MERCURY/MARINER
Gasket Sets
18-3828
HEAD GASKET
18-3804
18-2736
Replaces: 27-18937M,
18-3861
HEAD GASKET
HEAD GASKET
27-18937, 27-98990M,
HEAD GASKET
Replaces: 27-19138M, 19138,
Replaces:
27-83899M
Replaces: 27-18785-1
27-84733M
Mercruiser 27-86389 5
For: Model 9.9C; S/N Code 682 &
For: Model 135, 150 and XR4
For: Model 30A; S/N Code 689
For: 15-25HP 2 cyl
Model 15C, S/N Code 684
18-3862
18-3863
18-3864
HEAD GASKET
HEAD GASKET
HEAD GASKET
Replaces: 27-41246-1
Replaces: 27-96542-1
Replaces: 27-822844-1
For: Model 175, 200, XR4
For: Model 150
For: Model 175, 200 and XR6
18-3871
18-3844
18-3872
HEAD GASKET
HEAD GASKET
HEAD GASKET
Replaces: 27-18786-1
Replaces: 27-803508
Replaces: 27-41245-1
For: Model 175, XR4, Mag II
For: 4-Stroke O/B's, 4/5/6 HP S/N OR000001 & Up
For: 200 and 225 HP
18-3845
18-7400
18-3827
HEAD GASKET
O-RING HEAD GASKET
HEAD GASKET
Replaces: 27-825032
Replaces: 25-818573
Replaces: 27-8254821
For:4-StrokeO/B's,40/45/50HP S/NOG760300 & Up
1 per cylinder, 3 per cylinder head
For: 8, 9.9 HP 4-Stroke
HEAD GASKET/GASKET SET APPLICATION
Head
Gasket
Head
Gasket
Model
Cyl.
Beg. S/N
End. S/N
Gasket
Set
Model
Cyl.
Beg. S/N
End. S/N
Gasket
Set
4/5/6 HP
40/45/50 HP
(4 stroke)
1
OR000001
& UP
18-3844
--
(4 stroke)
4
OG760300
& UP
18-3845
--
15 (Super 15)
2
OB238464
& UP
N/A
18-4334
45
4
5531630
0B110788
N/A
18-4353
18 (18XD)
2
6416713
6443972
N/A
18-4334
45
4
0B110789
& UP
--
18-4325
20 (20,20XD, 200)
2
6443973
OT800999
N/A
18-4334
45 Jet
3
OD000750
& UP
N/A
18-4337
20 JET
2
OG044027
& UP
N/A
18-4334
50,500
4
2116318
& UP
N/A
18-4353
30 JET (40 HP)
4
0C159200
& UP
--
18-4325
50, 60
3
6428681
B122929
N/A
18-4357
40
4
0C159200
& UP
--
18-4325
50
3
OD000750
OG589999
N/A
18-4337
35
2
6445653
& UP
N/A
18-4355
50,55,60
3
B122930
D000749
N/A
18-4326
40,402
2
3336258
6445652
N/A
18-4355
55
3
6428681
0B122929
--
18-4357
Gasket set includes head gasket ➁
➂ Used on a 2.4L with a 3.38" bore ➃
Used on a 2.5L with a 3.5" bore
2 head gaskets required
➀
APPLICATIONS CONTINUES ON NEXT PAGE
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