Thermostat Kit for Mercruiser 4.3L 262 V6 1983-95 140° 18-3668 807252Q4

Description

Thermostat Kit for Mercruiser, 140 Degree
EMP Part # 75-03948
Includes thermostat & required gaskets as shown. Fits most 1983 through 1996 Mercruiser V-6 and V-8 GM engines that use a 140 degree thermostat as detailed in the application chart below.
We also offer kits with the brass sleeve - See our other listings
Replaces Merc Part #: N/A
Replaces Mallory Marine Part #: 9-43150
Replaces Sierra part #: 18-3668
Kit Contains:
(1) Thermostat (Replaces Merc Part #: 59137)
(1) O-Ring (Replaces Merc Part #: 25-30224)
(1) Gasket (Replaces Merc Part #: 27-33179-2)
(1) Gasket (Replaces Merc Part #: 27-47510)
(1) Gasket (Replaces Merc Part #: 27-41812)
Fits the Following Mercruiser Applications:
HP/Model
CID
Serial #
Year
185
229 (GM V-6)
6330183 - 6919655
1983 - 1984
175
262 (GM V-6)
0B527955 - 0B773242
1987
185
262 (GM V-6)
0A331455 - 0B527954
1985 - 1986
205
262 (GM V-6)
0B527955 - 0B775129
1985 - 1987
4.3L
262 (GM V-6)
0B773243
-
0F601126
1987 - 1995
898
305 (GM V-8)
6218462 - 6899057
1983 - 1984
200
305 (GM V-8)
6899058 - 0B774444
1985 - 1987
228
305 (GM V-8)
6218462 - 6899268
1982 - 1984
230
305 (GM V-8)
6899269 - 0B773739
1985 - 1987
230 MIE
305 (GM V-8)
5907058 - 0B78151
1981 - 1987
5.0L
305 (GM V-8)
0B774445 - 0F600999
1988 - 1995
5.0L MIE
305 (GM V-8)
0B788152 - 0C396832
1988
5.0LX
305 (GM V-8)
5907058 - 0F600999
1988 - 1995
260
350 (GM V-8)
6218462 - 0B788151
1982 - 1987
260 MIE
350 (GM V-8)
5907058 - 0B788151
1981 - 1987
300
350 (GM V-8)
6668677 - 0B430367
1985 - 1986
350 Mag
350 (GM V-8)
0A635178 - 0F600999
1986 - 1995
350 Mag Ski
350 (GM V-8)
0D505450 - 0K040399
1991 - 1996
5.7L
350 (GM V-8)
0B773305 - 0F600999
1988 - 1995
5.7L MIE
350 (GM V-8)
0B788152 - 0F600999
1988 - 1995
5.7L Ski
350 (GM V-8)
0A338533 - 0F775199
1985 - 1995
330 MIE
w/standard cooling
454 (GM V-8)
6083145 - 0B816540
1982 - 1987
340 MIE
w/standard cooling
454 (GM V-8)
5889914 - 0B788365
1981 - 1987
370
454 (GM V-8)
6721528 - 0B714586
1985 - 1987
454 Mag Alpha/Bravo
454 (GM V-8)
0A631894 - 0F304999
1986 - 1994
525 SC
454 (GM V-8)
0D456000 - 0L415623
1991 - 1999
7.4L
454 (GM V-8)
0B771113 - 0F351999
1988 - 1994
7.4L MIE
454 (GM V-8)
0B788366 - 0F349999
1988 - 1994
390 MCM & MIE
482 (GM V-8)
2781129 - 3042731
1969 - 1970
460
482 (GM V-8)
4179554 - 6181046
1983 - 1986
465
502 (GM V-8)
0C849992 - 0F213244
1990 - 1994
500, 500 EFI
502 (GM V-8)
0F213293 & UP
1994 - 2004
502 Mag
502 (GM V-8)
0C878221 - 0F114528
1990 - 1993
8.2L MIE
502 (GM V-8)
0C878221 - 0D857199
1990 - 1992
We are happy to help you select the proper replacement part for your application but we trust that you have the proper skills, tools and manuals to properly diagnose your particular engine. If you need to contact us in regards to a specific application question, please e-mail us. Please note, for questions asked via e-mail on weekends or holidays, we may not be able to respond until the next business day. Please include your engine model and year of manufacture when contacting us.
185hp 175hp 205hp 4.3L 898 200hp 228hp 230hp 5.0L 5.0LX 260hp 300hp 350Mag 5.7L 5.7LX 330hp 340hp 370hp 454Mag 7.4L 7.4LX MIE 390hp 460hp 465hp 502Mag hp 8.2L 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996