Motorad 4997KTFS Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Motorad 4997KTFS is an engine coolant thermostat housing assembly built for OE-style cooling system service. It combines the housing, thermostat, and seal in a fitment-specific kit for vehicles that need a 195°F temperature rating and a direct replacement cooling solution.

Compatible with Chevrolet S10, GMC Sonoma, Isuzu Hombre, Buick Century, Chevrolet Corsica, Oldsmobile Cutlass Ciera, Chevrolet Cavalier, Pontiac Sunfire, and Chevrolet Lumina applications listed below, this Motorad Kit line part is made to meet OEM specifications and processes. The copper case and wax compound support quick thermostat response as coolant temperature changes.

Key Features

• Engine coolant thermostat housing assembly with integrated thermostat and seal
• 195°F temperature rating for OE-specified cooling operation
• Housing construction uses steel, stainless steel, copper, and paper materials
• Black and silver finish with 3 bolt holes
• 1.73 in flange diameter and 1.3 in outlet diameter
• Gasket or seal included; paper gasket material
• Motorad part number 4997KTFS

Detailed Description

Motorad 4997KTFS is engineered as a replacement thermostat housing assembly for vehicles that require a 195°F thermostat and matching housing geometry. The OE-supplier manufacturing approach uses OEM-quality materials and production standards to support consistent coolant flow control and temperature regulation. This makes it a practical choice for Chevrolet S10 and GMC Sonoma cooling system service, as well as the other listed Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac applications.

This Motorad Kit product line focuses on complete, application-specific cooling components that simplify parts matching for thermostat service. The copper case and wax compound help the thermostat react promptly to coolant temperature changes, while the included seal supports proper housing sealing at the engine coolant outlet.

This part cross-references 94997KTFS for the same application.

What It Helps Address

• Engine running too cool or too hot due to thermostat control issues
• Coolant leaks at the thermostat housing or sealing surface
• Delayed thermostat response during temperature changes
• Cooling system service on OE-specified 195°F applications
• Replacement needs for worn or corroded thermostat housing assemblies

Installation Notes and Tips

• Verify the vehicle year, make, and model against the listed fitment before installation.
• Inspect the mating surface and coolant outlet for corrosion or debris before mounting the housing.
• Bolts are not included, so reuse or source the correct fasteners as required by the vehicle.
• Use the included seal and confirm proper alignment of the 3-bolt housing during assembly.
• Refill and bleed the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Motorad manufactures this thermostat housing assembly with OEM-quality materials and safety standards as an OE supplier, using OEM specifications and processes for fit and function consistency.

• Fits 1994-1997 Chevrolet S10
• Fits 1994-1997 GMC Sonoma
• Fits 1996-1997 Isuzu Hombre
• Fits 1993-1996 Buick Century
• Fits 1992-1996 Chevrolet Corsica
• Fits 1993-1996 Oldsmobile Cutlass Ciera
• Fits 1992-1995 Chevrolet Cavalier
• Fits 1995 Pontiac Sunfire
• Fits 1993 Chevrolet Lumina