This harmonic balancer and belt drive pulley is a new, aftermarket replacement part. This dampener pulley mounts to the front of the engine on the crankshaft, and is used to dampen engine vibration.


  • Brand new
  • Replaces dealer part numbers: 12303-AL501, 12303AL501      
  • Direct bolt on replacement
  • Built to strict quality control standards

This replacement harmonic balancer is an excellent replacement for your worn or damaged original and has substantial cost savings over a dealer part.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

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Vehicle Fit

  • 2003-2008 Infiniti FX35 Harmonic Balancer Dorman 594-345
  • 2011-2012 Infiniti G25 Harmonic Balancer Dorman 594-345
  • 2003-2006 Infiniti G35 Harmonic Balancer Dorman 594-345
  • 2007 Infiniti G35 Coupe Harmonic Balancer Dorman 594-345
  • 2006-2008 Infiniti M35 Harmonic Balancer Dorman 594-345
  • 2003-2006 Nissan 350Z Harmonic Balancer Dorman 594-345
  • 2003-2004 Nissan Pathfinder Harmonic Balancer Dorman 594-345

This part replaces:

  • Hollander 309-50455
  • OE # 12303AL501
  • Dorman 594-345
Only 2 left in stock
Part #: 1AEHB00201

Ships Same Day for orders placed by 4 P.M. ET

Brand #: 594-345