ACDelco 15-11057 Engine Coolant Thermostat Housing Assembly with Water Inlet

The ACDelco 15-11057 is a GM Original Equipment engine coolant thermostat housing assembly that combines the engine thermostat and water inlet housing in a complete, ready-to-install unit. This is a GM-recommended replacement for your vehicle's original cooling system components, designed to restore proper engine temperature regulation and coolant flow.

Complete Assembly Includes:

• 186-degree Fahrenheit engine thermostat
• Aluminum water inlet housing with natural finish
• O-ring sealing components for leak-free performance
• Threaded ports for sensors and switches (application-specific)

How It Works:

The thermostat controls coolant flow through the radiator, allowing the engine to reach and maintain its optimal operating temperature. The water inlet housing serves as the connection point between the radiator hoses and the thermostat assembly, ensuring proper coolant circulation throughout the cooling system.

OEM Quality and Fitment:

As a genuine GM Original Equipment part, this assembly is manufactured to the exact specifications used in vehicle production. It provides the same fit, performance, durability, and service life you expect from General Motors components. The part directly replaces OEM number 12600172 and is designed for straightforward bolt-on installation on compatible GM vehicles including Chevrolet, GMC, Cadillac, Buick, Pontiac, Hummer, Isuzu, and Saab models.

Backed by ACDelco's quality standards and GM engineering, this thermostat housing assembly is an ideal choice for maintaining your vehicle's cooling system performance and preventing overheating issues.