Sierra Thermostat MerCruiser #1458686 18-3549

Mariner: 6 -8 -9.9 (2 cyl.) A197112 Later - Sea Pro 10 D038000 Later - 15 (2 cyl.) B292414 Later - 18XD - 20XD - 25XD B114231 Later - 25 ( 2 cyl.) 25 Sea Pro B238464 Later - 30 (2 cyl.) G055314 Later - 45 Jet - 50 - 55 - 60 (3 cyl.) G290585 Later