Motorad TA3003 Engine Coolant Thermostat Housing Assembly

Motorad TA3003 Thermostat Assembly

The Motorad TA3003 thermostat assembly is built for precise coolant temperature control in Volkswagen cooling systems. It combines the thermostat, housing components, and seals in an OE-style design for direct replacement service on select Volkswagen Jetta, Beetle, Golf, Golf SportWagen, and Passat applications.

Motorad’s Thermostat Assembly line focuses on OE supplier standards and OEM specifications, with materials and processes selected for consistent fit and temperature response. This TA3003 unit uses a 176°F thermostat setting, a plastic housing, a copper case, and wax compound construction to react quickly to coolant temperature changes.

Key Features

• 176°F thermostat temperature for OE-specified cooling control
• Plastic housing with black finish
• Gasket or seal included for service replacement
• Bleeder hole included for air relief during filling
• 2 mounting holes and 3 outlet ports
• Offset design with OEM-style seals where applicable
• OE supplier manufacturing approach for consistent fit and function

Detailed Description

Motorad TA3003 is an engine coolant thermostat housing assembly designed for Volkswagen cooling system service where the thermostat and housing are serviced together. The 176°F calibration supports factory-style coolant regulation, while the included seals and air relief feature help simplify installation and bleeding. This part cross-references Dorman - OE Solutions 902-5156 for the same application.

Compatible With 2005-2014 Volkswagen Jetta, N/A; 2006-2010 Volkswagen Beetle, N/A; 2011-2014 Volkswagen Golf, N/A; 2012-2014 Volkswagen Passat, N/A; 2011-2013 Volkswagen Golf SportWagen, N/A; and 2018 Volkswagen Jetta, N/A. The TA3003 is also listed for 2012-2014 Volkswagen Beetle, N/A.

Common Repair Uses

• Restoring proper engine operating temperature
• Addressing coolant temperature fluctuation
• Replacing a leaking thermostat housing or seal
• Correcting slow warm-up or overheating concerns tied to thermostat control
• Servicing a worn or cracked plastic housing

Installation Notes and Tips

Drain coolant before removal, clean the mating surfaces thoroughly, and verify the bleeder hole is positioned correctly during refill. Use the included gasket or seal and confirm all hose connections are seated before refilling and bleeding the system. Always match the 176°F specification to the vehicle’s OE requirement.

Quality Assurance

Manufactured to OEM specifications and processes by an OE supplier, this thermostat assembly is built with OEM-quality materials and safety standards for demanding automotive cooling systems. The copper case and wax compound are used to support responsive temperature control in normal service.