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Sierra Marine Parts Catalog: OMC Sterndrive Cobra

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18-3670D
18-3677D
18-3676D
18-3677
THERMOSTAT KIT
160
18-3676
18-3670
-- CONTAINS --
THERMOSTAT KIT
THERMOSTAT KIT
Part #
O.E.#
Desc.
140
Fits: 2.5L & 3.0L (1982-88)
18-7170
3852071
O-Ring
-- CONTAINS --
For: 7.4L (1994-98), 8.2L (1998)
18-2917
3852111
Thermostat Gasket
-- CONTAINS --
Part #
O.E.#
Desc.
--
3856961
Thermostat
Part #
O.E.#
Desc.
HP
Year
HP
Year
18-3558
982554
Thermostat
18-7170
3852071
O-Ring
4.3L
1994-97
5.8L
1994-97
18-2858
314809
Thermostat Housing
18-2917
3852111
Thermostat Gasket
4.3 HO
1991-97
5.8 (EFI) 1993-97
Cover Gasket
--
3853983
Thermostat
5.0 L
1994-97
18-0929
313416
Thermostat Gasket
THERMOSTAT AND THERMOSTAT KIT APPLICATION
Thermostat
Thermostat
Model
Years
Thermostat
Kit
Model
Years
Thermostat
Kit
250
1970-73
18-3554
18-3653
90
1970
18-3554
18-3653
250
1979
18-3554
18-3653
100
1972-73
18-3554
18-3653
260
1979-81
18-3554
18-3653
120
1969-80
18-3554
18-3653
262
1989
18-3554
--
120
1980-81
18-3558
18-3670
305
1977-82
18-3554
18-3653
140
1973-80
18-3554
18-3653
1977-82
18-3554
18-3653
350
1980-81
18-3558
18-3670
140
350
1989
18-3554
--
155
1969-72
18-3554
18-3653
351
1992
18-3554
--
165
1972-76
18-3554
18-3653
454
1977-82
18-3554
18-3653
170
1974
18-3554
18-3653
460
1989
18-3554
--
175
1975-77
18-3554
18-3653
2.5L
1982-88
18-3558
18-3670
185
1978-80
18-3554
18-3653
3.0L
1982-88
18-3558
18-3670
190
1974-77
18-3554
18-3653
3.8L
1981-85
18-3554
18-3653
200
1979-81
18-3554
18-3653
1985-86
18-3554
18-3653
4.3L
210
1969-72
18-3554
18-3653
4.3L
1989-92
18-3554
--
215
1971
18-3554
18-3653
5.0L
1982-88
18-3554
18-3653
225
1971
18-3554
18-3653
5.0L
1989-92
18-3554
--
230
1979-81
18-3554
18-3653
5.7L
1982-88
18-3554
18-3653
235
1971
18-3554
18-3653
5.7L
1989
18-3554
--
235
1975-77
18-3554
18-3653
5.8L
1989-92
18-3554
--
240
1978
18-3554
18-3653
7.5L
1988
18-3554
18-3653
245
1972-75
18-3554
18-3653
1980 Models with "C" suffix only
1980 Models with "C1" suffix only
SINGLE DIAMETER HOSE
4  3/4"
5"
18-70021
18-70704
MOLDED HOSE
MOLDED HOSE
/ " ID
1 1/4" ID
34
5"
12  1/2"
12  3/4"
18-71218
18-70924
18-71337
MOLDED HOSE
MOLDED HOSE
MOLDED HOSE
1" ID
1 3/4" ID
1 3/4" ID
STRAIGHT HOSE
18-75125
18-75100
MOLDED HOSE
MOLDED HOSE
Straight 48"
Straight 48"
1 1/4" ID
1" ID
770
Items ending in "D" are Display Packaged - Regular number is Non-Display