Page 782 - 2021 Sierra Catalog

764
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
➀ Original thermostat housing listed as NLA. Order update kit 87290A23 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
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
Engine/Model
CID/#CYL
Year Range
1995-1997 1994-1997 1998-2001 1998-2001 2002 2002-2010 2005-2010
2008-2010 2008-2010
2002 2002 2002 2002-2010 2002-2010 2008-2010 2002
2002-2007
1999-2001
2002
2002-2007
1998-2001 1998-2001 2002 2002-2007 2002-2007 1995-2001 2002-2007 1991-1996 1991-1997 1988-1995 1988-1995 1988-1995 1988-1996 1997 1988-1997 1995-1997 1998-2002 1998-2002 1998-2002 2002-2010 2002-2010 1995-1996 1997-2001 1995-2001
Beginning Ending Serial # Serial #
F415189 K999999 F215561 K999999 L010019 M299999 L010019 M299999 M300000 M599999 M600000 &UP W310000 &UP
A300000 &UP A300000 &UP
M300000 M599999 M300000 M599999 M300000 M599999 M600000 &UP M600000 &UP A300000 &UP M300000 M599999
M600000 A299999
L304700 M299999
M300000 M316999
M317000 A089999
L002008 M299999 L002008 M299999 M300000 M316999 M317000 A089999 M300000 A089999 F350583 M299999 M300000 A089999 D505450 K040399 D505450 K999999 B773305 F600999 B773305 F600999 B773305 F600999 B773305 K001526 K001527 K999999 B773305 F600999 F601000 K999999 L010037 M599999 L010037 M599999 L010037 M599999 M600000 &UP M600000 &UP F225560 K001505 K001506 M299999 F355305 M299999
Housing
18-3531 ❻ ❼
❻
❺
❻,➆ ❻,➅,➇
❻,➆,➇ ❼,➃
❼,➄ ❼,➄ ❼,➄ ❼,➃ ❼,➇ ❻
❻
18-3531 ❻
❻
❻
18-3531 ❻ ❼
❻
❻
❼
❷,❽
➂ 18-1994 ❶ ❷,❽ ❷,❾
➂ 18-3531 ❻ ❼
❼ 18-3531 ❻ ❼
❼
❻
❼
❻ 18-3531 ❻ ❼
Thermostat Cover
Thermostat & Gasket Kit
18-3647 18-3647 18-3568 18-3647 18-3568
N/A
18-3647 18-3647 18-3647 18-3647 18-3647 18-3647 18-3568
18-3568 18-3568
18-3568 18-3647 18-3568
18-3647 18-3647 18-3647 18-3668 18-3647 18-3668 18-3668 18-3668 18-3647 18-3568 18-3647 18-3647 18-3568 18-3647 18-3647
18-3647 18-3647 18-3568 18-3647
Thermostat Gaskets Req.
18-3649 18-0398 18-3649 18-0398 18-3555 18-1508 18-3649 18-0398 18-3555 18-0398
18-0398 18-0398
18-0398 18-0398
18-3649 18-0398 18-3649 18-0398 18-3649 18-0398 18-3649 18-0398 18-3649 18-0398 18-3649 18-0398 18-3555 18-0398
18-0398
18-3555 18-1508
18-3555 18-1508
18-0398
18-3555 18-1508 18-3649 18-0398 18-3555 18-1508
18-0398 18-3649 18-0398 18-3649 18-0398 18-3649 18-0398 18-3551 18-7173 18-3649 18-0398 18-3551 18-2554 18-3551 18-7173 18-3551 18-7173 18-3649 18-2844 18-3555 18-1508 18-3649 18-0398 18-3649 18-0398 18-3555 18-1508 18-3649 18-0398 18-3649 18-0398 18-0398 18-3649 18-0398 18-3649 18-2844 18-3555 18-1508 18-3649 18-0398
Gaskets Req. - Design II
Gaskets Req. - Design III
350 MAG BRAVO MPI 350 MAG EFI SKI
350 MAG MPI FWC 350 MAG MPI
350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8
350/V-8 350/V-8
350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8
350/V-8
350/V-8
350/V-8
350/V-8
350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8 350/V-8
350 MAG MPI FWC
350 MAG MPI FWC
350 MAG MPI FWC DTS
350 MAG MPI FWC
350 MAGMPIFWC EC DTS
EC
350 MAG MPI
350 MAG MPI
350 MAG MPI
350 MAG MPI
350 MAG MPI
350 MAG MPI
350 MAG MPI HORIZON
350 MAG MPI HORIZON
ALPHA BRAVO
EC
350 MAGMPIHORIZON MIE
350 MAGMPIHORIZON MIE
350 MAGMPIHORIZON MIE
350 MAGMPIMIEFWC 350 MPI MIE
350 MAGMPIMIEFWC 350 MAGMPIMIEFWC 350 MAG MPI MIE 350 MAG MPI SKI
350 MAG MPI SKI 350 MAG SKI
350 MAG SKI 5.7L
18-1977-1
18-2552
18-2553 18-2552 18-2552 18-0398
18-0398
18-2917
18-2917 18-2917 18-2917
5.7L
5.7L
5.7L
5.7L FWC
5.7L ALPHA 5.7L BRAVO 5.7L (GEN +) 5.7L (GEN +) 5.7L (GEN +) 5.7L (GEN +) 5.7L (GEN +) 5.7L EFI FWC 5.7L EFI FWC 5.7L EFI ALPHA
FWC ALPHA BRAVO FWC
THERMOSTAT APPLICATION (Cont.)
I/O — MERCRUISER - Cooling System