Victor Reinz 71-13863-00 Engine Coolant Thermostat Housing Gasket

OE-Style Thermostat Housing Seal

Victor Reinz 71-13863-00 is an engine coolant thermostat housing gasket built for a precise seal at the thermostat housing. Made from fiber with a 2.221 inside diameter, 0.020 thickness, and two mounting holes, it is suited for service work where accurate fit and consistent sealing matter.

Compatible with select Ford and Mercury applications, including 1954-1965 Ford F-100, F-250, and F-350, plus 1955-1958 Ford Thunderbird and 1957-1962 Mercury Colony Park. The Victor Reinz 71-13863-00 gasket is a direct-fit sealing component for classic cooling system repairs.

Key Features

• Engine coolant thermostat housing gasket for cooling system sealing
• Fiber construction for a traditional gasket application
• 2.221 inside diameter for the specified housing interface
• 0.020 thickness for controlled compression at the seal surface
• Two mounting holes with 0.342 diameter
• OE-quality engineering from Victor Reinz, an original equipment supplier

Detailed Description

Victor Reinz 71-13863-00 is designed for thermostat housing service on vintage Ford and Mercury vehicles where the gasket must seal coolant passages cleanly and maintain alignment at the housing flange. The fiber material, measured thickness, and mounting-hole layout support a proper fit on the intended application. This part cross-references CSF 10676 and MAHLE C25907 for the same application.

Use this gasket when servicing cooling system leaks on 1954-1965 Ford F-100, 1954-1965 Ford F-250, 1954-1965 Ford F-350, 1955-1958 Ford Thunderbird, and 1957-1962 Mercury Colony Park. The part number 71-13863-00 is a practical reference for sourcing the correct thermostat housing gasket during restoration or maintenance work.

What It Helps Solve

• Coolant seepage at the thermostat housing
• Sealing issues after thermostat service
• Flange mismatch from worn or damaged old gaskets
• Leak paths caused by compressed or deteriorated gasket material
• Cooling system maintenance on classic Ford and Mercury engines

Installation Notes and Tips

Clean both mating surfaces before installation and remove all traces of old gasket material, corrosion, and coolant residue. Verify the housing and flange are flat and aligned before tightening. Follow the vehicle service manual for torque sequence and coolant refill procedures to help maintain a reliable seal.

Quality Assurance

Victor Reinz supplies OE-quality gasket technology and sealing engineering, with broad coverage for foreign and domestic vehicles. The 71-13863-00 part number reflects a gasket built to the dimensional requirements of the listed thermostat housing applications.