A-Premium Engine Coolant Thermostat Housing Assembly — Black Plastic Housing with 180°F Thermostat, Gasket Included

The A-Premium Engine Coolant Thermostat Housing Assembly is a complete replacement unit that pairs a 180°F thermostat with a durable plastic housing engineered to restore proper coolant flow and temperature regulation.

This assembly combines a factory-style thermostat and matching housing to replace worn or leaking coolant control components on a wide range of Ford-, Mazda-, Lincoln- and Mercury-platform vehicles. Designed as a direct-fit aftermarket alternative, it replicates OE mounting points and outlet orientation so installation is straightforward for professional mechanics and experienced DIYers. The black plastic housing includes a gasket and three mounting holes and has been tested for strength and sealing reliability.

What vehicles will this A-Premium thermostat housing fit?

Compatibility covers many popular mid-2000s through late-2010s models from Ford and Mazda plus select Lincoln and Mercury applications. Before ordering, compare the part reference numbers and confirm the engine size listed to ensure proper match.

• Ford: Escape (2005–2019), Focus (2003–2011), Fusion (2006–2020), Ranger 2.3L (2007–2011), Transit Connect 2.5L (2014–2022)
• Lincoln: MKZ 2.5L (2011–2012)
• Mazda: 3, 3 Sport, 5, 6, B2300 2.3L, CX-7, MX-5 Miata 2.0L, Tribute (various model years)
• Mercury: Mariner, Milan (2006–2011)

How does the thermostat assembly perform compared with original equipment?

This unit is made from durable plastic and includes a thermostat calibrated to open at 180°F, mirroring common OEM specifications. It has passed hardness and crush testing to ensure consistent sealing and stable operation under normal thermal cycles.

• Thermostat opening temperature: 180°F for standard operating range
• Material: engineered plastic for corrosion resistance and weight savings
• Mounting: three bolt holes and a single outlet port matching OE orientation
• Includes gasket to help prevent leaks at the flange

What are the physical specifications and part references to check before buying?

The housing flange dimensions and part reference numbers let you verify fitment against the unit being replaced. Use these specs and references to cross-check with your vehicle’s existing part label or service manual.

• Flange length: 2.75 in; thickness: 0.46 in; width: 3.31 in
• Gasket type: included gasket for the flange
• Mounting hole quantity: 3; outlet port quantity: 1
• Reference numbers include 902-733, 51282K, 3M4Z8575AB and many OEM cross-refs

How easy is installation and what comes in the box?

The assembly is intended as a straightforward swap for compatible vehicles, minimizing the need for additional parts. It arrives complete with the thermostat installed and a gasket, reducing the number of components to source and lowering installation time.

• Pre-installed thermostat and included gasket for a single-unit replacement
• Designed to match OE mounting points to simplify alignment
• Plastic construction reduces chance of corrosion compared with some metal housings
• A-Premium backs the part with a one-year unlimited-mileage guarantee

Who is this for: The A-Premium Engine Coolant Thermostat Housing Assembly suits vehicle owners and mechanics who need a complete, cost-effective replacement for a leaking, cracked, or failed thermostat housing on supported Ford, Mazda, Lincoln, and Mercury models. It’s especially useful when you want a single part that includes the thermostat and gasket, saving time and avoiding multiple part numbers during repairs. Ideal for routine cooling-system maintenance, radiator or water pump jobs, and any service that requires removal of the thermostat housing.