SKU:FDR830151
Fluidampr
Fluidampr Steel Externally Balanced Harmonic Damper - 6.6L Duramax | 2020-2026 GMC Sierra 3500HD
Fluidampr Steel Externally Balanced Harmonic Damper - 6.6L Duramax | 2020-2026 GMC Sierra 3500HD
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The Fluidampr Steel Externally Balanced Damper fits the 2020-2026 GMC Sierra 3500HD 6.6L Duramax and controls harmful torsional crankshaft vibration across the entire RPM range.
Product Overview
This viscous damper replaces the factory harmonic balancer with CNC-machined high-grade steel components and a corrosion-resistant black zinc finish with engraved timing mark.
It reduces wear on rod and main bearings, timing gear, and the crankshaft itself -- critical protection for tuned or towing-heavy L5P Duramax builds.
SFI 18.1 certified, race proven for over 35 years, and requires no maintenance for the life of the engine.
Features & Specifications
- Fits: 2020-2026 GMC Sierra 3500HD
- Fits 6.6L Duramax diesel only
- CNC-machined high-grade steel construction
- Corrosion-resistant black zinc finish with engraved timing mark
- Removable hard-coat anodized aluminum fan pulley
- SFI 18.1 certified for competition use
- Broad RPM range torsional vibration control
- Externally balanced, no maintenance required
- Made in USA
Fitment
This part fits the following vehicles:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2026 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2026 | GMC | Sierra 3500 HD | Denali |
| 2024-2026 | GMC | Sierra 3500 HD | Denali Ultimate |
| 2022-2026 | GMC | Sierra 3500 HD | Pro |
| 2020-2026 | GMC | Sierra 3500 HD | SLE |
| 2020-2026 | GMC | Sierra 3500 HD | SLT |
Shipping & Returns
Shipping & Returns
Products that are in stock ship within 1-3 business days of being ordered. Please note some items are made to order, or could be out of stock. If you have any questions regarding stock please contact us through the live chat or email and we would be happy to help
Warranty Info
Warranty Info
All warranties are through the manufacturer, they will be facilitated by State Side Performance (some manufacturers require the end user contact the manufacturer directly to facilitate the warranty, in that case we will recommend you contact the manufacturer. Please contact us by Email if you have any questions or concerns regarding a warranty claim.
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Free Shipping for Non Oversize Items of $250
More info on shipping policyFree 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.
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Return Policy
More info on refund and return policyReturns must be UNOPENED, UNUSED, HAVE ALL ORIGINAL PACKAGING, BE IN NEW CONDITION, HAVE A VALID RMA, BE WITHIN A 30 DAY RETURN WINDOW FROM THE DATE OF PURCHASE.