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![Harmonic Balancer for GM Small Block Chevy 262-350/409 [Internal Balance, 6-1/4 in., Black Zinc]](https://www.jegs.com/images/mini_750/300/388/388-620101.jpg)
Vehicle Info NeededFLUIDAMPRPART NUMBER: 388-620101
Harmonic Balancer for GM Small Block Chevy 262-350/409 [Internal Balance, 6-1/4 in., Black Zinc]
$38582
Ships on Sep 08, 2026
Lowest Price GuaranteeChevy Harmonic Dampers
Harmonic BalancerGM Small Block Chevy 262-350/409ci Internal Balance 6-1/4 in. Diameter SFI 18.1 Certified Steel Construction Black Zinc Finish Sold Individually
This viscous damper controls torsional vibration on small block Chevy engines running higher RPM or a stroked rotating assembly, protecting the crankshaft and reducing wear on accessory drive components.
Fluidampr 620101 Features:
- Internal balance for GM/Chevy/Buick/Pontiac small block 262-350ci, 409ci
- 6-1/4 in. outside diameter
- SFI 18.1 certified steel construction
- Black zinc chromate finish with engraved timing marks
- Not compatible with 1992-later LT1
- No maintenance required, made in USA
Part TypeHarmonic Balancer
BrandFLUIDAMPR
Package Height4.5
Package Width10.3
Package Length10.8
Weight8.75 PG
Weight8.0 lbs.
Part CategoryPerformance Parts
Degree MarkingsYes
MaterialSteel
Part FitmentSemi Universal
PositionN/A
Harmonic Balancer ConstructionFluid
Outside Diameter6-1/4 in.
QuantitySold individually
Safety RatingSFI 18.1
FinishBlack Zinc
Mounting Hardware IncludedNo
Degree Marking Range50 BTDC to 10 ATDC. Additional timing/
Engine BalanceInternal
Harmonic Balancer MaterialSteel
Vendor Part Number620101
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
