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Engines and Components› Harmonic Balancers

Professional Products

SBC 400 6-3/4 Harmonic Damper - Non-SFI

$127.43 $94.46 Save $32.97

SKU: P021 80001

In Stock
In Stock
Ships by Jun 15
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Professional Products 6.75" SBC 400 Harmonic Damper is a steel harmonic balancer designed for Chevy Small Block Gen I V8 engines from 1970-1980 with a 6.6L/400 engine size. This damper features two TDC marks, one at 10° and one at 40° left of the keyway centerline, accommodating different timing pointer locations. The damper includes a bolt-in counterweight and cannot be used without it.

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

BrandProfessional Products
Part NumberP021 80001

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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