ACDelco 12737097 Thermostat Bypass Pipe Gasket for 6.6L Diesel

The ACDelco 12737097 is a GM Genuine Parts thermostat bypass pipe gasket designed, engineered, and tested to rigorous standards for GM vehicles. This gasket is specifically designed for 6.6L diesel engines and provides a critical seal between the bypass pipe and water pump.

Key Features:

• GM Original Equipment (OE) quality gasket for reliable cooling system performance
• Precision-engineered to provide proper sealing between thermostat bypass pipe and water pump
• Manufactured to exact GM factory specifications for guaranteed fit and function
• Replaces previous part number 12643771
• Single-use gasket design ensures fresh seal with each installation
• Designed to withstand coolant exposure, engine heat, and compression cycles

This genuine ACDelco gasket is essential for maintaining the integrity of your engine's cooling system. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). When performing cooling system maintenance or replacing the thermostat bypass pipe, always use a new gasket to prevent coolant leaks and ensure proper engine temperature regulation.

OEM Part Number: 12737097 (Supersedes 12643771)