Fluidampr Steel Internal Harmonic Balancer - 6 3/8" O.D. | 1991-1998 1G / 2G DSM (630701)



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$415.65 $489.00Instant Savings of 15% ($73.35)

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Steel Internal Harmonic Balancer Pulley

You can't feel them or hear them, but harmonic vibrations are at work inside EVERY internal combustion engine. That's not good. Similar to glass-shattering forces created by a high pitched note, harmonic vibrations cause metal fatigue and can cause significant power loss because crankshaft harmonics are transmitted to the camshaft and valvetrain. Control this power-robbing force with a Fluidampr harmonic damper that uses race proven vibration damping technology. A high viscosity silicone fluid surrounds a nylon-coated inertia ring inside a laser welded housing. All dampers are coated with a black zinc chromate finish for increased corrosion resistance.


  • Bore Diameter 1.7328"
  • Degree Marking Range 2 timing marks 180 degrees apart
  • Degree Markings Engraved
  • Engine Balance Internal
  • Finish Black Zinc
  • Keyway Not Applicable
  • Length 1.807"
  • Material Steel
  • Mounting Hardware Included No
  • Outside Diameter 6-3/8"
  • Safety Rating SFI 18.1
  • Weight / Rotating Weight 7.7 lbs / 5.1 lbs


  • Reduce wear on the main bearings and timing gear
  • Achieve more accurate valvetrain operation
  • Lower the risk of crank failure


  • 1991-1998 1G / 2G DSM

What's In The Box?

  • (1) Harmonic Balancer



  • Manufacturer One Year Warranty

Customer Reviews

Based on 3 reviews
Shawn Chabot
Looks good

Looks and feels of good Quality. Had to trim cover just a hair so it didn’t rub. Not an issue though. Shipped extremely fast and was actually delivered on a Sunday. Weird.

best damper on the market for the money

you cant beat this damper for the money. very good at keeping the vibrations in check

fede t

Great quality product cant wait to install it. Thanks maperformance for you great service as allways!