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Dirty Hooker Diesel 01-16 GM 6.6L Duramax Manual Fan Hub Conversion

A must have upgrade for your Duramax puller! This fixed fan hub will eliminate your OE viscous fan clutch and increase your intercooler efficiency. Early testing shows considerable decreases in intake air temps and coolant temps, both of which equate to more power. Testing, fitment trials and data collections are happening as we speak and will become available as they are validated.


DHD's dual pattern flange allows the use of 2001-2010 or 2011-2016 cooling fans.

2001-2016 Duramax 6.6L LB7, LLY, LBZ, LMM, LML

Note: LML trucks with electronic clutches may require ECM tuning to prevent check engine lights.


  • Lower Intake Air Temps
  • Lower Engine Coolant Temps
  • Lower Transmission Fluid Temps
  • Accepts OE Hardware and Fans
  • Black Anodized Finish
  • Billet 1018 Steel Construction


Disclaimer: This component has not been E.O tested and may impact fuel mileage/efficiency. DHD does not support or encourage the use of this product on licensed, on road vehicles.

 DHD: 500-325

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