Aftermarket VAG06J121121#F Thermostat Housing Assembly

The Aftermarket VAG06J121121#F is an engine coolant thermostat housing designed as a replacement for Volkswagen and Audi vehicles equipped with 2.0L TSI/TFSI engines. This plastic flange houses the thermostat and connects to the water pump assembly, serving as a critical component in the engine's cooling system.

Key Features:

• Direct replacement for OEM part number 06J121121
• Designed for 2.0L TSI/TFSI turbocharged engines
• Compatible with BEHR water pump systems
• Includes mounting flange and connections (thermostat sold separately)
• Durable plastic construction for reliable coolant flow

After thousands of miles and years of hot coolant contact, plastic coolant components can degrade and become brittle, making this housing a common replacement part. A failed thermostat housing will likely result in a cooling system leak or cause the engine to overheat. This aftermarket replacement offers a cost-effective solution to restore proper cooling system function and prevent coolant leaks.

Important: Thermostat not included with housing. Verify part number compatibility before ordering, as multiple thermostat housing designs exist for VW/Audi vehicles. This part is specifically for TSI/TFSI engines only.