Water Pump Thermostat Housing for Audi A3 A4 A6 VW Golf Passat 1.8 2.0 06L121111

Water Pump Thermostat Housing for Audi and Volkswagen

This water pump thermostat housing with OEM cross-reference 06L121111 routes coolant and mounts the thermostat on 1.8 and 2.0 engines for Audi and Volkswagen models.

Overview

This water pump thermostat housing is a replacement coolant housing that carries the thermostat and seals the cooling circuit on 1.8 and 2.0 TSI and TFSI engines. It restores proper coolant flow and temperature regulation for Audi A3, A4, and A6 and VW Golf and Passat owners. A solid choice for a leaking or cracked plastic housing.

Built For Performance

• Direct replacement for OEM part number 06L121111
• Integrated thermostat housing design
• Heat-resistant construction for turbocharged engines
• Precision sealing surfaces to prevent coolant leaks
• Mounts with factory bolt locations

Fits These Machines

• for Audi A3 1.8 and 2.0
• for Audi A4 1.8 and 2.0
• for Audi A6 1.8 and 2.0
• for Volkswagen Golf 1.8 and 2.0
• for Volkswagen Passat 1.8 and 2.0

On-The-Job Use

• Fixing coolant leaks at the thermostat housing
• Replacing a cracked or warped plastic housing
• Cooling system service on turbocharged 1.8 and 2.0 engines
• Restoring stable engine operating temperature

Specs At A Glance

Good To Know

Q: Should I replace the thermostat when swapping this housing? A: It is wise to fit a fresh thermostat and gasket while the housing is off, since the labor is already done. Using new seals also lowers the chance of a repeat leak.

Q: Will I need to bleed the cooling system after installation? A: Yes, these engines need the cooling system bled to remove trapped air after housing replacement. Run the engine with the heater on and top off coolant as the level settles.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.