
Harmonic Balancers
The harmonic balancer, or damper, absorbs crankshaft vibration and carries the timing marks and front drive pulleys. This category covers external and internal balance dampers, underdrive designs, bolts and timing tape. Check the engine family, balancer diameter, internal or external balance, bolt thread and whether it clears your front cover.
Showing 16 popular parts from 29 in this category. Search above or open the full catalog for the rest.


Ford SB 302 351 Windsor 28oz External Fluid Damper Harmonic Balancer SFI 18.1
In stock
Chevy SBC 350 7.250" Internal SFI-Rated Fluid Damper Harmonic Balancer
Available to order
Chevy SBC 350 6.250" Internal SFI-Rated Fluid Damper Harmonic Balancer
Available to order
−15%Chevy GM LS 6.780" 10% Underdrive Harmonic Balancer Damper SFI 18.1
In stock
−15%Chevy GM LS 5.670" 25% Underdrive Harmonic Balancer Damper SFI 18.1
In stock





Chevy BBC 396 427 7.000" Internal Balanced Harmonic Damper Balancer SFI 18.1
In stock

Oldsmobile 455 6.625" External Balanced Fluid Damper Harmonic Balancer SFI 18.1
Available to order
Ford FE 390 427 428 Internal Balanced Fluid Damper Harmonic Balancer SFI 18.1
In stockMore in Engine
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Install guides, catalogs and engine calculators. The calculators are pre-filled with a typical 350 small block.