Calorstat TH6991.87J Engine Coolant Thermostat Housing Assembly

Mercedes-Benz B200 Thermostat Housing Assembly

Calorstat TH6991.87J is an engine coolant thermostat housing assembly built for the cooling system on select Mercedes-Benz B200 models. It uses a plastic housing with a black finish, includes a gasket, and features two outlet ports for the specified application.

Key Features

• Engine coolant thermostat housing assembly for cooling system service
• Plastic housing construction with black color
• Gasket included with gasket-type sealing surface
• Three mounting holes for proper attachment
• Opens at 188.0 degrees for temperature control in the cooling circuit
• Two outlet ports for the listed vehicle application
• Direct-fit replacement for Mercedes-Benz B200 thermostat housing service

Detailed Description

This Calorstat thermostat housing assembly, part number TH6991.87J, is specified for 2006-2011 Mercedes-Benz B200 models. It is designed as an engine coolant thermostat housing assembly with a plastic body, integrated gasket, and a 188.0-degree start-to-open temperature rating to regulate coolant flow through the engine cooling system. The housing configuration includes three mounting holes and two outlet ports, matching the listed application requirements. This part cross-references Mercedes-Benz OE numbers A2662030275 and A2662030475 for the same application.

What It Helps Address

• Coolant temperature that stays too low or takes too long to reach operating range
• Thermostat housing leaks at the sealing surface
• Cracked or damaged plastic housing on the cooling system
• Improper coolant routing through the thermostat assembly
• Cooling system service needs on a Mercedes-Benz B200

Installation Notes and Tips

Verify the vehicle application before installation. Replace the thermostat housing only after the engine has cooled completely and the cooling system has been drained safely. Inspect the mating surfaces, hose connections, and mounting points for wear or damage before assembly. Use the included gasket during installation and follow the vehicle service procedure for coolant refill and bleeding.

Quality Assurance

Calorstat cooling system components are built for OE-style fitment and temperature control performance in the specified application. This part number TH6991.87J is intended for 2006-2011 Mercedes-Benz B200 thermostat housing replacement service.