Page 326 - 2021 Sierra Catalog

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All 1989-91 models except DR & DT Commercial
➂ Commercial also
➃ Except 60 degree models
➄ For complete Thermostat Kit including gaskets & spring use 18-3674
1 2 3 4 5 6
HP
5 5.5 6 6 7.5 8 8 9.5
➀ ➁
JOHNSON/EVINRUDE THERMOSTAT APPLICATION
Crossflow V-4 Engine
Fig. #
1 2 3 4 5 6 7 8 9 10 11
Description
Cover
Gasket
Valve Body Grommet
Valve
Thermostat Gasket Thermostat
Spring Adapter
Nut
Screw Cover
Part #
~ 18-0977 ~ 18-2391 18-3564 18-0675 18-3543 18-1243 ~
~
~
OEM # Qty.
321690 1 332369 2 321693 1 321692 2 318395 2 321932 2 434841, 393659 2 317245 2 331039 1 306422 4 305652 3
Crossflow V-6 Engine
OUTBOARD — JOHNSON/EVINRUDE (OMC/BRP) - Cooling System
Fig. #
Description
Screw
Cover
Gasket
Spring
Thermostat Thermostat Gasket
Years
1965-68, 1986 1959-64 1965-79, 1986 1990
1980-86 1986 1990 1964-73
Part #
—
— 18-2546 18-1243 18-3543 18-0182
OEM # Qty.
306778 4 321013 1 321184 1 317245 1 393659 1 310058 1
Fig. #
7 8 9 10 11 12
Description
Retainer
Seal
Stainless Steel Bolt Valve
Grommet
Valve Cap
Part #
18-3565 18-3567 18-3135 18-3563 18-1219 18-3562
OEM #
321220 321221 306643 321027 320880 321222
Valve Cup
— — — — — — — —
Qty.
1 1 1 1 1 1
Valve Spring Grommet
— — — — — — — — — — — — — — — —
Thermostat Kit
18-3672 ➄ 18-3672➄ 18-3672 ➄ 18-3643 18-3672➄ 18-3672 ➄ 18-3643 18-3672➄
Thermostat Valve
18-3543 — 18-3543 — 18-3543 — — — 18-3543 — 18-3543 — — — 18-3543 —
Valve Seat
— — — — — — — —
Valve Diaphragm Valve Retainer
— — — — — — — — — — — — — — — —
APPLICATION CONTINUED ON NEXT PAGE