Fel-Pro 35004 Engine Coolant Outlet Gasket - Lower

Fel-Pro 35004 Engine Coolant Outlet Gasket

Fel-Pro 35004 is an engine coolant outlet gasket built for Ford and Mercury applications that use a 2-1/8 inch inside diameter sealing surface. It is a direct-fit sealing solution for restoring the coolant outlet connection on classic Ford F-100, F-250, F-350, Mustang, Thunderbird, and related Mercury models.

• Part number: 35004
• 1.890 inch inside diameter listed in the product attributes
• Engine coolant outlet gasket for cooling system sealing
• Application-specific sealing material for a precise fit
• Compatible with select 1961-1976 Ford and Mercury vehicles

Sealing Performance for Classic Ford Cooling Systems

Fel-Pro 35004 is made for the coolant outlet connection where a stable seal is needed to keep the cooling system closed and functioning properly. Fel-Pro gaskets are engineered with application-specific materials to deliver vehicle sealing that professionals rely on, and this part cross-references Dorman - HELP 30904 for the same application. It is a practical choice for restoring the coolant outlet seal on a 1968-1976 Ford F-100 or a 1961-1966 Ford Thunderbird, as well as other listed Ford and Mercury models.

Vehicle Fitment

• Fits 1968-1976 Ford F-100, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1975-1976 Ford F-150, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1968-1976 Ford F-250, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1968-1976 Ford F-350, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1967 Ford LTD, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Ford Mustang, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Ford Thunderbird, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Mercury Capri, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Mercury Colony Park, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Mercury Cougar, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Mercury Marquis, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1967 Mercury Villager, N/A. For models up to 12/01/1966 with 2-1/8 inch inside diameter, compatible with Engine Coolant Outlet Gasket.
• Fits 1965-1966 Ford LTD, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1961-1966 Ford Thunderbird, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1966 Mercury Capri, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1961-1966 Mercury Colony Park, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1963-1966 Mercury Marauder, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.
• Fits 1964-1966 Mercury Villager, N/A. Engine Coolant Outlet Gasket with 2-1/8 inch Inside Diameter.

Common Uses

• Replacing a leaking coolant outlet gasket on Ford F-100, F-250, or F-350 trucks
• Restoring the seal at the thermostat housing or coolant outlet connection
• Addressing coolant seepage around the outlet flange
• Repairing a damaged or flattened gasket surface during cooling system service
• Supporting maintenance on classic Ford Mustang, Thunderbird, and Mercury cooling systems

Installation Notes and Quality

Clean both mating surfaces thoroughly before installation and verify the outlet opening matches the listed 1.890 inch inside diameter specification. Check the flange for corrosion, warping, or old gasket residue before assembly so the new seal can seat evenly. Fel-Pro uses application-specific sealing materials to support consistent fit and durability in professional repair work.