Vemo V15-99-2103 Engine Coolant Thermostat

Engine Coolant Thermostat for Volkswagen Applications

Vemo V15-99-2103 is an engine coolant thermostat for Volkswagen cooling system service. It opens at 90°C and is supplied without housing, with a seal, for a direct thermostat replacement in the correct application.

Key Features

• Engine coolant thermostat with 90°C opening temperature
• Housing type: without housing
• Includes seal for installation
• Dimensions: 56 mm length, 53 mm width, 52 mm height
• Lightweight design at 0.100 kg
• Part number: V15-99-2103

Product Details

VEMO V15-99-2103 is built for Volkswagen cooling system repair where thermostat control is needed to regulate coolant flow and engine operating temperature. This thermostat is listed for 2013-2018 Volkswagen Jetta, 2013-2017 Volkswagen Beetle, and 2014-2017 Volkswagen Passat, with additional 2016 Volkswagen Beetle and 2016 Volkswagen Jetta aftermarket fitment notes. This part cross-references OE numbers 06K 121 113 B and 06K 121 113 E for the same application. The Vemo V15-99-2103 thermostat is a practical replacement choice when servicing the cooling system on Volkswagen Jetta, Beetle, or Passat models that use this configuration.

What It Helps Address

• Engine running too cool or too hot
• Delayed warm-up after cold starts
• Temperature fluctuation from a worn thermostat
• Cooling system service when the original thermostat is no longer sealing properly
• Replacement of a thermostat removed during coolant system maintenance

Installation Notes and Tips

Install V15-99-2103 only on the confirmed application and verify the 90°C opening specification before assembly. Because this thermostat is supplied without housing, reuse or replace the housing as required by the vehicle setup. The included seal should be seated correctly to help maintain a proper coolant seal during installation. Always follow the vehicle service procedure for coolant draining, refilling, and bleeding after thermostat replacement.

Quality Assurance

VEMO parts are cataloged for OE-style replacement use in European vehicle cooling systems. Confirm fitment by year, make, model, and engine configuration before installation.