Enhance the performance and reliability of your 1990–2001 Honda B-Series engine with the Fluidampr Performance Damper (Part #590601). Stock rubber dampers degrade over time, allowing harmful crankshaft torsional vibrations to increase—especially in high-performance or modified engines. The Fluidampr viscous damper controls these vibrations to protect internal components, improve valvetrain accuracy, and reduce the risk of crankshaft failure.
Unlike traditional rubber-based dampers, Fluidampr automatically adapts to engine modifications and self-tunes in real time across the entire RPM range. Each damper is precision CNC-machined, computer balanced, and constructed from high-grade steel with a hard coat anodized pulley for long-lasting performance. No tuning, rebuilding, or maintenance required.
Note: If the pulley is removed, torque the (9) 1/4-20 x 3/4" bolts to 120 in-lbs (10 ft-lbs) during reassembly.
Product Features
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Reduces destructive crankshaft torsional vibrations
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Extends main bearing, timing gear, and crankshaft life
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Improves valvetrain accuracy and overall engine smoothness
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Automatically self-tunes to any performance modification
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CNC-machined and computer-balanced for precision
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Hard coat anodized pulley for enhanced durability
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SFI 18.1 certified for safety and performance compliance
Specifications
| Specification | Detail |
|---|---|
| Part Number | 590601 |
| Fitment | 1990–2001 Honda B-Series Engines |
| Bore Diameter | 1.1008" |
| Degree Marking Range | TDC, 3 timing marks 2° apart |
| Degree Markings | Engraved |
| Engine Balance | Internal |
| Finish | Black Zinc |
| Keyway | Single |
| Length | 2.480" |
| Material | Steel |
| Pulley Finish | Hard Coat Anodized |
| Mounting Hardware Included | No |
| Outside Diameter | 5-7/8" |
| Safety Rating | SFI 18.1 |
| Weight / Rotating Weight | 7.8 lbs / 5.2 lbs |
Fitment
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1990–2001 Honda B-Series Engines