Dorman 594-563 Engine Harmonic Balancer

Dorman 594-563 Harmonic Balancer

The Dorman 594-563 harmonic balancer is a direct replacement engine component for vehicles that need reliable vibration control at the crankshaft. It uses a stress-resistant rubber bond and ductile steel construction to help absorb engine vibration while maintaining strength under load.

• Direct replacement harmonic balancer for OE-style service
• Stress-resistant rubber bond helps absorb engine vibration
• Ductile steel construction for tensile and impact strength
• 6-groove serpentine belt design
• Black finish with degree markings for timing reference
• Keyway type: yes

Detailed Application and Design

This engine harmonic balancer, part number 594-563, is built for select Buick Allure and LaCrosse, Chevrolet Impala and Monte Carlo, and Pontiac Grand Prix applications. It is a practical replacement for worn or damaged balancers on 2005-2009 vehicles where crankshaft vibration control and belt drive alignment are important. The 205 mm outside diameter, 37.615 inside diameter, and 36 mm depth support a precise OE-style fit, while the single mounting hole and degree markings aid installation and timing reference.

This part cross-references OE number 12568921 for the same application.

Common Problems This Part Can Help Address

• Crankshaft vibration felt through the engine or accessory drive
• Rubber bond deterioration in the original harmonic balancer
• Visible wear, cracking, or separation at the balancer hub
• Belt tracking or accessory drive concerns related to balancer wear
• Timing reference issues when degree markings are no longer readable

Installation Notes and Tips

Verify pulley groove count, inside diameter, and depth before installation to confirm match with the original unit. Inspect the crankshaft snout, keyway, and surrounding components for wear or damage before mounting the balancer. Bolt and washer are not included, and the center bolt is not included, so reuse or source the correct hardware as required by the vehicle service procedure.

• Fits 2008-2009 Buick Allure, N/A
• Fits 2008-2009 Buick LaCrosse, N/A
• Fits 2006-2009 Chevrolet Impala, N/A
• Fits 2005-2008 Pontiac Grand Prix, N/A
• Fits 2006-2007 Chevrolet Monte Carlo, N/A

Quality Assurance

Dorman manufactures this harmonic balancer as a direct replacement part with materials selected for durability and vibration control. The ductile steel body and bonded rubber construction are used to support dependable service in the listed Buick, Chevrolet, and Pontiac applications.