Four Seasons 84990 Engine Coolant Water Outlet

Engine Coolant Water Outlet for GM Applications

Four Seasons Water Outlet 84990 is an engine coolant water outlet built for direct replacement service on select Buick, Chevrolet, Oldsmobile, and Pontiac applications. It is an aluminum outlet with a gasket or seal included, and it is supplied in a thermostat-free style for vehicles that use a separate thermostat housing arrangement.

Key Features

• Aluminum construction for cooling-system service
• Gasket or seal included for installation
• Outlet style, w/o thermostat
• Meets or exceeds OEM requirements
• Inlet diameter: 0.973 in.
• Maximum height: 1.694 in.
• Bolt hole center to bolt hole center: 2.719 in. and 2.73 in.
• Mounting flange width: 0.397 in.

Product Details

This Four Seasons Water Outlet line part is engineered as an OE-style engine coolant component for cooling-system repair on older GM vehicles. Part number 84990 is designed for applications that use a separate thermostat and a compact outlet layout, with aluminum construction and OE-matching fitment dimensions. This part cross-references Gates 31630 and Motorad CH3021 for the same application.

Compatible With select Buick Century, Buick Regal, Buick LeSabre, Chevrolet Monte Carlo, Chevrolet El Camino, Chevrolet Caprice, Chevrolet Impala, Oldsmobile Cutlass Supreme, Oldsmobile Delta 88, Oldsmobile Toronado, Pontiac Grand Prix, Pontiac Bonneville, and Pontiac Parisienne applications. Fits 1980-1988 Buick Century, Buick Regal, Buick LeSabre, Chevrolet Monte Carlo, Chevrolet El Camino, Chevrolet Caprice, Chevrolet Impala, Oldsmobile Cutlass Supreme, Oldsmobile Delta 88, Oldsmobile Toronado, Pontiac Grand Prix, Pontiac Bonneville, and Pontiac Parisienne, N/A, with the exact year and emissions configuration listed in the fitment table.

Common Cooling-System Issues It Can Address

• Coolant leakage at the outlet housing
• Corrosion or cracking in the original water outlet
• Improper sealing at the gasket surface
• Fitment problems from worn or distorted OE parts
• Cooling-system service needs during thermostat-area repairs

Installation Notes and Tips

Verify inlet diameter, bolt spacing, and mounting flange dimensions before installation. Clean the mating surfaces thoroughly, inspect the hose connection for wear, and replace the thermostat separately if your application requires one, since this outlet is supplied without a thermostat. Confirm the exact vehicle year, make, model, and emissions configuration before ordering.

Quality Assurance

Four Seasons lists this water outlet as meeting or exceeding OEM requirements. The aluminum construction and included gasket or seal support a proper cooling-system repair when installed on the correct application.