Calorstat TH7163.84J Engine Coolant Thermostat

Engine Coolant Thermostat for Mercedes-Benz V8 Models

Calorstat TH7163.84J is a standard engine coolant thermostat built for precise temperature control in select Mercedes-Benz applications. It opens at 183.0°F and includes a gasket with rubber seal material for a direct-fit cooling system service on 1981-1985 Mercedes-Benz 380SL, 380SEL, 380SEC, 380SE, and 500SEL models.

Key Features

• Part number: TH7163.84J
• Engine coolant thermostat, standard type
• Start-to-open temperature: 183.0°F
• Gasket or seal included; gasket seal type
• Rubber seal material
• Locating lug for proper positioning
• By-pass valve diameter: 43.0
• Valve-seat diameter: 66.8
• Sealing flange outside diameter: 2.62

Detailed Description

This Calorstat thermostat is engineered to regulate coolant flow based on engine temperature, helping the cooling system maintain stable operating conditions. The TH7163.84J uses a standard thermostat design with a 183.0°F opening point, a rubber gasket seal, and a locating lug to support correct installation alignment. It is a direct service part for Mercedes-Benz 380SL, 380SEL, 380SEC, 380SE, and 500SEL vehicles in the listed model years. This part cross-references Mercedes-Benz OE numbers such as A0032038275 and A1162000215 for the same application.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant circulation during warm-up
• Temperature fluctuation from a sticking thermostat valve
• Cooling system service needs on Mercedes-Benz 380SE and 380SL models
• Replacement of a thermostat with degraded sealing surfaces

Installation Notes and Tips

Verify the thermostat housing and sealing surfaces are clean before installation. Match the locating lug to the housing orientation and confirm the gasket seats evenly to prevent coolant leaks. Always refill and bleed the cooling system according to the vehicle service procedure after replacement. Fits 1984-1985 Mercedes-Benz 380SE, N/A. Fits 1981-1985 Mercedes-Benz 380SL, N/A. Fits 1984-1985 Mercedes-Benz 500SEL, N/A. Fits 1982-1983 Mercedes-Benz 380SEC, N/A. Fits 1981-1983 Mercedes-Benz 380SEL, N/A.

Quality Assurance

Calorstat is listed as an OE supplier to Mercedes-Benz in the provided fitment notes, supporting application-specific design and serviceability for these vehicles. Part number TH7163.84J is specified for the listed Mercedes-Benz cooling system applications.