Motorad 2034-180 Engine Coolant Thermostat

Motorad 2034-180 High Flow Thermostat

The Motorad 2034-180 is a 180°F engine coolant thermostat built with OEM-quality materials and OE-supplier manufacturing standards. It is designed for steady coolant temperature control in applications such as Volkswagen Jetta, Golf, and Passat, along with select Audi, Volvo, Porsche, and Ford models.

Motorad’s High Flow line focuses on responsive coolant regulation for demanding cooling systems. The 2034-180 uses a copper case and wax compound for quick reaction to temperature changes, and it includes an offset design, air relief valve, and OEM-style seals where applicable.

Key Features

• 180°F engine coolant thermostat for temperature control
• High Flow design for demanding automotive cooling systems
• Copper case and wax compound for rapid response to coolant temperature changes
• Offset design with air relief valve
• Jiggle pin weep hole included
• Sealing flange outside diameter: 2.12 in.
• Bypass diameter: 1.38 in.
• Bypass length: 1.23 in.
• Flange thickness: 0.05 in.
• Gasket or seal not included

Detailed Description

Motorad Part Number 2034-180 is an engine coolant thermostat engineered to open at 180°F and maintain proper operating temperature across a wide range of import and domestic vehicles. This part cross-references Bosch 15378 for the same application. The OE-style construction and copper/wax thermal element support consistent temperature response, while the air relief valve and jiggle pin weep hole help manage trapped air during coolant circulation.

Fits 1980-2004 Volkswagen Jetta, N/A; Fits 1985-2006 Volkswagen Golf, N/A; Fits 2004-2005 Volkswagen Passat, N/A; Fits 2000-2004 Volvo S40, N/A; Fits 1997 Ford F-150, N/A. Additional coverage includes select Audi, Porsche, Ford, Mercury, and Volvo applications listed in the fitment data. Motorad 2034-180 is a direct replacement choice for drivers servicing cooling systems that require a 180°F thermostat.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant flow control after warm-up
• Temperature fluctuation caused by a sticking thermostat
• Cooling system service on Volkswagen Jetta, Golf, and Passat applications
• Replacement of an OE-style 180°F coolant thermostat

Installation Notes and Tips

Verify the 180°F temperature rating, bypass dimensions, and sealing flange diameter before installation. The gasket or seal is not included, so confirm the required sealing components for the vehicle and housing. Inspect the cooling system for contamination, trapped air, and worn seals before installing the new thermostat.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and processes, this thermostat is built to meet safety standards and the demands of modern cooling systems. The copper case and wax compound are selected for reliable thermal response under normal service conditions.