Four Seasons 84818 Engine Coolant Water Outlet

Engine Coolant Water Outlet for Ford and Mercury

Four Seasons 84818 is an engine coolant water outlet for select Ford and Mercury applications. It is built with aluminum and cast iron construction, includes a gasket or seal, and is specified as an outlet without a thermostat.

Use this Four Seasons Water Outlet when replacing a worn or leaking coolant outlet on classic Ford F-100, F-250, F-350, Mustang, LTD, and Thunderbird applications, as well as select Mercury Colony Park, Cougar, Marauder, Marquis, Montego, and Villager models.

Key Features

• Part number 84818
• Engine coolant water outlet, outlet style
• Aluminum and cast iron construction
• Gasket or seal included
• Thermostat not included
• Meets or exceeds OEM requirements
• Inlet diameter: 1.510 in.
• Bolt hole center to bolt hole center: 3.52 in. and 3.563 in.
• Mounting flange width: 0.580 in.
• Maximum height: 2.760 in.

Product Details

Four Seasons 84818 is part of the Water Outlet line within the thermostat and housing category. This engine coolant component is designed for direct replacement service on older Ford and Mercury cooling systems where the outlet housing routes coolant through the engine and radiator circuit. The part is listed as an OE-level replacement and is cross-referenced to Anchor 9520 and Gates 31409 for the same application. Four Seasons 84818 also appears under interchange references including 200108, 248340, 277875, 602128, 814818, 1510173, 6051055, 7184818, 9021024, 11184818V, 19193834, 89000311, AO4099, C4TZ8592C, C7AZ8592A, CWK814818, RH2, W1431, W4099, and WPR5417L.

What It Helps Address

• Coolant leakage at the water outlet housing
• Corrosion or cracking in the original outlet
• Improper sealing at the gasket surface
• Cooling system service on thermostat-housing related repairs
• Replacement of a worn outlet on classic Ford and Mercury engines

Installation Notes and Tips

• Confirm inlet diameter, bolt spacing, and mounting flange dimensions before installation.
• Transfer or install the thermostat separately, since this outlet is supplied without one.
• Clean the mating surfaces thoroughly before fitting the included gasket or seal.
• Check hoses, clamps, and adjacent cooling components for wear while the system is open.
• Refill and bleed the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Four Seasons 84818 is manufactured to meet or exceed OEM requirements for the listed applications. It is cataloged for fitment on 1960-1964 and 1968-1976 Ford F-100, F-250, and F-350, 1967-1971 Ford LTD, 1968-1970 Ford Mustang, 1968 Ford Thunderbird, 1967-1970 Mercury Cougar, 1967-1970 Mercury Marquis, 1967-1970 Mercury Villager, 1967-1970 Mercury Colony Park, 1969-1970 Mercury Marauder, and 1968-1969 Mercury Montego.