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02-10 GM 6.6L Duramax DHD Manual Belt Tensioner Package

As peak horsepower and engine RPM's continue to climb, it's becoming more evident that the factory Duramax belt tensioner is not sufficient! DHD's manual tensioner package is a complete solution to eliminating belt slip and belt deflection under high rpm and high load. This two-piece kit eliminates the factory spring driven tensioner that comes on your truck and adds an addition pulley to the routing system to increase belt engagement. This kit is a must for dual fueler trucks or those exceeding 4000rpm.


  • Triple Locking T6061 Billet Tensioner
  • Extended Range Threaded Adjustment
  • New Pulleys with Upgraded High Speed Bearings
  • Heavy Duty Supporting Pulley with Block Standoff
  • Mounting Hardware
  • Shipped Unpainted


  • 2002-2010 Duramax 6.6L
  • Does not fit 2001 LB7 Duramax
  • LML Fitment Pending


  • GM 98094201 OE Tensioner
  • AcDelco 38172

DHD: 800-160

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