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JEGS Professional SFI Harmonic Balancers/Dampers


JEGS Performance Products
JEGS Professional SFI Harmonic Balancers/Dampers

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Professional SFI Harmonic Balancers/Dampers
Tested to 20,500 RPM!

JEGS Professional SFI Harmonic Balancers/Dampers not only meet, but far exceed, SFI 18.1 Specifications! We tested our balancers to 20,500 RPM because that is all the test machine could handle! In a push-a-part strength test the woodruff key gave way before our balancer did!!

Unlike most harmonic balancers manufacturers who injection mold and then cold bond the elastomer ring to the balancer, JEGS Harmonic Balancers are manufactured using a unique process which heat bonds, under extreme pressure, the dampening isolator to the center hub and the inertia ring. This process is proven to eliminate slippage and separation of the hub and inertia ring which is the common cause of harmonic balancer failure. You will also find that many harmonic balancers use a billet aluminum hub. We use a Power-Forged steel hub. Not only does it provide greater strength, without added weight, but it also provides superior wear resistance. Wear resistance is critical to the durability of the oil seal and crank nose areas.

All counterweighted JEGS Professional SFI Harmonic Balancers/Dampers have machined integral counterweights. Integral counterweights are more secure and accurate than bolt in counterweights, which can lead to engine vibration and other problems.

Each balancer is precision CNC machined from 1045 steel, balanced to factory O.E.M. tolerances, has 360° timing marks and finished high gloss black finish for looks, strength and durability.


16 Products
Small Block Chevy Harmonic Balancers/Dampers

555-51600
Small Block Chevy Harmonic Balancer/Damper
  • 6.25" Internal Balance
  • $192.99
    Ships

    555-51604
    Small Block Chevy Lightweight Harmonic Balancer/Damper
  • 6.75" External Balance
  • 7.8 lbs.
  • $225.99
    Ships

    555-51601
    Small Block Chevy Harmonic Balancer/Damper
  • 6.75" Internal Balance
  • $169.99
    Ships

    555-51602
    Small Block Chevy Harmonic Balancer/Damper
  • 8" External Balance
  • $225.99
    Ships

    555-51603
    Small Block Chevy Harmonic Balancer/Damper
  • 8" Internal Balance
  • $225.99
    Ships
    Big Block Chevy Harmonic Balancers/Dampers

    555-51615
    Big Block Chevy Harmonic Balancer/Damper
  • 7-1/8" Internal Balance
  • $209.99
    Ships

    555-51617
    Big Block Chevy Harmonic Balancer/Damper
  • 8" External Balance
  • $244.99
    Ships

    555-51616
    Big Block Chevy Harmonic Balancer/Damper
  • 8" Internal Balance
  • $244.99
    Ships
    Chrysler Harmonic Balancers/Dampers

    555-51641
    Small Block Chrysler Harmonic Balancer/Damper
  • External Balance
  • $282.99
    Ships

    555-51640
    Small Block Chrysler Harmonic Balancer/Damper
  • Internal Balance
  • $199.99
    Ships

    555-51645
    Hemi Harmonic Balancer/Damper
  • 2005-08 5.7L (excluding Ram)
  • 2006-10 6.1L (excluding Ram)
  • 25% Underdrive Pulley
  • click 'Details/More info' for applications
  • $230.95
    Ships
    Ford Harmonic Balancers/Dampers

    555-51630
    Small Block Ford 302 HO Harmonic Balancer/Damper
  • 6.37" External Balance
  • 4-Bolt
  • 50oz
  • $203.99
    Ships

    555-51631
    Small Block Ford 302-351W Harmonic Balancer/Damper
  • 6.5" External Balance
  • 4-Bolt
  • 28oz
  • $203.99
    Ships

    555-51632
    Small Block Ford 302-351W Lightweight Harmonic Balancer/Damper
  • 6.125" Internal Balance
  • 4-Bolt
  • 8.0 lbs.
  • $163.99
    Ships

    555-51634
    Big Block Ford 429-460 Harmonic Balancer/Damper
  • 6.76" Internal Balance
  • 4-Bolt
  • $209.99
    Ships
    Pontiac Harmonic Balancers/Dampers

    555-51625
    Pontiac Harmonic Balancer/Damper
  • Pontiac 326-455 (Uses 1968-Up 4-Bolt Pulley Pattern)
  • 6.76" Internal Balance
  • $173.99
    Ships

    16 Products