Stant 49099 Engine Coolant Thermostat / Water Outlet Assembly

Integrated Thermostat Housing for Audi Cooling Service

Stant 49099 is an engine coolant thermostat and water outlet assembly built with a durable housing for long service life. The thermostat is integrated into the housing, which streamlines replacement on the cooling system and supports a clean OE-style repair.

Compatible With 2005-2010 Audi A4 and 2005-2010 Audi A4 Quattro applications that call for a 180 degree thermostat. This Stant Integrated Thermostat Housing line is focused on direct-fit cooling system service for vehicles that use an integrated thermostat and outlet design.

Key Features

• Integrated thermostat housing assembly for simplified cooling system service
• 180 degree thermostat specification
• Durable housing material for long-lasting use
• Water outlet thermostat housing design for OE-style replacement
• Stant 49099 for select Audi A4 and Audi A4 Quattro models

Detailed Product Overview

Stant 49099 is engineered as an engine coolant thermostat / water outlet assembly for select Audi cooling systems. By combining the thermostat and housing into one assembly, it reduces the number of separate components involved in the repair and helps restore proper coolant flow control. This part number is commonly searched as Stant 49099 thermostat housing and Stant 49099 water outlet thermostat housing for Audi A4 and Audi A4 Quattro service.

Use this integrated thermostat housing when servicing 2005 Audi A4, 2006 Audi A4, 2007-2010 Audi A4, and 2005-2010 Audi A4 Quattro models listed in the fitment data. The 180 degree temperature rating matches the specified OE temperature requirement for these applications.

What This Part Helps Address

• Coolant temperature control concerns tied to a worn thermostat
• Leaks at the thermostat housing or water outlet assembly
• Service issues caused by a separate thermostat and housing design
• Cooling system repairs on Audi A4 and Audi A4 Quattro models with integrated housing
• Replacement needs for a 180 degree thermostat application

Installation Notes and Tips

Verify the OE temperature specification and housing style before installation. Inspect the sealing surfaces and cooling system connections during service, and follow the vehicle manufacturer’s coolant fill and bleed procedure after replacement. This part is listed with seal included in some fitment notes; confirm the exact application details for your vehicle before installation.

Quality Assurance

Stant is known for cooling system components built to meet OE-style service requirements. Part number 49099 is designed for direct replacement use in the specified Audi applications and follows the integrated thermostat housing format used on these vehicles.