Sierra 18-3536 Thermostat
- Brand:
- Sierra
- Part no:
- 18-3536
Where to buy
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This is a Sierra replacement thermostat, part 18-3536, for Mercury Marine engines. Its temperature rating is 143 degrees Fahrenheit. Sierra gives it as interchangeable with Mercury 833072003 and 833072, which are the numbers to compare with your old thermostat.
Our take
The 143 degree Fahrenheit rating is the first thing to check, since it should match what your engine calls for. It is given as a replacement for Mercury Marine engines, interchangeable with Mercury 833072003 and 833072.