MERCRUISER
Cooling System
➀18-3668D
18-3668
THERMOSTAT KIT
18-3652
--CONTAINS--
18-3667
THERMOSTAT KIT
Part #
Description
O.E.#
THERMOSTAT KIT
--CONTAINS--
18-2552
Thermostat Cover Gasket
27-33179-2
--CONTAINS--
Part #
Description
O.E.#
18-2553
Thermostat Cover Gasket
27-47510
18-2555
Thermostat Cover Gasket
27-89656-1
Part #
Description
O.E.#
18-2554
Thermostat Cover Gasket
27-41812
18-2843
Thermostat Cover Gasket
27-74830
18-2555
Thermostat Cover Gasket
27-89656-1
18-3551
Thermostat
59137
18-3552
Thermostat
76270
18-3555
Thermostat
99155A1
18-7173
O-Ring
25-30224
18-1977-1
18-1989
THERMOSTAT HOUSING
THERMOSTAT HOUSING
18-1993
Replaces: 47441A1
Replaces: 87290A4, 861006A1
THERMOSTAT HOUSING
Fits 225, GM 260, 228, 898/198,
Stainless Steel
Replaces: 78984A01, 861493A3
185R, 898R, 228R, 2GR
18-1994
18-3678
18-3530-1
THERMOSTAT HOUSING
THERMOSTAT HOUSING
THERMOSTAT HOUSING
Replaces: 87290A4
Replaces: 90736A18
Replaces: 860256A4
For: Stainless Steel Version use 18-1989
For: GM 370, 425, 454 Mag & 465 V8
For: GM V6 and V8 (305 & 350 ci)
18-3532
18-3531
THERMOSTAT HOUSING AND COVER
18-1910
THERMOSTAT HOUSING
Replaces: 55131A5
THERMOSTAT HOUSING KIT
Replaces: 861188A1
Replaces: 861493A3
Fits: MCM/MIE GM V6 & V8, 305, 350, 454, and
Fits: MCM/MIE GM V-6 & V-8 305,350,454 & 502 cid
502cid, engines with closed cooling
Fits: 3.0L GM 181 L/4 (1999-Up)
engines with closed cooling systems
THERMOSTAT APPLICATION BEGINS ON NEXT PAGE
➀ Items ending in "D" are Display Packaged - Regular number is Non-Display
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