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Engines and Components› Harmonic Balancers

Gator Fasteners

Gator Fasteners Harmonic Damper Bolt for Chevy/GMC (2001-19) 6.6L Duramax Gator Fasteners HDB66

$349.99 $36.99 Save $313.00

SKU: G05P HDB66

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Gator Fasteners Harmonic Damper Bolt for Chevy/GMC (2001-19) 6.6L Duramax Gator Fasteners HDB66

MIA's Description

The Gator Fasteners Heavy Duty Harmonic Damper Bolt (HDB66) is engineered to provide superior clamping force and durability for 2001-2025 6.6L Duramax Diesel engines. A secure harmonic damper is critical for maintaining crankshaft stability and preventing vibrations that can lead to premature engine wear or failure.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandGator Fasteners
Part NumberG05P HDB66

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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