ACDelco 12701138 GM OE Engine Coolant Thermostat Housing

The ACDelco 12701138 is a GM Original Equipment Engine Coolant Thermostat Housing designed as a direct-fit replacement for select GM vehicles. This housing serves as the structural mounting point for the engine's thermostat and acts as a critical connection point between the engine block and the cooling system's radiator hose.

Key Features:

• GM Original Equipment part — manufactured to GM OE specifications for fit, form, and function
• Serves as the thermostat mounting housing and radiator hose inlet or outlet connection point
• May include integrated ports for coolant temperature sensors or switches
• Engineered to provide the same performance, durability, and service life as the factory component
• Backed by ACDelco's limited warranty

As a GM OE component, the ACDelco 12701138 engine coolant housing is held to the rigorous engineering and quality standards set by General Motors, making it the recommended replacement for the original factory part.