yamaha
Replaces Original Equipment Manufacturer # (OEM #):6E7-11181-A1
Fits Application:9.9/15 88-93
Mallory Gasket, Cylinder head 9-63960
Mallory Gasket, Cylinder head 9-63960
Spring Sale Price: $26.99
Save: $8.50
(23% Off $35.49)
Part # 9-63960
Hurry! Only 1 left in stock
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Replaces GLM #:33880
Replaces Original Equipment Manufacturer(OEM):Yamaha
Replaces Original Equipment Manufacturer # (OEM #):689-11181-A1
Fits Application:25 84-87, 30 84-86, C30 89-92
Mallory Gasket, Cylinder Head 9-63856
Mallory Gasket, Cylinder Head 9-63856
Spring Sale Price: $31.49
Save: $9.93
(23% Off $41.42)
Part # 9-63856
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Replaces GLM #:35890
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-18786-1
Fits Application:175, XR4, MAG II
Mallory Gasket, Cylinder Head 9-63855
Mallory Gasket, Cylinder Head 9-63855
Spring Sale Price: $22.49
Save: $6.83
(23% Off $29.32)
Part # 9-63855
Hurry! Only 1 left in stock
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Replaces GLM #:35880
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-96542-1
Fits Application:150
Mallory Gasket, Cylinder Head 9-63854
Mallory Gasket, Cylinder Head 9-63854
Spring Sale Price: $27.89
Save: $9.74
(25% Off $37.63)
Part # 9-63854
Hurry! Only 1 left in stock
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Replaces GLM #:35870
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-822844-1
Fits Application:175, 20, XR6
Mallory Gasket, Cylinder Head 9-63853
Mallory Gasket, Cylinder Head 9-63853
Spring Sale Price: $22.49 (Out of stock)
Save: $7.13
(24% Off $29.62)
Part # 9-63853
Replaces GLM #:35860
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-41246-1
Fits Application:175, 200, XR4
Mallory Gasket, Cylinder Head 9-63852
Mallory Gasket, Cylinder Head 9-63852
Spring Sale Price: $35.09 (Out of stock)
Save: $11.32
(24% Off $46.41)
Part # 9-63852
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Replaces GLM #:35900
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-41245-1
Fits Application:200, 225
Mallory Gasket, Cylinder Head 9-63851
Mallory Gasket, Cylinder Head 9-63851
Spring Sale Price: $26.99
Save: $8.37
(23% Off $35.36)
Part # 9-63851
Hurry! Only 1 left in stock
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Replaces GLM #:35850
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-18785-1
Fits Application:135, 150, XR4
Mallory Gasket, Block Cover 9-60047
Mallory Gasket, Block Cover 9-60047
Spring Sale Price: $8.99
Save: $3.01
(25% Off $12.00)
Part # 9-60047
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-98185-3
Fits Application:90-115 inline 6 cyl
Mallory O-Ring, Cylinder Head 9-63850
Mallory O-Ring, Cylinder Head 9-63850
Spring Sale Price: $3.59
Save: $0.52
(12% Off $4.11)
Part # 9-63850
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):25-818573
Fits Application:200-300 EFI, DFI, & Carb
 
Mallory Gasket, Cylinder Head 9-60916
Spring Sale Price: $15.87 (Out of stock)
Save: $4.70
(22% Off $20.57)
Part # 9-60916
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Mallory Cylinder Head Cover Gasket 9-60917
Spring Sale Price: $2.12 (Out of stock)
Save: $1.17
(35% Off $3.29)
Part # 9-60917
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Sierra
Average Customer Review for Head Gasket - Sierra
Based On 1 Review
Head gasket by Richard - new Haven, IllinoisJune 09, 2011
Havent used these yet.. But look like good quality
(0 of 1 people found this review helpful)
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Average Customer Review for Exhaust Cover Gasket 80 HP - Sierra
Based On 1 Review
Fast delivery by Gary - Memphis, IndianaMay 30, 2011
Fast delivery and very well packaged. I was concerned the gasket would be bent or broken during delivery but it was shipped with a cardboard backer inside a box. The gasket worked great.
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Average Customer Review for Cylinder Cover Gasket V6 - Sierra
Based On 1 Review
Water jacket Gaskets by Richard - new Haven, IllinoisJune 09, 2011
havent used these yet.. But they look like good quality and there are 2 in a package.. I thought there was 1.. .. Good buy
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Average Customer Review for Mallory Gasket, Cylinder Head 9-63853
Based On 1 Review
great sevice by Scott - North Adams, MassachusettsJuly 05, 2011
I called your company spoke to a rep she was very nice and very informed.I received the gaskets when they said i would fixed the boat and a fishing we went.I would use your company again and again and all ready recomended it to my friends and they ordered parts and were just as happy as me . thank you scott m.
(1 of 1 people found this review helpful)
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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!