HomeEngine > Cylinder Block ComponentsDorman 594-424 Engine Harmonic Balancer
Part #: 594-424

Dorman 594-424 Engine Harmonic Balancer

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⚙️ 12 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Pontiac and Buick, Grand Prix, Park Avenue, and Bonneville
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Overview of Dorman Engine Harmonic Balancer 594-424

The Dorman Engine Harmonic Balancer 594-424 is designed for reliable performance in select Buick and Pontiac vehicles. Engineered to meet OEM specifications, this harmonic balancer helps maintain engine smoothness and reduce vibration in models like the Buick Park Avenue and Pontiac Grand Prix.

  • Inside diameter: 28.95 mm
  • Outside diameter: 182 mm
  • Depth: 92.8 mm
  • Six pulley grooves for serpentine drive belts
  • Single mounting hole design
  • Black finish for corrosion resistance
  • Includes harmonic balancer, key, and instruction sheet
  • Does not include bolt, washer, or center bolt

Detailed Product Description

This Dorman harmonic balancer (part number 594-424) is specifically engineered for use with serpentine drive belt systems, featuring six pulley grooves to accommodate multiple belt configurations. The balancer’s 28.95 mm inside diameter and 182 mm outside diameter ensure a precise fit on the crankshaft, while the 92.8 mm depth provides the necessary mass to dampen engine vibrations effectively. Its single mounting hole design simplifies installation, and the black finish offers durability against environmental factors. This component is compatible with Buick Bonneville, Pontiac Grand Prix, and Buick Park Avenue models, providing a direct replacement that supports engine longevity and smooth operation.

Common Applications and Problem Resolution

  • Reduces crankshaft vibration and engine noise
  • Prevents premature wear of engine components
  • Maintains proper alignment of serpentine drive belts
  • Addresses issues related to pulley misalignment or damage
  • Helps avoid engine performance problems caused by harmonic imbalance

Installation Notes and Tips

  • Ensure the crankshaft and mounting surfaces are clean before installation
  • Use the included key to align the balancer correctly on the crankshaft
  • Torque mounting hardware to manufacturer specifications (note: bolt and washer not included)
  • Verify serpentine belt routing and tension after installation
  • Consult the instruction sheet provided for detailed installation guidance

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, ensuring reliable fit and function. While this harmonic balancer does not include mounting hardware, it is backed by Dorman’s quality control processes. Please refer to Dorman’s official warranty policy for coverage details.

BrandDorman
Part Number594-424
Bolt And Washer IncludedNo
Center Bolt IncludedNo
Color/FinishBlack
Degree MarkingsNo
Depth92.8
Drive Belt TypeSerpentine
Grade TypeRegular
Inside Diameter28.95
Mounting Hole Quantity1
Outside Diameter182
Package ContentsHarmonic Balancer; Key; Instruction Sheet
Pulley Groove Quantity6

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007PontiacGrand Prix3.8LV6N/A
2006PontiacGrand Prix3.8LV6N/A
2005BuickPark Avenue3.8LV6N/A
2005PontiacGrand Prix3.8LV6N/A
2004BuickPark Avenue3.8LV6N/A
2004PontiacGrand Prix3.8LV6N/A
2003BuickPark Avenue3.8LV6N/A
2003PontiacBonneville3.8LV6N/A
2002BuickPark Avenue3.8LV6N/A
2002PontiacBonneville3.8LV6N/A
2001BuickPark Avenue3.8LV6N/A
2001PontiacBonneville3.8LV6N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

12563266PB1355N

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.