ACDelco 55353494 GM Original Equipment Engine Coolant Thermostat Housing

The ACDelco 55353494 is a GM Original Equipment Engine Coolant Thermostat Housing designed as a direct-fit replacement for GM vehicles. Engineered to meet the same exacting standards as the factory-installed component, this thermostat housing ensures a precise fit and reliable seal within the engine cooling system.

As a GM OE part, the 55353494 is manufactured to the same specifications used during original vehicle assembly — delivering the performance, durability, and service life you expect from a factory replacement. This housing secures the engine coolant thermostat in place and maintains a leak-free connection between the thermostat and the coolant passages in the engine.

Key Features:

• GM Original Equipment — manufactured to factory specifications
• Direct OEM replacement for a precise, no-modification fit
• Maintains proper coolant flow and temperature regulation
• Provides a durable, leak-resistant seal in the cooling system
• Meets GM-recommended standards for performance and service life
• Exact replacement for original factory thermostat housing

The ACDelco 55353494 thermostat housing is the trusted choice for restoring your vehicle's cooling system to factory condition, helping prevent overheating and maintaining optimal engine operating temperature.