Autopart International 1601-479128 Engine Coolant Thermostat

The Autopart International 1601-479128 is an engine coolant thermostat, also called an engine thermostat. It sits in the cooling system and regulates coolant flow through the engine. It stays closed while the engine warms up. It opens once the engine reaches operating temperature, which helps the engine hold a steady running temperature.

Key Points:

• Engine coolant thermostat for cooling system replacement
• Helps regulate engine operating temperature by controlling coolant flow
• Sold under the Autopart International brand, MPN 1601-479128

A thermostat that is worn or stuck can cause overheating, poor cabin heater output, or unstable temperature readings. Replacing it restores proper coolant temperature control.