Motorad 601-212 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for Audi Cooling Systems

Motorad 601-212 is an integrated housing thermostat assembly built for OE-style cooling system service. It combines the thermostat, housing, sensor, and seal in one replacement unit for select Audi A4 and Audi A4 Quattro applications with a 212°F opening temperature.

The Integrated Housing Thermostat line from Motorad focuses on direct-fit cooling components made to OEM specifications and processes. This assembly uses a copper case and wax compound for quick reaction to coolant temperature changes, along with an offset design, air relief valve, and OEM-style seals where applicable.

Key Features

• Part number: 601-212
• Integrated thermostat housing assembly
• Opening temperature: 212°F
• Black housing with plastic, stainless steel, and copper construction
• Rubber gasket/seal included
• 3 bolt holes and 3 outlet ports
• Bleeder hole: No
• OEM-style design for select Audi cooling systems

Detailed Description

Motorad 601-212 is an engine coolant thermostat housing assembly for select 2001-2008 Audi A4 and Audi A4 Quattro models. It is engineered as an OE supplier replacement with OEM-quality materials and manufacturing standards, making it a direct option for restoring proper coolant flow control in the engine cooling circuit. The 212°F thermostat specification matches the OE-specified temperature for the listed applications.

Fits 2002-2008 Audi A4, N/A. Fits 2002-2005 Audi A4 Quattro, N/A. Fits 2001 Audi A4, N/A. Fits 2001 Audi A4 Quattro, N/A. This part cross-references Dorman - OE Solutions 902-814 for the same application.

Common Issues This Part Addresses

• Coolant temperature staying too low or running outside the specified range
• Cracked or worn thermostat housing on the original cooling assembly
• Leaking seal at the thermostat housing connection
• Delayed thermostat response during warm-up
• Cooling system service on select Audi A4 and A4 Quattro models

Installation Notes and Tips

Verify engine code, connector style, and housing layout before installation. This assembly includes the thermostat, housing, sensor, and seal where applicable, but does not include bolts or mounting hardware. Clean the mating surfaces thoroughly and inspect the coolant system for contamination before refilling and bleeding the system according to factory procedure.

Quality Assurance

Motorad manufactures this integrated housing thermostat using OEM specifications and OE-supplier quality standards. The copper case and wax compound are selected for responsive temperature control in demanding automotive cooling systems.