Sierra Marine Parts Catalog

290 HP Years Thermostat Kit Thermostat Valve Valve Seat Valve Diaphragm Valve Retainer Valve Cup Valve Spring Grommet 5 1965-68, 1986 18-543 18-3543 — — — — — — — 5.5 1959-64 18-3672 ➄ 18-3543 — — — — — — — 6 1965-79, 1986 18-3672 ➄ 18-3543 — — — — — — — 6 1990 18-3643 — — — — — — — — 7.5 1980-86 18-3672 ➄ 18-3543 — — — — — — — 8 1986 18-3672 ➄ 18-3543 — — — — — — — 8 1990 18-3643 — — — — — — — — 9.5 1964-73 18-3672 ➄ 18-3543 — — — — — — — OUTBOARD — JOHNSON/EVINRUDE (OMC/BRP) - Cooling System Crossflow V-4 Engine Crossflow V-6 Engine APPLICATION CONTINUED ON NEXT PAGE Fig. # Description Part # OEM # Qty. 1 Cover ~ 321690 1 2 Gasket 18-0977 332369 2 3 Valve Body ~ 321693 1 4 Grommet 18-2391 321692 2 5 Valve 18-3564 318395 2 6 Thermostat Gasket 18-0675 321932 2 7 Thermostat 18-3543 434841, 393659 2 8 Spring 18-1243 317245 2 9 Adapter ~ 331039 1 10 Nut ~ 306422 4 11 Screw Cover ~ 305652 3 Fig. # Description Part # OEM # Qty. 1 Screw — 306778 4 2 Cover — 321013 1 3 Gasket 18-2546 321184 1 4 Spring 18-1243 317245 1 5 Thermostat 18-3543 393659 1 6 Thermostat Gasket 18-0182 310058 1 Fig. # Description Part # OEM # Qty. 7 Retainer 18-3565 321220 1 8 Seal 18-3567 321221 1 9 Stainless Steel Bolt 18-3135 306643 1 10 Valve 18-3563 321027 1 11 Grommet 18-1219 320880 1 12 Valve Cap 18-3562 321222 1 ➀ All 1989-91 models except DR & DT ➁ Commercial ➂ Commercial also ➃ Except 60 degree models ➄ For complete Thermostat Kit including gaskets & spring use 18-3674 JOHNSON/EVINRUDE THERMOSTAT APPLICATION