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Sinister Diesel "Welded" Water Pump for 2001-2005 Duramax LB7 / LLY

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Was: $345.79
Sale: $265.99
Save: 23%
Save: $79.80


Proper heat management from the cooling system is crucial on modified engines when you want trouble-free and reliable performance. The factory Duramax water pump is known to slip under load and can serious problems and serious repair bills on modified high-horsepower applications. This updated design is a drop-in replacement for the factory water pump and uses precision TIG welds to secure both the impeller and pump gear to the shaft. If your 2001-2005 Duramax powered truck is running a tuner, a bigger turbo, or bigger injectors, or if it's just time for routine maintenance, get peace of mind with the Sinister Diesel Welded Duramax Water Pump.


  • TIG welded on both Impeller and Gear for high strength and slip-free operation
  • Drop-in replacement for LB7/LLY factory water pump
  • Meets or exceeds OEM specifications


  • Sinister Diesel "Welded" Water Pump
  • O-Ring
  • Thermostat Gasket


  • Q: Is there a warranty for this product?
  • A:This item does comes with a 1 year warranty


Shipping Information

  • Item Requires Shipping
  • 6.0 lbs.
  • W6.0000” x H6.0000” x L6.0000”
  • Free Ground Shipping

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