The XDP XTRA Cool Water Pump (Housing Optional) XD678 / XD679 is a direct-fit replacement for the failed component in your GM 6.6 L5P Duramax. This water pump utilizes high-quality materials in the manufacturing process and is made to the same high-quality specifications as the factory pump. 

Features & Details:

• High-Quality Materials
• Direct-Fit Replacement
• Includes Mounting Gasket