Dorman 594-312 Engine Harmonic Balancer

Engine Harmonic Balancer for Buick and Pontiac

Dorman 594-312 is a direct replacement engine harmonic balancer built for Buick and Pontiac applications that need reliable vibration control and OE-style fitment. It uses a stress-resistant rubber bond to help absorb engine vibration, while ductile steel construction adds tensile and impact strength for long-term durability.

Key Features

• Direct replacement harmonic balancer for select Buick and Pontiac vehicles
• Stress-resistant rubber bond helps absorb crankshaft vibration
• Ductile steel construction for added strength and durability
• 6-groove design for serpentine drive belt systems
• Black finish with bolt and washer included
• Package contents include the harmonic balancer and Woodruff key
• Part number 594-312 for easy identification

Detailed Description

This Dorman harmonic balancer is engineered for engines that rely on stable crankshaft damping to reduce vibration and protect rotating components. The 181.8 mm outside diameter, 28.95 mm inside diameter, and 92.4 mm depth support proper OE-style fitment, while the single mounting hole and 6 pulley grooves match serpentine belt configurations. For buyers searching for a Buick LeSabre harmonic balancer replacement, Pontiac Bonneville crankshaft pulley damper, or Dorman 594-312 for Buick Park Avenue and Grand Prix applications, this part provides a direct replacement solution. This part cross-references ATP 102284 for the same application.

Vehicle Fitment

• Fits 2005-2009 Buick Allure, N/A
• Fits 2005-2009 Buick LaCrosse, N/A
• Fits 2006-2008 Buick Lucerne, N/A
• Fits 2004-2008 Pontiac Grand Prix, N/A
• Fits 2000-2005 Buick LeSabre, N/A
• Fits 2000-2005 Buick Park Avenue, N/A
• Fits 2000-2005 Pontiac Bonneville, N/A

What It Helps Address

• Crankshaft vibration from a worn or damaged balancer
• Serpentine belt drive instability caused by pulley wear
• Noise or imbalance from a deteriorated rubber isolator
• Fitment issues when replacing an OE-style harmonic balancer
• Durability concerns in high-load engine operation

Installation Notes and Tips

Verify pulley groove count, inside diameter, outside diameter, and depth against the original part before installation. Confirm the Woodruff key is properly seated and inspect the crankshaft snout, bolt threads, and belt alignment during service. Use the correct torque procedure for the engine application and check for smooth belt tracking after installation.

Quality Assurance

Dorman manufactures this harmonic balancer as a direct replacement component with materials selected for vibration control and durability. The ductile steel body and bonded rubber isolator are built to meet the demands of everyday engine operation in compatible Buick and Pontiac applications.