Rein CTN0063 Engine Coolant Thermostat

OE-Style Thermostat Insert for Mercedes-Benz C230

The Rein CTN0063 engine coolant thermostat is an OE-quality thermostat insert built for precise cooling system control. It is a direct-fit replacement for select 2003-2005 Mercedes-Benz C230 models and includes a gasket or seal for installation.

With an 88°C start-to-open temperature, this thermostat is calibrated for consistent coolant flow response and stable engine operating temperature. Rein CTN0063 is designed to match the fit, materials, and service life expectations of the original component.

Key Features

• Engine coolant thermostat insert for cooling system service
• Fits 2003-2005 Mercedes-Benz C230
• 88°C start-to-open temperature for controlled coolant circulation
• Gasket or seal included
• OE-quality metals and components for durability
• Rein CTN0063 thermostat insert for direct replacement use

Product Details

Rein Automotive CTN0063 is engineered as an OE-quality thermostat insert for the Mercedes-Benz C230 cooling system. It is temperature calibrated for a precise opening response, helping the engine reach and maintain the proper operating range. The included gasket or seal supports a cleaner thermostat service job, and the insert design follows the original manufacturer’s installation and fit expectations. This part cross-references Mercedes-Benz 2712030575 for the same application.

Common Cooling System Issues

• Engine running cooler or hotter than normal
• Delayed warm-up after cold starts
• Temperature fluctuations during driving
• Coolant flow control problems from a worn thermostat
• Service replacement for a leaking thermostat seal

Installation Notes

Fits 2003-2005 Mercedes-Benz C230. Verify the thermostat housing condition, clean all sealing surfaces, and confirm the correct 88°C specification before installation. Replace coolant as needed and bleed the cooling system according to factory service procedures after installation. Rein CTN0063 is a thermostat insert, so confirm the housing style matches the vehicle application before ordering.

Quality Assurance

Rein Automotive builds this thermostat insert with high-quality metals and components to support durability and service life. The part is temperature calibrated for consistent response and manufactured to OE-quality standards for fit and performance.