2001-2005 Duramax Welded Water Pump (SD-WWP-01)

Running a tuner? Bigger turbo or injectors? Or is it just time to replace a leaking water pump?

Make sure you replace your stock water pump with a Sinister Diesel "Welded" Water Pump to be sure you dont have any further issues. The factory water pump on the Duramax is known to slip on the shaft, and even more prone to slipping when more power is added. If either the impeller or gear slips, you will end up having major overheating issues, which could lead to very expensive repairs.

Part Number: SD-WWP-01

• Precision TIG welded on both Impeller and Gear
• Drop in replacement for factory pump
• 1-Year Manufacturer Warranty
• Cast Impeller

Don't see your question? Ask us anything about this product.

• ?

  Hey I bought one of these sinister water pumps November 5 2023 and it’s already gone bad is there any kind of warranty on these? Please let my know asap thanks

  There is a 1-Year Manufacturer Warranty on this Water Pump.