Four Seasons 85221 Engine Coolant Water Outlet

Engine Coolant Water Outlet for GM Applications

Four Seasons Water Outlet 85221 is an aluminum engine coolant water outlet built for direct replacement service on select GM vehicles. It includes the gasket or seal and is specified as a thermostat-free outlet, making it a straightforward choice for cooling system repairs that require a precise OE-style fit.

Fits 1987-1993 Chevrolet S10, N/A; 1991-1993 GMC Sonoma, N/A; 1987-1990 Chevrolet Astro, N/A; 1987-1990 GMC S15, N/A; 1987-1990 GMC Safari, N/A; 1987-1988 Chevrolet S10 Blazer, N/A; and 1987-1988 GMC S15 Jimmy, N/A.

Key Features

• Four Seasons Water Outlet line
• Part number 85221
• Aluminum construction for cooling system service
• Gasket or seal included
• Outlet style without thermostat
• Inlet diameter: 1.31 in.
• Maximum height: 4.05 in.
• Bolt hole center to bolt hole center: 2.91 in. and 3.000 in.
• Mounting flange width: 0.44 in.
• Meets or exceeds OEM requirements

Product Details

Four Seasons 85221 is an engine coolant water outlet designed for vehicles that use a thermostat separate from the outlet housing. The aluminum body supports reliable coolant routing, while the included gasket or seal helps complete the sealing surface during replacement. This part cross-references Motorad CH3035 for the same application. For shoppers searching for a Chevrolet S10 water outlet, GMC Sonoma coolant outlet, or a replacement water outlet for Chevrolet Astro and GMC Safari models, this part number 85221 is the direct reference to verify.

Common Repair Uses

• Replacing a leaking coolant outlet at the engine connection
• Restoring proper coolant flow after corrosion or housing wear
• Addressing coolant seepage around the sealing surface
• Repairing a damaged outlet flange or bolt mounting area
• Servicing cooling system components on Chevrolet S10 and GMC Sonoma applications

Installation Notes and Tips

Confirm the inlet diameter, bolt-hole spacing, and outlet style before installation. Clean the mating surfaces thoroughly, inspect the hose connection for wear, and verify that the thermostat is not required in this housing because this unit is supplied without one. Use the included gasket or seal during assembly and torque fasteners evenly to help maintain a proper seal.

Quality Assurance

Four Seasons lists this water outlet as meeting or exceeding OEM requirements, supporting direct replacement use in the specified applications. The aluminum construction and included sealing component are selected for cooling system service where accurate fit and dependable sealing are important.