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Maintain optimal engine operating temperatures with the OMC Thermostat, part number 18-3561. This critical component is designed to regulate the flow of coolant through your engine's cooling system, ensuring it reaches and maintains its ideal operating temperature quickly and efficiently. By opening and closing at specific temperature thresholds, the thermostat prevents both undercooling and overheating, which are detrimental to engine performance, fuel efficiency, and longevity.
The OMC Thermostat 143D is a vital part of your engine's cooling system. Its function is to act as a gatekeeper for the coolant. When the engine is cold, the thermostat remains closed, allowing the coolant to circulate only within the engine block, enabling it to warm up quickly. Once the coolant reaches the thermostat's designated opening temperature, it begins to open, allowing coolant to flow to the radiator or heat exchanger to be cooled. This continuous cycle is essential for preventing thermal shock and maintaining the engine's efficiency.
This thermostat is specifically designed for compatibility with OMC (Outboard Marine Corporation) engines, ensuring a perfect fit and reliable performance. Proper functioning of the thermostat is key to avoiding a range of engine problems, from poor performance and increased emissions due to a cold engine, to severe internal damage from overheating. Investing in a quality replacement like the OMC Thermostat 18-3561 is a proactive step towards ensuring your engine’s reliability and extending its operational life. Whether you are a recreational boater or a professional mariner, maintaining your engine’s cooling system with the correct parts is paramount for a successful and enjoyable time on the water.
| Specification | Value |
|---|---|
| Manufacturer Part Number | 18-3561 |
| Replaces Part Number | Sierra 18-3561 |
| Temperature Rating | 143°F |
| Product Type | Thermostat |
| Material | Metal |
| Approximate Diameter | 2.5 in |
| Approximate Height | 1.5 in |
| Approximate Weight | 0.1 lbs |
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