Sierra 18-3549 Thermostat for Mercury Outboards (49°C)

 

Part No: SM-18-3549

Sierra Marine 120°F (48.9°C) thermostat 18-3549 will replace the following thermostats:

- Mercury 14586

- Mallory 9-43014

The thermostat is suitable for the following engines:

Mercury & Mariner:

- 6hp 2-cylinder (0A197112 - 0T800999)

- 8hp 2-cylinder & 9.9hp 2-cylinder (0A197112 - 0T999999, 1B000001 & Up)

- 10 Magnum (0D038000 - 0D279999, 0D281000 - 0T979999)

- Sea Pro 10 / Marathon 10 hp (0D038000 - 0D279999, 0D281000 - 0T999999, 1B000001 & Up)

- XR10 (0D038000 - 0D279998, 0D281000 - 0T979999)

- 15hp (0A197112 - 0T999999, 1B000001 & Up)

- 15hp 2-cylinder (B292414 & Later)

- Sea Pro 15 / Marathon 15 hp (0G044365 - 0T999999, 1B000001 & Up)

- 18XD, 20XD 2-cylinder & 25XD (B114231 & Up, 6443973 - 0B238463)

- 20hp 2-cylinder (0B238464 - 0T979999)

- 20 Jet (0G044027 - 0T999999, 1B000001 & Up)

- 25hp 2-cylinder 25 Sea Pro / Marathon & Super 15 2-cylinder (B238464 & Later, 0B238464 - 0T979999)

- 25hp 2-cylinder (0T980000 - 0T999999, 1B000001 & Up)

- 30hp 2-cylinder (G055314 & Later, 0G055314 - 0G760299)

- 40hp 2-cylinder (0G055314 - 0G760299)

- 40hp 4-cylinder 4-stroke, 50hp 4-cylinder 4-stroke & 60hp 4-cylinder 4-stroke (0T178500 - 0T598999)

- 40hp EFI 4-cylinder 4-stroke, 50hp EFI 4-cylinder 4-stroke & 60hp EFI 4-cylinder 4-stroke (0T409000 - 1B344306, 1C000001 & Up)

- 40hp EFI Jet 4-cylinder 4-stroke (1C051324 & Up)

- 45 Jet, 50hp 3-cylinder, 55hp 3-cylinder & 60hp 3-cylinder (0D000750 - 0G589999)

- 65 Jet & 65 Jet 3-cylinder (0D283222 - 0T979999, 0T980000 - 0T999999, 1B000001 & Up)

- 75hp 3-cylinder (0C222000 - 0T999999, 1B000000 & Up)

- 80 Jet (0D283222 - 0T999999, 1B000001 & Up)

- 90hp 3-cylinder (0C222000 - 0T999999, 1B000001 & Up)

- 100hp 4-cylinder (0A722297 - 0G965520, Mercury 0B209468 - 0D283221)

- 115hp 4-cylinder (0C100000 - 0T999999, 1B000001 & Up)

- 125 4-cylinder (0D283222 - 0T999999, 1B000001 & Up)

- 250hp (0C101891 & Up)

- 275hp (0C101891 & Up)

 

Brand	Sierra
Suitable For	Mercury