Four Seasons 85161 Engine Coolant Water Outlet

Engine Coolant Water Outlet for GM Applications

Four Seasons Water Outlet 85161 is an aluminum engine coolant outlet built for direct replacement service on select GM vehicles. It includes the gasket or seal and is supplied in a thermostat-free style for applications that use a separate thermostat housing arrangement.

Fits 1991-1993 Buick Roadmaster, N/A; Fits 1993 Cadillac Commercial Chassis, N/A; Fits 1993 Cadillac Fleetwood, N/A; Fits 1991-1993 Chevrolet Caprice, N/A; Fits 1991-1993 Chevrolet Commercial Chassis, N/A; Fits 1991-1992 Oldsmobile Custom Cruiser, N/A.

Key Features

• Aluminum construction for coolant system durability
• Gasket or seal included for sealing at installation
• Thermostat not included; outlet only
• Meets or exceeds OEM requirements
• Engine coolant components water outlet design
• Inlet diameter: 1.054 in.
• Bolt hole center to bolt hole center: 3.2 in. and 3.250 in.
• Maximum height: 2.089 in.
• Mounting flange width: 0.444 in.

Detailed Description

Four Seasons 85161 is a replacement engine coolant water outlet for select Buick, Cadillac, Chevrolet, and Oldsmobile applications. The aluminum body supports reliable coolant routing, while the included gasket or seal helps create a proper seal at the mating surface. This outlet is specified as a thermostat-free design, making it the correct choice for vehicles that use a separate thermostat assembly elsewhere in the cooling system. This part cross-references Motorad CH3023 for the same application.

For buyers searching for a water outlet for 1991-1993 Buick Roadmaster, 1991-1993 Chevrolet Caprice, or 1991-1992 Oldsmobile Custom Cruiser, Four Seasons part number 85161 provides a direct-fit replacement option. It also serves 1993 Cadillac Fleetwood, 1993 Cadillac Commercial Chassis, and 1991-1993 Chevrolet Commercial Chassis applications listed in the fitment data.

What It Helps Address

• Coolant leaks at the outlet or sealing surface
• Cracked or corroded original coolant outlet housing
• Improper coolant flow caused by a damaged outlet
• Service replacement needs during cooling system repair
• Fitment issues when replacing a worn OEM water outlet

Installation Notes and Tips

Confirm the inlet diameter, bolt spacing, and mounting flange dimensions against the original part before installation. Clean the mating surfaces thoroughly, inspect the thermostat location in the vehicle’s cooling system, and replace any damaged hoses or clamps during service. Because this is an outlet without a thermostat, verify that your application uses a separate thermostat arrangement before ordering.

Quality Assurance

Four Seasons 85161 is listed as meeting or exceeding OEM requirements for the specified applications. The aluminum construction and included gasket or seal support a proper replacement installation on compatible GM cooling system service jobs.