Overview

The Fluidampr 800191 is a high-performance replacement viscous diesel crankshaft damper engineered as a superior 6.2 diesel harmonic balancer and 6.5 diesel harmonic balancer for 1982 to 1993 engines. Designed for Chevrolet, GMC, AM General, and other GM vehicles with mechanical fuel pumps, this damper is critical for protecting your 6.2L or 6.5L diesel engine by minimizing torsional vibrations, reducing engine wear, and unleashing lost torque and horsepower.

Key Features & Benefits

• Enhanced Engine Performance:
  It boosts horsepower, torque, and fuel efficiency by reducing parasitic power loss and minimizing wear on the main bearings and timing gears.
• Durable Construction:
  Constructed from high-quality steel and coated with a Black Zinc finish, the damper features an 8-inch outside diameter and weighs 23 pounds.
• Precision Design:
  With external timing/degree marks at 90°, 180°, and 270°, this externally balanced damper is engineered for ease of installation and precise alignment.
• OEM Quality:
  Manufactured in an ISO 9001-accredited facility in the USA, this damper is built to last and is a trusted upgrade over stock rubber-based dampers.

Applications

The Fluidampr 800191 is designed for:

• 1982 to 1993 Chevrolet and GMC C/K series trucks
• 1992 to 1993 AM General Hummer H1 and HMMWV
• GM version of the CUCV
• 1982 to 1993 Chevrolet Vans
  This damper is ideal for both commercial and agricultural applications where reliable 6.2 diesel fluid damper performance is essential. It is a proven solution for protecting engines used in race competitions, sled-pulling, and high-performance builds.

Technical Specifications

• Material: Steel
• Finish: Black Zinc (for corrosion protection)
• Outside Diameter: 8 inches
• Weight: 23 lbs
• Balance: External
• Timing Marks: 90°, 180°, 270°
• Certification: Made in the USA, built in an ISO 9001 facility

Replacement & Service

It is imperative to replace your damper at the scheduled maintenance interval to prevent catastrophic engine damage. Installing the Fluidampr 800191 early in your performance build will help maintain optimal engine timing and protect your engine from harmful torsional vibrations.

By integrating these upgrades, you’ll reinforce your harmonic balancer installation, extend component longevity, and optimize engine stability under all operating conditions.

• Engine: 6.2L Diesel | 6.5L Diesel 
• Power Level: Stock engines up to Highly modified diesel engines
• Item Number: Fluidampr 800191
• Make: Chevy | GM | AMG
  
• Model: Diesel
• Year : 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993
• Manufacturer Part No: 800191
• Product Application: 1982 to 1993 GM - AMG 6.2L and 6.5L Diesel engines with Mechanical Fuel Pumps.
• Height: 8
• Width: 16
• Brand: Fluidampr
• FAQ: Is this replacement damper a direct bolt-on component?
  Yes, the Fluidampr 800191 Viscous Crankshaft Vibration Damper is designed as a direct factory replacement damper. No modification is required for the installation of this high-performance crank damper.
  
• Part Number: 800191
• Manufacturer: Fluidampr
• Product Note: Installation of the Fluidampr 800191 on your 6.2L or 6.5L Chevy /GM Diesel will not only protect your engine from destructive torsional vibrations but will also provide a dramatic reduction in the level of in-cab vibrations you experience.