Calorstat TH6513.71J Engine Coolant Thermostat

Engine Coolant Thermostat for Mercedes-Benz AMG

Calorstat TH6513.71J is an engine coolant thermostat assembly with an aluminum housing, built for precise coolant flow control in select Mercedes-Benz applications. It features a 71 C / 160 F opening temperature, a silver finish, and an integrated gasket and rubber seal for a direct-fit cooling system service part.

Key Features

• Engine coolant thermostat with aluminum housing
• Opening temperature: 71 C / 160 F
• Silver housing finish
• 2 bolt holes for mounting
• Gasket included with rubber seal
• Jiggle pin weep hole for air bleeding during service
• Height between flanges: 1.33

Detailed Description

Calorstat TH6513.71J is engineered for Mercedes-Benz cooling system service where stable coolant regulation is critical. The aluminum housing provides a durable mounting surface, while the gasket and rubber seal support a secure seal at the thermostat interface. The jiggle pin weep hole helps purge trapped air during filling and service, which is important for consistent coolant circulation and temperature control. This part number, TH6513.71J, is listed for a range of Mercedes-Benz models including G55 AMG, SL55 AMG, CL55 AMG, CLS55 AMG, E55 AMG, R500, S55 AMG, CL500, G500, SL500, C32 AMG, SLK32 AMG, SLK320, E500, C320, and E320.

Compatible With Mercedes-Benz applications such as 2006-2011 G55 AMG, 2003-2008 SL55 AMG, and 2003-2006 E55 AMG, this thermostat is specified with a 71 C / 160 F opening temperature for the listed vehicles. The TH6513.71J part number is also associated with additional Mercedes-Benz fitments across 1998-2011 model years.

What It Helps Address

• Engine running too cool or too hot due to thermostat wear
• Delayed coolant circulation after startup
• Temperature fluctuation from a sticking thermostat
• Coolant seepage at the thermostat housing seal surface
• Air pockets in the cooling system after service

Installation Notes and Tips

• Verify the housing style, bolt hole count, and flange height before installation.
• Clean the mating surfaces thoroughly before fitting the gasket and seal.
• Orient the jiggle pin weep hole as required by the cooling system layout.
• Refill and bleed the cooling system carefully to remove trapped air.
• Confirm the opening temperature matches the vehicle specification before service.

Quality Assurance

Calorstat cooling system components are built for service applications that require accurate temperature regulation and dependable sealing. TH6513.71J is a thermostat assembly with integrated housing and sealing components for the listed Mercedes-Benz fitments.