Four Seasons 86319 Engine Coolant Thermostat Housing

Thermostat Housing for Audi Cooling Repair

Four Seasons 86319 is an integrated engine coolant thermostat housing built for select Audi applications. It combines the thermostat housing and thermostat in one assembly, with a gasket or seal included for a cleaner cooling system service.

Compatible with Audi A6 Quattro, A7 Quattro, A8 Quattro, and Q7 applications, this Four Seasons thermostat housing is a direct-fit cooling component for vehicles that need precise coolant flow control. The Four Seasons thermostat housing line is backed by more than 50 years of mobile A/C experience and is engineered and tested for dependable operation.

Key Features

• Part number: 86319
• Integrated thermostat housing design
• Thermostat included
• Gasket or seal included
• Plastic construction
• Inlet diameter: 1.128 in.
• Mounting flange width: 0.552 in.
• Overall height: 3.287 in.
• Engine coolant components replacement part

Detailed Description

Four Seasons 86319 is an integrated thermostat housing for engine coolant service, designed to restore proper thermostat function and coolant routing in the cooling system. The plastic housing is supplied with the thermostat installed and includes the gasket or seal, helping simplify replacement on the specified Audi platforms. This part cross-references URO 06E121111AT for the same application.

Use Four Seasons 86319 when servicing Audi cooling systems that require an integrated thermostat housing assembly. It is listed for 2015-2018 Audi A8 Quattro, 2016-2018 Audi A6 Quattro, 2016-2018 Audi A7 Quattro, 2017 Audi Q7, and 2018-2019 Audi Q7. For buyers searching for an Audi A6 Quattro thermostat housing, Audi A7 Quattro thermostat housing, or Audi Q7 thermostat housing, this part number 86319 matches those confirmed applications.

What It Helps Fix

• Coolant temperature regulation issues caused by a worn thermostat assembly
• Leaks at the thermostat housing or seal area
• Overheating from restricted coolant flow control
• Temperature fluctuations from a failing integrated thermostat housing
• Service replacement for cracked or aged plastic coolant components

Installation Notes and Tips

Confirm the OE-style part number and vehicle application before installation. Inspect the mating surfaces, coolant passages, and adjacent hoses for wear or contamination during service. Because this is an integrated thermostat housing, verify that the thermostat orientation and seal seating match the original configuration on the vehicle.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation. The brand also notes more than 50 years of mobile A/C experience behind its product development and manufacturing standards.