Gates CO35011 Engine Coolant Thermostat Housing - Lower Housing

Gates Coolant Outlet Thermostat Housing

The Gates Coolant Outlet CO35011 is an engine coolant thermostat housing built for direct replacement on select Hyundai and Kia applications. It is made from plastic and includes two integrated seals for a cleaner, OE-style service part that addresses common cooling system wear points.

Gates Coolant Outlet line coverage is focused on water outlets and complete thermostat housing assemblies, giving technicians a practical replacement option for cooling system repairs on the 2011-2013 Hyundai Sonata, 2011-2013 Kia Optima, and 2011-2012 Kia Sportage.

Key Features

• Part number CO35011
• Engine coolant thermostat housing / coolant outlet assembly
• Plastic construction
• Includes two integrated seals
• Three bolt-hole mounting design
• OE-style fit and function for select Hyundai and Kia vehicles
• Cross-reference: 256202G540

Product Details

Gates CO35011 is engineered as a thermostat housing replacement that follows original-style fitment and performance targets. The housing is designed for the lower housing position on the 2011-2013 Hyundai Sonata and is also listed for the 2011-2013 Kia Optima and 2011-2012 Kia Sportage. If you are searching for a Hyundai Sonata lower thermostat housing, Kia Optima coolant outlet, or Kia Sportage thermostat housing replacement, CO35011 is the direct-fit part to review.

The Gates Coolant Outlet product line is built to address common aftermarket issues related to design, manufacturing, and material quality. This housing is intended to provide a straightforward replacement for the original coolant outlet assembly while maintaining long service life in the cooling system.

What It Helps Repair

• Coolant leaks at the thermostat housing or outlet flange
• Cracked or deteriorated plastic housing material
• Seal-related seepage at the cooling outlet connection
• Cooling system service needs on a Hyundai Sonata, Kia Optima, or Kia Sportage
• Replacement of a worn lower housing assembly

Installation Notes

Verify the vehicle year, make, model, and housing position before installation. Confirm the outlet and bolt-hole layout matches the original part, and inspect the mating surfaces for corrosion, residue, or damage before fitting the new housing. Because this part includes integrated seals, avoid reusing damaged sealing surfaces and follow the vehicle service procedure for coolant refill and air bleeding after installation.

Quality Assurance

Gates designs this coolant outlet to fit and perform like the original component while providing a cost-effective replacement for select cooling system repairs. CO35011 is built for direct replacement use on the listed Hyundai and Kia applications and is backed by Gates’ focus on full-line cooling system coverage.