Mahle C31999 Engine Coolant Thermostat Housing Gasket

Mahle C31999 Thermostat Housing Gasket

Mahle C31999 is an OEM-standard engine coolant thermostat housing gasket made from paper for a precise seal between the thermostat and thermostat housing. It is built for Hyundai and Kia cooling system service where a clean, reliable gasket surface is needed to control coolant flow and prevent leaks.

Key Features

• Paper gasket material for thermostat-to-housing sealing
• OEM Standard item grade for service replacement applications
• Engine coolant thermostat housing gasket for cooling system repair
• Brand engineering backed by Mahle sealing products used by OEMs and technicians
• Cross-references Beck/Arnley 039-0143 and FEL-PRO 25538 for the same application

Product Details

This Mahle C31999 gasket is used in thermostat housing service on select Hyundai Elantra, Hyundai Tiburon, Hyundai Tucson, Kia Soul, Kia Sportage, Kia Spectra, and Kia Spectra5 applications. The paper construction supports a straightforward seal at the thermostat to thermostat housing interface, making it a practical choice for cooling system maintenance on vehicles that require an OEM-style replacement gasket. Mahle C31999 is a direct-fit sealing component for many Hyundai and Kia cooling system repairs.

Common Repair Uses

• Coolant seepage at the thermostat housing
• Sealing issues after thermostat replacement
• Maintenance on aging Hyundai Elantra and Hyundai Tiburon cooling systems
• Thermostat housing service on Kia Sportage, Kia Spectra, and Kia Soul models
• Restoring a proper seal after housing removal and inspection

Installation Notes and Tips

Clean both sealing surfaces thoroughly before installation and remove old gasket material, corrosion, and coolant residue. Verify the thermostat and housing surfaces are flat and undamaged before reassembly. This part is listed for thermostat to thermostat housing use with paper gasket material, so correct surface preparation is important for a dependable seal.

Quality Assurance

Mahle states that its gaskets are trusted by OEMs and technicians worldwide, and this part is built to OEM Standard specifications for service replacement use.