Stant 48049 Engine Coolant Thermostat

OE Type Thermostat for Audi and Volkswagen

Stant 48049 is an engine coolant thermostat built to OE-type specifications for a direct-fit cooling system service. It opens at 189 degrees Fahrenheit and uses a stainless steel assembly for smooth operation and consistent temperature control in the engine cooling circuit.

Key Features

• OE Type Thermostat from Stant’s OE Type Thermostat line
• 189 degrees Fahrenheit opening temperature
• Original equipment design for factory-style fit and function
• Durable construction for long service life
• Stainless steel assembly engineered for smooth performance
• Seal included
• Bypass plate diameter: 1.37 in.
• Flange diameter: 2.63 in.
• Height from flange to bottom: 0.984 in.
• Height from flange to top of bridge: 1.02 in.

Detailed Description

Stant 48049 is an OE-style engine coolant thermostat designed for Audi and Volkswagen cooling systems that call for a 189 degree thermostat. The original equipment design helps maintain proper coolant flow control, while the stainless steel assembly supports smooth, reliable movement during temperature changes. This part is a practical choice for service on applications such as Audi A4, Audi A6 Quattro, Volkswagen Passat, and Volkswagen Jetta models that require the specified OE temperature.

This part cross-references part number 48349 for the same application.

What It Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuations caused by a worn thermostat
• Cooling system service on Audi and Volkswagen vehicles with OE temperature requirements
• Reduced heater performance from improper coolant regulation
• Thermostat replacement during cooling system maintenance

Installation Notes and Tips

Verify the thermostat opening temperature and housing dimensions before installation. Confirm seal condition and mating surfaces are clean to support proper sealing. This thermostat is listed for multiple Audi and Volkswagen applications, including 1995-2005 Volkswagen Golf, 1994-2004 Volkswagen Jetta, 1995-2004 Audi A6 Quattro, and 2001-2005 Audi Allroad Quattro. Always match the vehicle’s OE specification before service.

Quality Assurance

Stant designs this OE Type Thermostat with an original equipment-style layout and durable materials for long-term use. The stainless steel assembly is engineered to promote smooth performance in normal cooling system operation.