Four Seasons 86220 Engine Coolant Thermostat / Water Outlet Assembly

Engine Coolant Thermostat / Water Outlet Assembly

Four Seasons Water Outlet 86220 is an aluminum engine coolant thermostat and water outlet assembly built for direct-fit cooling system service. It includes the thermostat and gasket/seal, and it meets or exceeds OEM requirements for the listed applications.

Use this Four Seasons 86220 water outlet assembly when servicing cooling system leaks or thermostat-related temperature control concerns on select Chevrolet, GMC, Cadillac, Buick, Pontiac, Hummer, and Corvette applications.

Key Features

• Aluminum housing for cooling system durability
• Thermostat included for complete outlet service
• Gasket or seal included
• Single outlet design
• Meets or exceeds OEM specifications
• Four Seasons Water Outlet product line
• Part number 86220 for catalog and interchange lookup

Product Details

This engine coolant components assembly is built in an outlet style with a thermostat included, making it a practical replacement for vehicles that use a combined thermostat housing and water outlet design. The aluminum construction supports reliable fitment in demanding cooling systems, while the included seal helps simplify reassembly. Four Seasons 86220 also cross-references Febi-Bilstein 34702 for the same application.

Compatible vehicle coverage includes applications such as Fits 2004-2007 Chevrolet Silverado 1500, Water Outlet; Fits 2004-2007 GMC Sierra 1500, Water Outlet; and Fits 2004-2006 Cadillac Escalade, Water Outlet. Additional coverage extends across select Chevrolet Corvette, Pontiac Grand Prix, Buick LaCrosse, and GMC Yukon models, depending on year and engine configuration. The part number 86220 is commonly searched for cooling repair on these platforms.

Common Repair Uses

• Coolant seepage at the thermostat housing or outlet
• Engine temperature fluctuations caused by a worn thermostat
• Cracked or corroded water outlet housing
• Failed gasket or seal at the coolant outlet
• Cooling system service on GM truck and performance applications

Installation Notes

Verify inlet diameter, bolt-hole spacing, and housing style before installation. Clean the mating surfaces thoroughly, inspect the coolant passages for corrosion or debris, and replace coolant according to the vehicle service procedure. Bleeder screw is not included, so confirm whether your application requires a separate bleed point during service.

Quality Assurance

Four Seasons 86220 is built to meet or exceed OEM specifications for the listed applications, supporting accurate replacement fitment and dependable cooling system service.