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USD 563.55
Part #: FD890101

Fluidampr Performance Diesel Series Damper 890101

2001-2005 GM 6.6L Duramax LB7 & LLY (Replaces OEM #97328573)
Part #: FD890101
★★★★★ ★★★★★ 5 Reviews
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The Fluidampr Performance Diesel Series Damper 890101 is an excellent way to smooth out the engine while adding a few ponies to your 2001-2005 GM 6.6L Duramax LB7 & LLY. The factory damper on your diesel has a limited lifespan and does not effectively control torsional vibrations across all RPMs. However, Fluidampr provides superior performance that lasts for the entire life of your engine. It is ideal for all types of trucks, including stock, work, and competition-built ones. By reducing wear on your main bearings and other vital engine components, Fluidampr ensures more accurate valvetrain operation, optimum engine protection at all RPMs, and reduces the risk of crankshaft failure.

Fluidampr is different from the factory rubber-based damper as it automatically adapts to your modifications, providing optimal damping at both peak levels and a broad changing frequency range. Its components are precision CNC machined and computer-balanced, ensuring that the Fluidampr does not need to be rebuilt or tuned. The Fluidampr design has been updated for ease of maintenance, allowing you to change your serpentine belt without removing the damper. Fluidampr is proud to manufacture this damper in the USA.

  • OD: 8-3/8" 
  • Material: Steel
  • Weight: 23.9 Lbs
  • Black Zinc Finish
  • Made In The USA
  • Externally Balanced
  • Improved Valve Timing
  • Lasts The Life Of The Engine
  • SFI 18.1 Spec For Competition
  • Increases Engine Component Life
  • Reduces Risk Of Crankshaft Failure
  • Reduces Harmful Engine Vibrations
  • Never Needs To Be Rebuilt Or Tuned 
  • Optimum Engine Protection At All RPMs
  • Corrosion-Resistant Finish With Engraved Markings
  • Damper Removal Not Required For Belt Replacement
  • Precision CNC Machined & Computer Balanced Components

Vehicle Applications

2001 Chevy 6.6L LB7 Duramax
2002 Chevy 6.6L LB7 Duramax
2003 Chevy 6.6L LB7 Duramax
2004 Chevy 6.6L LB7 Duramax
2004.5 Chevy 6.6L LLY Duramax
2005 Chevy 6.6L LLY Duramax
2001 GMC 6.6L LB7 Duramax
2002 GMC 6.6L LB7 Duramax
2003 GMC 6.6L LB7 Duramax
2004 GMC 6.6L LB7 Duramax
2004.5 GMC 6.6L LLY Duramax
2005 GMC 6.6L LLY Duramax


  • MFG. Number 890101
  • Manufacturer Name Fluidampr (Horschel)
  • Shipping Weight 23.00 lb.
  • Shipping Length 11.5 in.
  • Shipping Width 11.5 in.
  • Shipping Height 6.5 in.
  • Fuel Type Diesel
  • UPC 815293001487
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Internal L0.00R0.00


★★★★★ ★★★★★
4.4/5 Stars out of 5 Reviews
Verified Buyer
Fluid damper balancer
Awesome addition to the lb7 Duramax. Smoothes out idle. Bought with water pump as this is a great performance addition. Definitely recommended
Order #618347: Create Product
Had to install a new water pump which requires the removal of the damper, so while we were in there I installed the new Fluidampr. Took us roughly four hours from start to finish, it was a fairly difficult job but well worth it. Engine definitely runs smoother and quieter.
Nice Piece of Equipment
This thing is like installing something from hell, it is extremely difficult to install. But I think overall it was probably worth it. I say it only because the engine runs even quiter, pretty amazing, and you will get a few extra horses.
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