Description
Thermostat 8M0045990 is for MerCruiser sterndrive 8.2L Magnum and 8.2L EC MerCruiser inboard engines It is a 170°F thermostat.
- 170°F thermostat
- Easy to replace with common tools
- See your owner’s manual for removal of non-functioning thermostat and replacement of new thermostat
- Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive
![Lectrotab 12 V Heavy Duty Tab Actuator – 6 Cable [A-BK-20] Certified](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/lectrotab-12-v-heavy-duty-tab-actuator-6-cable-bk-20-certified.webp)
![Flash Sale Blue Sea 8367 AC Rotary Switch Panel 30 Ampere 2 Positions + OFF, 2 Pole [8367]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/flash-sale-blue-sea-8367-ac-rotary-switch-panel-30-ampere-2-positions-off-2-pole.webp)
![Blue Sea 8357 AC Rotary Switch Panel 65 Ampere 2 Position + OFF, 2 Pole [8357] Buy Today](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/blue-sea-8357-ac-rotary-switch-panel-65-ampere-2-position-off-2-pole-8357-buy-to.webp)
![Top Rated Blue Sea 8358 AC Rotary Switch Panel 30 Ampere 3 Positions + OFF, 2 Pole [8358]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/top-rated-blue-sea-8358-ac-rotary-switch-panel-30-ampere-3-positions-off-2-pole-.webp)
![Fresh Stock Lake County Work Light – 1350 Lumens [25-1350]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/fresh-stock-lake-county-work-light-1350-lumens-25-1350.webp)