Motorad 838-235 Engine Coolant Thermostat

Engine Coolant Thermostat for Audi and Volkswagen

Motorad 838-235 is a standard engine coolant thermostat built to OE specifications for precise coolant temperature control. It uses OEM-quality materials, a copper case, and a wax compound that reacts quickly to coolant temperature changes for consistent operation in demanding cooling systems.

Compatible with select Audi A3, A4, A5, A6, Q3, Q5, Q7, S3, TT Quattro, and Volkswagen Atlas, Tiguan, GTI, Passat, and other listed applications, this thermostat includes the seal and uses an O-ring seal type for a direct replacement service fit.

Key Features

• Motorad Standard line engine coolant thermostat
• Part number 838-235
• Start-to-open temperature: 235°F
• OEM specification manufacturing and materials
• Copper case with wax compound for responsive temperature control
• Gasket or seal included
• O-ring seal type
• No jiggle pin weep hole

Product Details

The Motorad Standard line focuses on OE-style cooling system service parts built to match factory specifications and processes. This thermostat is engineered for vehicles that require a 235-degree opening temperature, helping maintain proper engine operating temperature in Audi and Volkswagen cooling systems. The compact housing dimensions and standard design support accurate fitment in the listed applications.

This part cross-references Dorman - HELP 83835 for the same application.

Common Problems This Part Can Address

• Engine running too cool or too hot due to thermostat wear
• Delayed coolant flow control from a sticking thermostat
• Temperature fluctuation in the cooling system
• Check engine concerns related to thermostat performance
• Cooling system service needs on Audi and Volkswagen models

Installation Notes and Tips

• Verify the 235°F temperature specification before installation.
• Confirm the seal type and housing style match the original part.
• Inspect the cooling system for contamination, leaks, or damaged sealing surfaces during service.
• Use the listed fitment to confirm application by year, make, and model before ordering.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards, Motorad 838-235 is built to meet factory-style cooling system requirements for reliable thermostat operation.