Motorad 4820KTFS Engine Coolant Thermostat Housing Assembly

Motorad 4820KTFS Thermostat Housing Kit

Motorad 4820KTFS is an engine coolant thermostat housing assembly kit built to OE specifications for classic Chevrolet cooling systems. It combines a steel, stainless steel, and copper housing with a paper gasket to support accurate coolant temperature control in demanding applications.

With a 192 Deg. F thermostat rating, this Motorad Kit is a direct-fit solution for select Chevrolet Bel Air, Impala, Corvette, and C10/C20/K10/K20 Suburban applications. The 4820KTFS part number is also a useful reference when sourcing an OE-style thermostat housing assembly for vintage Chevrolet cooling service.

Key Features

• Engine coolant thermostat housing assembly with gasket included
• OE supplier manufacturing with OEM-quality materials and processes
• 192 Deg. F thermostat rating for specified cooling-system operation
• Copper case and wax compound for responsive temperature changes
• Silver finish with 2-bolt housing design
• 1 outlet port, 1.61 in outlet diameter, and 2.13 in flange diameter
• Paper gasket/seal material with 1 gasket included

Detailed Description

Motorad 4820KTFS is engineered for classic Chevrolet engines that require a thermostat housing assembly with OE-specified temperature control. The housing is manufactured to OEM specifications and uses materials selected for cooling-system durability, including steel, stainless steel, copper, and paper. Its copper case and wax compound are designed to react quickly to coolant temperature changes, helping maintain stable engine operating temperature in service.

This part number is relevant for Chevrolet Bel Air, Impala, Corvette, and Suburban fitments listed below, including 1955-1965 Bel Air, 1959-1961 Impala, 1956 Corvette, and 1967 C10/C20/K10/K20 Suburban applications. If you are replacing a thermostat housing on a vintage Chevrolet cooling system, 4820KTFS provides an OE-style service part with the correct housing and gasket configuration.

This part cross-references 94820KTFS for the same application.

Common Repair Uses

• Replacing a leaking or corroded thermostat housing
• Restoring proper coolant temperature regulation
• Addressing coolant seepage at the housing-to-engine sealing surface
• Servicing a worn thermostat housing on a classic Chevrolet cooling system
• Correcting temperature-control issues tied to an aging thermostat assembly

Installation Notes and Tips

Verify the flange diameter, outlet diameter, bolt-hole count, and 192 Deg. F temperature rating before installation. Clean the mating surfaces thoroughly, inspect the coolant passage for corrosion or debris, and confirm the gasket seats evenly before tightening the housing. Bolts are not included, so reuse or replace fasteners as needed based on condition and service requirements.

Compatible fitments include 1967 Chevrolet C10 Suburban, 1967 Chevrolet C20 Suburban, 1967 Chevrolet K10 Suburban, 1967 Chevrolet K20 Suburban, 1958-1965 Chevrolet Bel Air, 1955-1956 Chevrolet Bel Air, 1959-1961 Chevrolet Impala, 1957 Chevrolet Bel Air, and 1956 Chevrolet Corvette.

Quality Assurance

Motorad manufactures this thermostat housing assembly with OEM-quality materials and safety standards as an OE supplier. The design follows OEM specifications and processes to support consistent fit and temperature response in classic Chevrolet cooling applications.