Sierra Marine Parts Catalog: Mercruiser
THERMOSTAT APPLICATION (Cont.)
Engine / Model
CID / # CYL
Year
Beginning
Ending
Housing
Thermostat
Thermostat &
Thermostat
Gaskets
Gaskets
Gaskets
Range
Serial #
Serial #
Cover
Gasket Kit
Required
Required - Design II
Required - Design III
MX 6.2L BLACK SCorpIoN
377/V-8
2003-2006
M391600
W690192
➈
MX 6.2L BLACK SCorpIoN
377/V-8
2006-2007
W690192
W698432
➈
SCorpIoN 377
377/V-8
2008-2010
W698433
& Up
➈
SCorpIoN 377
377/V-8
2008-2010
W698433
& Up
➉
SCorpIoN 377 Ho eC
377/V-8
2008-2010
A091488
A092170
➇
325 MCM/MIe
427/V-8
1969-1972
2278747
3780449
330 (WITH MerC TrANS)
454/V-8
1977-1981
4623115
6083144
330 (WITH B/W) FWC
454/V-8
1982-1987
6083145
B816540
❻
454/V-8
1982-1987
6083145
B816540
18-3678
330 (WITH B/W)
❼
330 MIe (WITH MerC TrANS)
454/V-8
1977-1980
4623115
5889913
340 MIe FWC
454/V-8
1981-1987
5889914
B788365
❻
454/V-8
1981-1987
5889914
B788365
18-3678
340 MIe
❼
454/V-8
1981-1987
5889914
B788365
❼, ❾
340 MIe
5889914
0D715493
340/7.4L MIe
454/V-8
1974-1976
3780450
4623109
350 MIe
350 GM (MAGNUM)
A635178
B525981
350 GM (MAGNUM)
B525982
Up
➂
☞
350 GM (MAGNUM)
B525982
Up
➃
♠
350 GM (MAGNUM)
B525982
Up
18-3649 ♣
➃
♠
370
454/V-8
1978-1985
4179554
6721527
454/V-8
1985-1987
6721528
B714586
370
370 TrS GM
4179554
6721527
370 TrS GM
6721528
Up
390 GM
2781129
2825059
390 GM MCM/MIe
2781129
3042731
454/V-8
1980-1986
4179554
0B457644
400
400 TrS GM
4179554
Up
420 GM
A398941
Up
420
454/V-8
1987-1989
A398941
B622418
454/V-8
1990-1993
A398941
D937011
18-3678
425
440
454/V-8
1983-1986
4179554
B485220
454/V-8
1995-1996
F347100
F347277
450
454/V-8
1991-1999
D456000
L415623
525 SC
454/V-8
1986-1988
A631894
B785148
18-3678
454 MAG ALpHA
❶
454/V-8
1986-1988
A631894
B785148
❷, ❽
454 MAG ALpHA
454/V-8
1988-1992
B721206
D805068
18-3678
454 MAG BrAVo
❶
454/V-8
1995-1997
F305000
K999999
❷, ❾
454 MAG BrAVo
454 MAG BrAVo
454/V-8
1988-1992
B721206
D805068
❷, ❾
454/V-8
1992-1994
D805069
F304999
❷, ❾
454 MAG BrAVo
454 MAG eFI
454/V-8
1995-1997
F115700
F802349
❼
454 MAG eFI SKI
454/V-8
1995-1997
F215800
K999999
❼
454 MAG MpI
454/V-8
1996-2001
F802350
M024999
❼
454 MAG MpI FWC
454/V-8
1998-2001
L010029
M024999
❻
454 MAG MpI HorIZoN MIe
454/V-8
1998-2001
L002200
L674000
❻
454 MAG MpI SKI
454/V-8
1996-1997
F820100
K999999
❼
525 SC
454/V-8
1991-1999
D456000
L415623
454/V-8
1995-1997
0F352000
0K999999
7.4L BrAVo
❼
7.4L BrAVo
454/V-8
1988-1991
B771113
D603117
18-3678
❶
454/V-8
1988-1991
B771113
D603117
❷, ❽
7.4L BrAVo
454/V-8
1992-1994
D603118
F351999
❷, ❾
7.4L BrAVo
7.4L eFI MIe
454/V-8
1996-1997
F874815
K999999
❼
7.4L eFI MIe FWC
