ACDelco GM Original Equipment Thermostat Bypass Hose

The ACDelco GM Original Equipment Thermostat Bypass Hose line gives you a factory-grade replacement coolant bypass hose. It is also called a thermostat bypass hose or engine coolant bypass hose. It carries coolant around the thermostat so the engine cooling system can circulate coolant and regulate temperature as designed.

Key Features:

• GM Original Equipment replacement part, engineered to meet GM specifications for fit and function
• Made from coolant-resistant hose materials built to handle engine heat, pressure and vibration
• Helps maintain proper coolant flow and consistent engine operating temperature
• Helps prevent leaks, seepage and coolant loss from a cracked, hardened or deteriorated hose
• Backed by the ACDelco brand, GM's parts brand

Replacing an aging bypass hose helps protect against overheating and keeps the cooling system reliable. When you service the hose, it is good practice to inspect the clamps, connections and coolant condition at the same time. Select the correct child item for your application from the options on this page.