Fix the water pump issues in your 2001-2005 GM 6.6L Duramax LB7/LLY with the Wagler WCPC66125 Billet Water Pump. The impeller on the factory water pump often separates from the shaft as a result, the water pump cannot continue to move coolant and overheating begins. The aftermarket has addressed this by welding, or pinning the impeller to the shaft. In many instances, that still doesn't cut it. The Wagler WCPC66125 Billet Water Pump presents a complete solution to end the hassle once and for all.
Don't let your engine overheat from a pinned or welded aftermarket pump. The Wagler Billet Water Pump features an all billet construction with ceramic seals, and roller bearings. It uses reverse thread on the impeller and drive gear shaft that is made from hardened tool steel. This water pump is fully rebuildable and is proudly made in the USA!