MAHLE 075-121-113 D Engine Coolant Thermostat 80°C

The MAHLE 075-121-113 D is a precision-engineered engine coolant thermostat designed to maintain optimal engine operating temperature in Audi, Volkswagen, and Porsche applications. This OEM-quality thermostat regulates coolant flow between the engine and radiator to ensure efficient warm-up and prevent overheating.

Key Features:

• 80°C (176°F) opening temperature for precise thermal management
• Includes sealing O-ring for proper installation
• Direct replacement for OEM part numbers 022121113, 075121113B, 075121113D71, and 075121113E
• Manufactured in Germany to MAHLE Behr quality standards
• Wax pellet design expands when heated to open valve at precise temperature
• Prevents engine overcooling and inefficient fuel mixture when functioning properly

This thermostat blocks coolant flow to the radiator during engine warm-up, allowing the engine to reach optimal operating temperature quickly. Once the coolant reaches approximately 80°C, the thermostat opens to allow coolant circulation through the radiator for effective cooling. Regular thermostat replacement during cooling system service helps prevent engine overheating or prolonged warm-up times caused by stuck thermostats.

Also Known As: TX3080D, TX 30 80D, MAHLE Behr part number 075121113D