Page 780 - 2021 Sierra Catalog

Engine/Model
CID/#CYL
Year Range
1982-1984 1977-1980 1985-1987 1981-1987 1981-1987
Beginning Ending Serial # Serial #
6218462 6899268 4765100 5907057 6899269 B773739 5907058 B788151 5907058 B788151 6218462 B525981 5907058 0B5225505 5907058 B522505 5907058 B522505 B522506 B525981 B522506 B525981 B522506 B525981 B525982 F600999 B525982 UP B522506 B525981 B525982 F600999 0B522506 0B788151 0B525982 0F600999 B774445 F600999 B774445 F600999 B774445 F600999 B774445 F600999 L015751 M599999 M600000 &UP L015751 M599999 L015751 M599999 M600000 &UP L012052 M299999 L012052 M299999 L012052 M299999 B788152 C396832 B788152 C396832 B788152 C396832 M300000 M599999 M600000 &UP W310000 &UP A300000 &UP A300000 &UP M300000 &UP M300000 M599999 M300000 M599999 M600000 &UP A300000 &UP B773740 F600999 B773740 F600999 B773740 F600999 4762210 6218461 6218462 6899057 2399198 2694014
Housing
18-1994 18-3651 18-1994 18-1994 ❼ ❻ 18-1994 ♥
❼
❻ ☞,❼ ♠,❼
18-1994 ♥
18-1994 ♥
18-1994 ❶ ❷,❽ ❷,❾
❸ 18-3531 ❻ ❻
❼
❼
❼ 18-3531 ❻ ❼
❼
❻
❼,❽,➀ 18-1994 ❶, ❼ ❻
❻
❻,➆ ❻,➅,➇ ❻,➆,➇ ❼,➃
❼,➄
❼,➄
❼,➄
❼,➇ 18-1994 ❶ ❷,❽
❸
18-1994
Thermostat Cover
18-1977-1 18-1977-1 18-1977-1 18-1977-1 18-1977-1
Thermostat & Thermostat Gasket Kit
Gaskets Req. Gaskets Req. -
Design II
Gaskets Req. - Design III
228
228
230
230
230
230
230
230
230
230/5.0L GM IB 230/5.0L GM IB 230/5.0L GM IB 230/5.0L-LX GM 230/5.0L-LX GM 230/5.0L GM IB 230/5.0L-LX GM 230/5.0L MIE 230/5.0LX GM 5.0L
305/V-8 305/V-8 305/V-8 305/V-8 305/V-8
➄
➅
➂ ➄ ➃ ➄ ➅
➂
➃
➃
305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 305/V-8 327/V-8
18-3668 18-3551 18-3646 18-3551 18-3668 18-3551 18-3668 18-3551 18-3646 18-3551 18-3668 18-3551 18-3646 18-3649 18-3668 18-3551 18-3651 18-3551 18-3668 18-3551 18-3648 18-3649 18-3651 18-3551 18-3668 18-3551 18-3668 18-3551 18-3648 18-3649 18-3648 18-3649 18-3646 18-3649 18-3647 18-3649 18-3668 18-3551 18-3668 18-3551 18-3668 18-3551 18-3647 18-3649 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 18-3646 18-3551 18-3668 18-3551 18-3668 18-3551 18-3568 18-3555
18-3647 18-3649 18-3647 18-3649 18-3647 18-3649 18-3647 18-3649 18-3647 18-3649 18-3668 18-3551 18-3668 18-3551 18-3647 18-3649 18-3646 18-3551 18-3668 18-3551 18-3651 18-3551
18-2554 18-2553
18-2844
18-2554 18-2553
18-2554 18-2553
18-2553 18-2844
18-2553 18-2554
18-2553 18-2844
18-2553 18-2554
18-2553 18-2844
18-2553 18-2554
18-2552 18-7173
18-2553 18-2844
18-2553 18-2554
18-2552 18-7173
18-2552 18-7173
18-2552 18-7173
18-2553 18-2844
18-2917 —
18-2554 18-2553
18-7173 18-2552
18-7173 18-2552
18-0398 18-2917 18-1508 18-2917 18-0398 18-2917 18-0398
18-0398
18-0398
18-1508
18-0398
18-0398
18-2553 18-2844 18-7173
MIE
18-2917
18-2917 18-2917 18-2917
18-2917
18-2917 18-2917 18-2917
18-2917
MIE
MIE FWC
GM MIE GM IB GM IB
♣
♣
♣ ♣ ♣ ♣
5.0L
5.0L
5.0L
5.0L (GEN +) 5.0L (GEN +) 5.0L (GEN +) 5.0L (GEN +) 5.0L (GEN +) 5.0L EFI FWC 5.0L EFI ALPHA 5.0L EFI BRAVO
5.0L MIE 5.0L MIE 5.0L MIE 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L MPI 5.0L LX 5.0LX 5.0LX 898
898
225 (GM)
FWC
FWC FWC FWC FWC FWC
18-1977-1 18-1977-1
18-2554 18-2553
18-0398
18-0398 18-2917 18-0398 18-2917 18-0398
18-0398
18-0398 18-2917 18-0398
18-0398
18-0398
18-0398
18-2554 18-2553
18-7173 18-2552
18-0398
18-2844 18-0398
18-2554 18-2553
18-2553 18-2844
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
ALPHA BRAVO
EC
FWC FWC ALPHA BRAVO
❶ Design I
❷ Design II
❸ Design III
❹ Aluminum Exhaust Manifold ❺ Cast Iron Exhaust Manifold ❻ Closed Cooling
❼ Standard Cooling 762 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
DTS
EC
EC DTS
1988-1995 1988-1995 1988-1995 1988-1995 1998-2002 2002-2010 1998-2002 1998-2002 2002-2010 1998-2001 1998-2001 1998-2001 1988 1988 1988 2002 2002-2010 2005-2010 2008-2010 2008-2010 2002-2010 2002 2002 2002-2010 2008-2010 1988-1995 1988-1995 1988-1995 1977-1982 1983-1984 1967-1969
18-1977-1
THERMOSTAT APPLICATION (Cont.)
I/O — MERCRUISER - Cooling System
18-1977-1
18-1977-1 18-1977-1 18-1977-1
18-2917