Page 779 - 2021 Sierra Catalog
P. 779
I/O — MERCRUISER - Cooling System
Engine/Model
CID/#CYL
Housing
—
—
—
—
18-3647 18-3647 18-1994 ❶ ❷,❽ 18-3647❷,❾ ❸
18-3531 ❻ 18-3647❼ 18-3647 ❼ ❻
❼ 18-3531 ❻ ❼
❼
❼,➃ ❼,➄ ❼,➇
❻
❻ 18-3531 ❻ ❼
❼ 18-1994 ❶ ❷,❽ ❷,❾
❸
❻
❼
❼ 18-3531 ❻ ❼
❼
❿
18-1994 18-1994 ♥
18-1994 ♥ 18-1994 ♥
Thermostat Cover
18-1977-1
Thermostat & Thermostat Gasket Kit
Gaskets Req.
— 18-2834 18-2834 18-2834 18-2917 18-2917 18-2554 18-7173 18-2917 18-0398 18-0398 18-2917 18-2917 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-2554 18-7173 18-7173 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398 18-0398
18-2834 18-2834 18-2834
18-2844 18-2554 18-2553 18-2917 18-2553 18-2552 18-2844
Gaskets Req. - Design II
— — — —
18-2553 18-2552 18-2552
Gaskets Req. - Design III
18-2917 18-2917 18-2917
215 FORD
215 FORD
215 FORD MCM/MIE 225 FORD MCM/MIE 262 MAG EFI ALPHA 262 MAG EFI BRAVO 4.3L
4.3L
4.3L
4.3L
4.3L FWC
4.3L ALPHA
4.3L BRAVO
4.3L FWC
4.3L
4.3L EFI FWC
4.3L EFI ALPHA
4.3L EFI BRAVO
4.3L MPI
4.3L MPI
4.3L MPI EC
4.3L MPI FWC
4.3L MPI FWC
18-3551 18-3651 18-3551 18-3646 18-3649 18-3646 18-3649 18-3647 18-3649 18-3647 18-3649 18-3668 18-3551 18-3668 18-3551 18-3668 18-3649 18-3668 18-3551 18-3568 18-3555 18-3647 18-3649 18-3647 18-3649
18-3647 18-3649 18-3568 18-3555 18-3647 18-3649 18-3647 18-3649 18-3647 18-3649 18-3647 18-3649 18-3647 18-3649 18-3568 18-3555
18-3568 18-3555 18-3647 18-3649 18-3647 18-3649 18-3668 18-3551 18-3668 18-3551 18-3668 18-3551 18-3668 18-3551 18-3567 18-3555 18-3647 18-3649 18-3647 18-3649 18-3568 18-3555 18-3647 18-3649 18-3647 18-3649
18-3649 18-3646 18-3551 18-3646 18-3551 18-3646 18-3551 18-3551
18-3646 18-3551 18-3668 18-3551 18-3668 18-3551 18-3647 18-3649 18-3668 18-3551 18-3648 18-3649 18-3646 18-3551
♣ ♣
4.3LH
4.3LH
4.3LH
4.3LX
4.3LX
4.3LX
43.LX
4.3LX
4.3LX
4.3LX
4.3LXH FWC 4.3LXH ALPHA 4.3LXH BRAVO
262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 262/V-6 302/V-8 302/V-8 302/V-8 302/V-8 283/V-8 305/V-8 305/V-8 305/V-8
➂
➃ 305/V-8
215
215
225
888
190
198
198
200
200 200/5.0L 200/5.0L 200/5.0L 228
GM
FWC ALPHA BRAVO
FWC ALPHA
BRAVO
MCM/MIE (FORD) MCM/MIE (FORD) MCM/MIE (FORD) (FORD)
MIE MIE
18-1977-1 18-1977-1
18-0398 18-2553 18-2554 — 18-2554 18-7173 18-0398
GM GM
♣
♣
❶ Design I
❷ Design II
❸ Design III
❹ Aluminum Exhaust Manifold ❺ Cast Iron Exhaust Manifold ❻ Closed Cooling
❼ Standard Cooling ❽ With check ball
❾ Without check ball ❿ SN 4167000 & Up
Year Range
1996-1997 1996-1997 1988-1993 1987-1993 1993-1995 1993-1995 1993-2002 1996-2002 2996-2002 2002-2010 2002-2010 1998-2001 1998-2001 1998-2001 2002-2010 2002-2010 2010-2011 2002 2002-2010 1998-2002 1998-2002 1998-2002 1988-1993 1988-1993 1993-1995 1993-1995 1993-1997 1996-1997 1996-1997 1996-1997 1996-1997 1996-1997 1970 1971-1972 1973-1974 1971-1977 1963-1964 1977 1977 1985-1987
1977-1982
Beginning Ending Serial # Serial #
2781153 3040410 3040411 UP 3040411 3385720 3385721 4176999 0F803800 0K999999 0F803800 0K999999 B773243 F000877 B773243 F000877 F000878 F601126 F000878 F601126 F000878 M614999 0F601127 M614999 0F601127 M614999 M615000 &UP M615000 &UP L012009 M299999 L012009 M299999 L012009 M299999 M300000 &UP M300000 &UP A637496 &UP M300000 M614999 M615000 &UP L010044 M614999 L010044 M614999 L010044 M614999 B775130 F001219 B775130 F001219 F001220 F601126 F001220 F601126 F001220 K999999 F601127 K999999 F601127 K999999 F803114 K999999 F803114 K999999 F803114 K999999 2781153 3040410 3040411 3385720 3385721 4176999 3108723 4887829 1564539 1730903 4762210 6218461 4776402 4931099 6899058 B774444 6218462 B525981 0B525982 0F600999 B525982 UP B525982 UP 4765100 6218461
➁ Original thermostat housing listed as NLA. Order update kit 90736A24 ➂ Complete thermostat housing kit kit
➃ Single and 3-point drain system
➄ 7-point drain system
➅ Mechanical Throttle Body
THERMOSTAT APPLICATION (Cont.)
18-1977-1
➀ Original thermostat housing listed as NLA. Order update kit 87290A23
➆ Digital Throttle Body
➇ Emission Control Engine
➈ Manual drain system
➉ Air Actuated drain system
☞ Old Design
♠ New Design
♣ 160 degree
♥ For Stainless Steel version use 18-1989
18-1977-1
18-2553 18-2552 18-2552
18-2917 18-2917 18-2917
18-2917
761
