Sierra 18-3556 Thermostat
- Brand:
- Sierra
- Part no:
- 18-3556
Where to buy
View on Amazonpaid link
Specifications
- Opens at
- 130°F
The Sierra 18-3556 is a thermostat rated at 130°F. Sierra builds it as a swap-in for Mercury engines, and for Chrysler, Force and US Marine engines. It is the replacement for Mercury part number 895338. Check that number against the thermostat you are pulling out before you fit this one.
Our take
The 130°F rating is the figure to read first, since a thermostat's temperature decides how warm the engine runs. Match it against the rating on the one you are replacing, and use the 895338 number as the cross-check.