Ultimate Fix: Hyundai & Kia 2.4L Coolant Thermostat Housing Tested

When we noticed coolant leaks and temperature fluctuations in our 2013 Hyundai Sonata, we knew it was time to test a replacement thermostat housing. This Coolant Thermostat Housing Assembly (part #256002G500) fits numerous 2.4L models across the Hyundai and Kia lineup from 2010-2016, including the Sonata, Tucson, Santa Fe Sport, Sportage, Optima, and Sorento.

We were impressed by how precisely this OEM-compatible part matched the original housing. Installation was straightforward with the included gasket and hardware. After 500 miles of testing, we’ve experienced no leaks, proper temperature regulation, and improved cooling system performance.

For around $45, this housing assembly represents significant savings over dealership parts while maintaining quality. If your 2.4L engine is showing signs of thermostat housing failure, this replacement should be at the top of your shopping list.