Gates CO34964 Engine Coolant Thermostat Housing Cover

Engine Coolant Thermostat Housing Cover

Gates CO34964 is a plastic engine coolant thermostat housing cover built for direct replacement service on select Hyundai and Kia cooling systems. It is part of the Gates Coolant Outlet line, which focuses on OE-style coolant outlets and thermostat housing components for common aftermarket fitment needs.

Compatible with Hyundai Santa Fe, Hyundai Santa Fe XL, Kia Sedona, Kia Sorento, Hyundai Azera, and Kia Cadenza applications, this coolant outlet is shaped to match original-style fitment and cooling system routing. The CO34964 part number is also a useful reference when searching for a thermostat cover replacement for these vehicles.

Key Features

• Brand: Gates Coolant Outlet
• Part number: CO34964
• Part type: Engine coolant thermostat housing cover / thermostat cover
• Material: Plastic
• Outlet inside diameter: 1.19 in
• Outlet outside diameter: 1.37 in
• Bolt hole quantity: 3
• Gasket quantity: 0
• OE-style coolant outlet design for direct-fit replacement service

Product Details

Gates Coolant Outlets are engineered to address common material, design, and manufacturing issues found in many aftermarket cooling components. The Coolant Outlet line covers everything from water outlets to complete thermostat housing assemblies, giving technicians and DIY buyers a focused replacement option for cooling system repairs. CO34964 is a thermostat housing cover designed to fit and perform like the original part while supporting long service life in everyday use.

This part cross-references Hyundai/Kia OE application 256313CAA0 for the same application. If you are searching for a coolant outlet for a Hyundai Santa Fe or Kia Sorento cooling system, CO34964 is a direct reference point for the correct thermostat housing cover style.

Common Repair Uses

• Cracked or warped thermostat housing cover
• Coolant seepage at the outlet or housing interface
• Damaged plastic coolant outlet from heat cycling
• Replacement during thermostat housing service
• Restoring proper coolant flow routing in the engine cooling system

Installation Notes

Verify outlet diameter, bolt-hole count, and OE reference before installation. Inspect the mating surfaces, seals, and adjacent cooling components for wear or contamination before reassembly. Because this thermostat cover is supplied without gaskets or seals, use the correct service parts specified for the vehicle application.

Quality Assurance

Gates designs its Coolant Outlet line to provide OE-style fit and function with attention to durability and application coverage. CO34964 is intended for select Hyundai and Kia models, including 2010-2018 Hyundai Santa Fe, 2013-2019 Hyundai Santa Fe XL, 2011-2018 Kia Sorento, 2011-2012 and 2014-2018 Kia Sedona, 2012-2017 Hyundai Azera, and 2014-2016 Kia Cadenza.