DHD 500-112 High Performance High RPM LB7 & LLY Duramax Water Pump

Dirty Hooker Diesel 500-112 High Performance High RPM Water Pump LB7 LLY Duramax

Our number 1 selling LB7/LLY water pump kit is better then ever! Each kit now includes the upper bypass tube o-ring, 3 stainless mounting bolts and stainless oil cooler tube studs. No more fighting to remove the studs from your OE pump!

With the advancements in technology and tuning, these Duramax diesels are producing more horsepower and torque than originally intended and thus the water pump suffers. We have come up with a solution to the problematic water pump on the 2001-2005 LB7 & LLY Duramax Diesels. Our water pump does not utilize the heavy cast water pump wheel, but a light weight resin wheel. Our lightweight impeller prevents impeller spin and decreases cavitation traditionally encountered at high RPM. Each pump cover is modified to bolt right in place of the existing pump. Everything is included with the pump in order to install.

Warranty:

This pump is warranted to be free of defects for 2-years or 50,000 miles, whichever comes first. This is a part only warranty and does not cover labor. Incorrect installation and housing degrading due to acidic or incorrect coolant use is not warranted. 

Features:

• 100% OE Grade GM Water Pump Base Components
• Lightweight Resin Impeller Wont Crack, Loosen or Spin off the Pump Shaft @ High RPM
• Modified Pump Cover to be 100% Compatibly with your LB7 and LLY
• Upgraded Stainless Hardware and Seals Included
• Pump Comes Assembled, Ready to Install.

Kit Includes:

• 94011603 Bypass Tube Lower O-Ring
• 94011602 Bypass Tube Upper O-Ring (New Kit Addition)
• 94013304 Pump to Front Cover Large O-Ring
• 12635594 Pump Outlet Flange Gasket
• Long Stainless Bolt (New Kit Addition)
• Medium Stainless Bolt to Replace Stud
• Short Stainless Bolt 
• (2) Stainless Oil Cooler Tube Studs (New Kit Addition)

Fitment:

• 2001 Chevrolet Silverado 2500 3500 HD 6.6L Duramax
• 2002 Chevrolet Silverado 2500 3500 HD 6.6L Duramax
• 2003 Chevrolet Silverado 2500 3500 HD 6.6L Duramax
• 2004 Chevrolet Silverado 2500 3500 HD 6.6L Duramax
• 2004.5 Chevrolet Silverado 2500 3500 HD 6.6L Duramax
• 2005 Chevrolet Silverado 2500 3500 HD 6.6L Duramax
• 2001 GMC Sierra 2500 3500 HD 6.6L Duramax
• 2002 GMC Sierra 2500 3500 HD 6.6L Duramax
• 2003 GMC Sierra 2500 3500 HD 6.6L Duramax
• 2004 GMC Sierra 2500 3500 HD 6.6L Duramax
• 2004.5 GMC Sierra 2500 3500 HD 6.6L Duramax
• 2005 GMC Sierra 2500 3500 HD 6.6L Duramax

Why Not Welded Water Pump?

• With DHD's resin wheel water pump impeller there is no need to have any components welded. We have found that welding of two dissimilar metals nearly always results in cracks or premature failures. Its also not uncommon to have pump shaft bearing failures on welded pumps. This is likely because of small imperfections induced into the bearing surface from an arc created while the welder is grounding.

Things to consider:

• Traditional green coolant (ethylene glycol) or coolant beyond its service life is high in acids. These acids are aluminums worst enemy. To ensure longevity and performance of your water pump we recommend you replace your coolant during this install. Aluminum degradation will not be covered by warranty.