Engineered Marine Products 160 Degree Thermostat Kit for Mercruiser Cooling Systems

This 160 degree thermostat kit from Engineered Marine Products is built for Mercruiser cooling systems, giving boat owners a direct, reliable replacement when the factory thermostat fails or an engine starts running hot or cold. The kit regulates coolant flow through the raw water or closed cooling circuit, opening at 160 degrees Fahrenheit to keep engine operating temperature within the range the powerhead was designed for. Maintaining the correct opening temperature protects against overheating on one end and incomplete combustion, carbon buildup, and poor fuel economy on the other, both of which shorten engine life over time.

The kit features a machined housing component for a precise, consistent fit and is sized to install into standard Mercruiser thermostat housings without modification. Engineered Marine Products has supplied both OEM and aftermarket marine cooling parts for over 40 years, sourcing and engineering components to meet OEM standards at a lower cost than many competing kits. This 75-03222 kit is sold as a complete unit, so installers have what they need for a straightforward thermostat replacement in one purchase.

Specifications

• Brand: Engineered Marine Products
• Manufacturer Part Number: 75-03222
• Thermostat Temperature Rating: 160 degrees Fahrenheit
• Application: Mercruiser cooling systems
• Exterior Finish: Machined
• Product Dimensions: 8 x 5 x 0.5 inches
• Weight: 0.179 pounds
• UPC: 840080476704

Frequently Asked Questions

What temperature does this thermostat kit open at? The Engineered Marine Products thermostat kit, part number 75-03222, opens at 160 degrees Fahrenheit.

What engines is the 75-03222 thermostat kit designed for? This kit is designed for Mercruiser cooling systems, making it a match for Mercruiser-equipped boats needing a 160 degree thermostat.

Is this a complete thermostat kit or just the thermostat? Part number 75-03222 is sold as a complete thermostat kit, not a bare thermostat, for a full replacement.

What are the dimensions of the 75-03222 thermostat kit? The kit measures 8 x 5 x 0.5 inches as packaged.

How much does the thermostat kit weigh? It weighs 0.179 pounds.

What finish does the thermostat housing component have? The housing component has a machined exterior finish for a precise fit.

Who manufactures the 75-03222 thermostat kit? Engineered Marine Products manufactures this 160 degree thermostat kit, part number 75-03222.

Why does the thermostat opening temperature matter? A 160 degree opening temperature keeps the engine within its designed operating range; running too cool can cause incomplete combustion and carbon buildup, while a failed thermostat can lead to overheating.

Is Engineered Marine Products an OEM supplier or aftermarket only? Engineered Marine Products has supplied both OEM and marine aftermarket parts for over 40 years, engineering the 75-03222 kit to OEM standards.

Does the 75-03222 kit include a gasket? The listing identifies this as a thermostat kit rather than a single component, though the dossier does not itemize every part included in the box.