Marine Thermostats & Housings
Keep Your Engine Cool & Efficient with Quality Marine Thermostats & Housings
At The Outdoor Warehouse, we carry high-quality marine thermostats and thermostat housings designed to maintain optimal engine temperature and prevent overheating. Whether you’re running a Mercury, Yamaha, Volvo Penta, Suzuki, or MerCruiser engine, our marine cooling components ensure your system operates efficiently season after season.
Each thermostat is built for precise temperature control and durability under marine conditions, while corrosion-resistant housings provide long-lasting protection against saltwater and vibration.
Why Thermostats & Housings Are Essential
- Temperature Regulation: Maintains consistent engine heat for optimal fuel burn and performance.
- Overheating Prevention: Ensures proper coolant flow even during heavy use or warm weather.
- Durability: Marine-grade metals resist corrosion and mineral buildup in salt or brackish water.
- Engine Longevity: Reduces wear, prevents warping, and extends gasket life.
Types of Marine Thermostat Components
| Component | Function | Application |
|---|---|---|
| Thermostats | Opens and closes based on engine temperature | Controls cooling flow for optimal operation |
| Thermostat Housings | Secures thermostat and channels coolant | Protects against leaks and corrosion |
| Gaskets & Seals | Creates leak-proof connections | Prevents coolant loss between mating surfaces |
| Complete Kits | Includes thermostat, housing, and gasket set | Perfect for full replacements or rebuilds |
When to Replace a Marine Thermostat
- Overheating or uneven temperatures: Common sign of a stuck or clogged thermostat.
- Slow warm-up or low engine temps: Indicates thermostat is stuck open and needs replacement.
- Corrosion or leakage: Replace the housing if buildup or cracks are present.
- Regular maintenance: Replace every 2–3 seasons or per manufacturer’s recommendation.
Pro Tip
Always replace the gasket or O-ring when changing your marine thermostat or housing. Use marine-rated sealants only, and never run your engine without a thermostat—it ensures proper cooling and fuel efficiency.
Why Buy Marine Thermostats & Housings from The Outdoor Warehouse?
- OEM-quality replacements for Mercury, Yamaha, MerCruiser, Volvo Penta & Suzuki engines.
- Marine-grade design: Corrosion-resistant materials for long service life.
- Expert support: Get help matching parts to your engine make and model.
- Fast nationwide shipping and competitive pricing.
Frequently Asked Questions
Q: What temperature should a marine thermostat open?
A: Most marine thermostats open between 140°F and 160°F, depending on your engine type and manufacturer specifications.
Q: Can I run my boat without a thermostat?
A: No. Without a thermostat, your engine may never reach proper operating temperature, leading to poor fuel efficiency and carbon buildup.
Q: How do I test my marine thermostat?
A: Submerge the thermostat in hot water with a thermometer. It should begin to open at the rated temperature; if not, replace it immediately.
Maintain proper engine temperature and prevent overheating — shop marine thermostats and housings today at The Outdoor Warehouse.