Calorstat TH5077.92 Engine Coolant Thermostat

Engine Coolant Thermostat for Ford Applications

Calorstat TH5077.92 is a standard engine coolant thermostat built for precise coolant flow control in select Ford cooling systems. It opens at 197.0°F and uses a sealing flange with a 2.04 in outside diameter and 1.33 in height between flanges for the specified application.

Compatible with 2014-2017 Ford Fiesta, 2015-2018 Ford Focus, and 2018-2021 Ford EcoSport. Vernet is an OE supplier to Ford, and this thermostat follows the same application coverage used in those vehicles.

Key Features

• Engine coolant thermostat for Belts and Cooling > Thermostat and Housing applications
• Standard thermostat design for direct cooling system temperature regulation
• Start to open temperature: 197.0°F
• Sealing flange outside diameter: 2.04 in
• Height between flanges: 1.33 in
• Gasket or seal included: No
• Cross-reference part numbers include 172286 and 182286 for the same application

Detailed Description

Calorstat TH5077.92 is an engine coolant thermostat for Ford Fiesta, Ford Focus, and Ford EcoSport cooling system service. By regulating coolant flow at the specified opening temperature, it helps maintain proper engine operating temperature and supports stable warm-up and temperature control in everyday driving. This part number, TH5077.92, is listed with OE-style interchange coverage for select Ford applications.

Use this thermostat when servicing a cooling system that requires the listed flange dimensions and 197.0°F opening point. The standard design is suited to replacement work where accurate thermostat response is needed to restore factory-style coolant regulation.

Common Reasons for Replacement

• Engine running too cool or too hot
• Temperature gauge fluctuation during driving
• Slow cabin heat output after startup
• Cooling system service on a Ford Fiesta, Focus, or EcoSport
• Thermostat sticking open or closed

Installation Notes and Tips

Verify the thermostat housing and sealing surfaces before installation. Because no gasket or seal is included, confirm the correct seal is available for the application before assembly. Match the flange dimensions and opening temperature to the original specification, and bleed the cooling system after installation to remove trapped air.

Quality Assurance

Calorstat is associated with Vernet OE supply coverage for Ford applications, supporting fitment confidence for the listed vehicles. Confirm part number TH5077.92 against the original thermostat specification before installation.