PROFORM 66506 Harmonic Balancer for Small Block Mopar, 7.250-Inch External Balance

The PROFORM 66506 Harmonic Balancer is an OE replacement component designed for small block Mopar engines requiring an externally balanced crankshaft system. Its 7.250-inch outside diameter supports proper fitment in compatible applications while helping control crankshaft torsional vibrations for dependable engine operation. This harmonic balancer is supplied as a complete replacement unit for builders, restorers, and performance enthusiasts seeking reliable engine hardware.
Constructed from durable iron with a natural finish, the PROFORM 66506 combines practical strength with an original-equipment-style design. The integrated counterweight is engineered for external balance applications, making correct engine compatibility essential before installation. Its conventional configuration allows it to serve as a replacement for a worn, damaged, or aging harmonic balancer in the appropriate small block Mopar assembly.
For best results, verify crankshaft balance requirements, timing mark location, pulley alignment, and clearance against the vehicle or engine manufacturer’s specifications before installation. Professional installation is recommended, including proper crankshaft snout inspection and fastener torque procedures. The PROFORM 66506 Harmonic Balancer is sold individually and provides a dependable solution for maintaining the balance and vibration-control performance of compatible Chrysler small block Mopar engines.

Features:

• Brand: PROFORM

• Part Number: 66506

• Application: Small block Mopar engines

• Type: OE replacement harmonic balancer

• Outside Diameter: 7.250 inches

• Material: Iron

• Finish: Natural

• Balance Type: External balance

• Counterweight: Integrated counterweight design

• Quantity: Sold individually