454/V-8
1996-1997
F874815
K999999
❻
7.4L MIe FWC
454/V-8
1988-1992
B788366
D715493
❻
454/V-8
1988-1992
B788366
D715493
❼, ❽
7.4L MIe
454/V-8
1989-1994
C391564
D715493
7.4L MIe
❼
7.4L MIe FWC
454/V-8
1989-1994
C391564
D715493
❻
454/V-8
1989-1994
D715494
F349999
7.4L MIe
❼
7.4L MIe FWC
454/V-8
1989-1994
D715494
F820141
❻
454/V-8
1995-1996
F350000
F820141
7.4L MIe
❼
7.4L MIe
454/V-8
1996-1997
F820142
K999999
❼
7.4L MIe
454/V-8
1996-1997
F820142
K999999
❻
7.4L MpI
454/V-8
1998-2001
L010003
M024330
❼
7.4L MpI MIe
454/V-8
1995-2001
F563052
M025999
❼
7.4L MpI MIe FWC
454/V-8
1995-2001
F563052
M025999
❻
7.4LX BrAVo eFI
454/V-8
1996-1997
F820000
K999999
❼
7.4L BrAVo MpI
454/V-8
1996-1997
F602010
K999999
❼
7.4L MIe
0C391564
0D715493
0C391564
0F349999
7.4L MIe
482/V-8
1969-1970
2781129
3042731
390 MCM/MIe
482/V-8
1983-1986
4179554
6181046
460
465
502/V-8
1990-1994
C849992
F213244
18-3678
4208730
6218036
470
470
6218037
Up
--
485
5685394
Up
--
488
6170297
Up
--
500
502/V-8
1994-1998
F213293
L001772
500 (GeN +)
502/V-8
1999
L414639
L601036
500 eFI
502/V-8
1999-2005
L001477
M907127
502/V-8
1990-1993
C878221
F114528
502 MAG
❽
502 MAG eFI
502/V-8
1993-1995
D840650
F802599
❼
502 MAG MpI
502/V-8
1996-1997
F802600
K999999
❼
502 MAG MpI FWC
502/V-8
1998-2001
L017000
M024999
❻
525 eFI
502/V-8
2003-2010
M900146
& Up
N/A
575 GM
0A677429
0D763716
A677429
Up
575
8.2L MAG
502/V-8
2010
A350340
& Up
8.2L MIe eC
502/V-8
2010
A350802
& Up
8.2L MIe
502/V-8
1990-1992
C878221
D857199
❼
8.2L MIe FWC
502/V-8
1990-1992
C878221
D857199
❻
8.2L MIe
502/V-8
1993-1996
D857200
F350274
❼
8.2L MIe
502/V-8
1996
F350275
F819619
❼
8.2L MIe FWC
502/V-8
1993-1996
D857200
F819619
❻
8.2L MpI MIe
502/V-8
1996-2001
F819620
L674200
❼
8.2L MpI MIe FWC
502/V-8
1996-2001
F819620
L674200
❻
500 BULLDoG
540/V-8
1990-2001
C577254
M050281
3108723
Up
888 ForD
888 ForD MCM
3108723
4887829
898/198 GM
4762210
6218461
898/198 GM MCM/MIe
4762210
6218461
898 GM
6218462
Up
Design I
❾ Without check ball
➄ 7-point drain system
♣ 160 degree
❶
Design II
❿ SN 4167000 & Up
➅ Mechanical Throttle Body
♥ For Stainless Steel version use 18-1989
❷
Design III
➀ Original thermostat housing listed as NLA.
➆ Digital Throttle Body
❸
Aluminum Exhaust Manifold
Order update kit 87290A23
➇ Emission Control Engine
❹
Cast Iron Exhaust Manifold
➁ Original thermostat housing listed as NLA.
➈ Manual drain system
❺
Closed Cooling
Order update kit 90736A24
➉ Air Actuated drain system
❻
639
Standard Cooling
➂ Complete thermostat housing kit kit
☞ Old Design
❼
With check ball
➃ Single and 3-point drain system
♠ New Design
❽