Chrysler Counter Weight Harmonic Balancer

The Chrysler Counter Weight Harmonic Balancer by PROFORM is a precision OE replacement component engineered for small block Mopar engines requiring external balance correction. As a seasoned mechanic, you know that a harmonic balancer does far more than absorb vibration—it's critical to engine longevity and performance stability. This balancer is purpose-built for Chrysler platforms where counter-weighting compensates for external balance design, eliminating vibration harmonics that can accelerate wear on main bearings, crankshaft journals, and front seals.

Manufactured from iron with a 7.250-inch outer diameter, this harmonic balancer delivers the mass and damping characteristics identical to OEM specifications for small block Mopar applications. The external balance design means the counter weights are positioned on the outside diameter, a critical distinction from internal balance systems—proper matching ensures smooth idle, reduced vibration under load, and protection against crankshaft fatigue. At 9.54 pounds and measuring 8.55 x 3.45 x 8.65 inches, it integrates seamlessly with factory harmonic dampers and pulley systems, requiring no modifications to engine bay components or belt routing.

This component is essential for any small block Mopar rebuild, stroker conversion, or engine swap where external balance is the factory design standard. Whether you're restoring a classic Dodge, Plymouth, or Chrysler, or upgrading an original engine to current performance standards, running an unmatched or worn balancer invites catastrophic crankshaft failure. Installation is straightforward for experienced technicians—simply remove the old balancer, key it onto the crankshaft snout, and torque to spec. PROFORM's reputation for precision manufacturing ensures this balancer will maintain perfect runout and damping performance for years of reliable service.