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SKU:FDR830151

Fluidampr

Fluidampr Steel Externally Balanced Harmonic Damper - 6.6L Duramax | 2020-2026 Chevy Silverado 3500HD

Fluidampr Steel Externally Balanced Harmonic Damper - 6.6L Duramax | 2020-2026 Chevy Silverado 3500HD

Regular price $698.80 USD
Regular price Sale price $698.80 USD
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The Fluidampr Steel Externally Balanced Damper fits the 2020-2026 Chevy Silverado 3500HD 6.6L Duramax and controls harmful torsional vibration across the entire RPM range.

Install Difficulty: Professional Install Only
Requires a crankshaft damper puller and installer tool to swap the factory balancer; typically takes 2-3 hours with front accessory drive access and proper torque-to-yield bolt procedure.

Product Overview

This viscous-style damper replaces the factory harmonic balancer with CNC-machined, precision-balanced high-grade steel construction. It reduces wear on the crankshaft and rotating assembly while unlocking lost torque and horsepower.

SFI 18.1 certified and finished in corrosion-resistant black zinc with an engraved timing mark, it is the damper trusted by heavy-duty diesel OEMs and performance engine builders.

Features & Specifications

  • Fits: 2020-2026 Chevy Silverado 3500HD
  • Fits 6.6L Duramax diesel only
  • Viscous damper design for broad RPM range protection
  • CNC-machined high-grade steel, externally balanced
  • SFI 18.1 certified for race use
  • Corrosion-resistant black zinc finish with engraved timing mark
  • Removable hard-coat anodized aluminum fan pulley
  • No maintenance required
  • Made in USA

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2020-2026 Chevrolet Silverado 3500 HD High Country
2020-2026 Chevrolet Silverado 3500 HD LT
2020-2026 Chevrolet Silverado 3500 HD LTZ
2020-2026 Chevrolet Silverado 3500 HD WT
⚠ Submodel Fitment: If your submodel is not listed in the fitment table above, we cannot confirm fitment. Please contact us before purchasing to verify.

Shipping & Returns

Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.

Warranty

All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.

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  • Free shipping over $250

    Free shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.

    Shipping policy 
  • 30-day returns

    Returns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.

    Return policy