Fluidampr 960311 5.9L Cummins 1989 to 1998 Fluidampr Harmonic Fluid Damper

Fluidampr 960311 5.9L Cummins 1989 to 1998 Fluidampr Harmonic Fluid Dampers

BRAND: Fluidampr | SKU: Fluidampr-960311

Fluidampr 960311 Harmonic Damper

$630.70 ~~$742.00~~ ~~$742.00~~ /

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Upgrade your 12V 5.9L Cummins Diesel with Fluidampr 960311 – a high-performance, viscous crankshaft harmonic damper that self-tunes to control torsional vibrations, boosting power and extending engine life.

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Overview

The Fluidampr 960311 is a high-performance viscous crankshaft harmonic damper designed for the 12 Valve 5.9L Cummins Diesel Engine. Manufactured in an ISO 9001-certified facility in the USA, this damper automatically self-tunes in real time to control torsional vibrations, enhancing engine performance and longevity. Engineered for both stock and modified engines, it delivers improved torque, horsepower, and fuel efficiency while reducing wear on critical engine components.

Key Features & Benefits

Superior Vibration Control:
Continuously self-tunes to optimize damping of torsional vibrations across all RPMs.
Enhanced Engine Performance:
Increases torque and horsepower, improves fuel efficiency, and reduces wear on bearings and timing gears.
Robust Construction:
Constructed from high-quality steel with a black zinc finish, featuring an outside diameter of 9.75 inches and a weight of 24 lbs.
Precision Engineering:
Internally balanced, precision-machined, and computer-balanced for maximum reliability.
OEM Upgrade:
Replaces stock rubber dampers with a high-performance viscous damper that never requires tuning or rebuilding.
SFI Approved:
Meets rigorous heavy-duty diesel performance standards.

Applications

Designed for the 5.9L Cummins diesel engines powering:

1989 to 1991 Dodge D250 and D3500 trucks (12 Valve Cummins)
1992 to 1998 Dodge 2500 and 3500 trucks
Various commercial, agricultural, racing, and sled-pulling vehicles using the 5.9L Cummins diesel engine

Additional Features

Sensor Relocation Kit Included:
Comes with the Fluidampr 300003 Cummins Sensor Kit for proper operation with stock tachometer/alternator pickups.
Optional Drill Pin Kit:
Enhance retention and prevent fretting by using the Fluidampr 300002 Cummins Drill Pin Kit between the damper and crankshaft.
Service Interval:
Inspect and replace the damper at approximately 300,000 miles to prevent catastrophic engine damage.

Specifications

Watch the Fluidampr 960311 in action. This video demonstrates its performance and installation benefits:

Why Choose Fluidampr 960311?

The Fluidampr 960311 is far superior to stock rubber-based dampers. Its advanced viscous design, continuous self-tuning capability, and robust construction deliver unmatched control over torsional vibrations, protecting your engine and ensuring peak performance throughout its lifespan.

By KLM Performance

Engine : 5.9L Cummins
Item Number : Fluidampr 960311
Make : Cummins | Dodge | Ram
Model : D250 | D350 | W250 | W350 | 2500 | 3500
Year : 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998
Manufacturer Part No: 960311
Product Application: 1989 to 1998 Dodge D250, D350, W250, W350, and Dodge Ram 2500 and 3500 series trucks with the 6BT 5.9L Cummins 12V Diesels
Height: 8
Width: 15
Brand: Fluidampr
FAQ: Why is the Fluidampr Viscous Performance Diesel Damper better than the OEM rubber damper? The Fluidampr 960311 Viscous Harmonic Fluid Damper is designed to effectively control the destructive torsional vibrations on a stock or highly modified diesel engine at all engine RPMs and Power levels. Is this Fluidampr viscous crankshaft damper a direct bolt-on replacement for the OEM Cummins 3924435 damper? Yes, this is A superior replacement viscous crankshaft damper that controls torsional vibrations at all RPMs and power levels for increased power output and reliability.
Part Number: 960311
Manufacturer: Fluidampr
Product Note: Only a Fluidampr 5.9L Twelve Valve Cummins Viscous Crankshaft Vibration Damper can protect your engine at all power levels and RPMs.

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Excellent replacement 5.9L Cummins damper

I'm so glad I purchased the Best dampener for any engine. It's extremely well made and does what it should. You can’t go wrong!

Hi Steve!

Thank you for taking the time to leave a review. We are thrilled to hear that it was an excellent replacement for your 5.9L Cummins engine and that it is well-made and performs as expected. We appreciate your trust in our product and are happy to know that you are satisfied with your purchase. Thank you for choosing KLM!

Thank you,
Sara Paynter-Mercer  
KLM Performance Customer Experience Manager

Important Over Looked performance Product

I bought this for my 1998 Ram 3500 due to the degradation of the OEM damper.
The installation went pretty well, in terms of making a difference, it’s definitely noticeable, that the truck is smoother at idle and while driving.