NTP WH-HNG-78 Engine Coolant Thermostat with Gasket and Housing 78C

The NTP WH-HNG-78 is a direct-fit replacement engine coolant thermostat assembly, complete with integrated housing and gasket, rated at a 78°C (172°F) opening temperature. Manufactured by TAMA — a Japanese OEM supplier — this thermostat meets or exceeds original equipment specifications, making it a reliable choice for restoring proper engine cooling system function.

The housing-integrated design simplifies installation by combining the thermostat, housing, and gasket into a single assembly, reducing the risk of leaks and eliminating the need to source multiple components separately.

Key Features:

• Opening temperature: 78°C (172°F)
• Housing-integrated thermostat assembly — includes gasket and housing
• OEM-quality construction from Japanese manufacturer TAMA
• Direct OEM replacement for Honda part numbers 19310-5A2-A01 and 19310-5A2-A02
• Helps maintain proper engine operating temperature and prevent overheating
• Manufactured to tight tolerances for accurate temperature regulation

Replacing a worn or failed engine thermostat with a quality OEM-equivalent part like the WH-HNG-78 helps protect the engine from the damage caused by overheating or running too cold. Cross-reference part numbers include: WHHNG78, Motorad 732-172, AISIN THH-011.