Dorman 594-309 Engine Harmonic Balancer

Overview of Dorman Engine Harmonic Balancer 594-309

The Dorman 594-309 engine harmonic balancer is designed for reliable performance in various GM and Saab vehicles. Engineered to reduce vibration and protect your engine, this balancer is compatible with models such as the Chevrolet Malibu, Pontiac Grand Am, and Saab 9-3.

• Inside diameter: 28.03 mm
• Outside diameter: 166 mm
• Six pulley grooves for serpentine drive belts
• Single mounting hole design
• Includes bolt and washer; center bolt not included
• Black finish with degree markings for precise installation
• Package includes balancer, woodruff key, and instruction sheet
• Depth of 60 mm for proper fitment

Detailed Product Description

The Dorman 594-309 engine harmonic balancer is a critical component in the engine block assembly, designed to dampen torsional vibrations from the crankshaft. With an inside diameter of 28.03 mm and an outside diameter of 166 mm, this balancer fits a range of vehicles including Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Saab, and Saturn models. Its six pulley grooves accommodate serpentine drive belts, ensuring compatibility with modern accessory drive systems. The balancer features a single mounting hole and comes with a bolt and washer for secure installation, although the center bolt is not included. The black finish and degree markings assist in accurate alignment during installation. The package also contains a woodruff key and an instruction sheet to guide proper setup.

Compatible Vehicles and Applications

This engine harmonic balancer is compatible with multiple GM and Saab vehicles, including but not limited to:

• Buick LaCrosse, Regal, Verano
• Chevrolet Malibu, Cobalt, Equinox, HHR
• GMC Terrain
• Oldsmobile Alero, Aurora
• Pontiac Grand Am, G6, Sunfire
• Saab 9-3
• Saturn Aura, Ion, Vue

Common Issues Addressed by This Harmonic Balancer

• Reduces crankshaft vibration to prevent engine damage
• Prevents premature wear of belts and pulleys
• Maintains proper timing and accessory drive alignment
• Eliminates engine noise caused by imbalance
• Helps avoid costly repairs related to crankshaft failure

Installation Notes and Tips

• Verify the inside diameter and pulley groove count match your vehicle’s specifications
• Use the included bolt and washer for mounting; source the center bolt separately if required
• Align degree markings carefully to ensure correct timing and balance
• Consult the instruction sheet for step-by-step installation guidance
• Inspect the woodruff key slot and replace the key if worn

Quality Assurance and Warranty

Dorman engine harmonic balancers are manufactured to meet or exceed OEM standards for fit, form, and function. The 594-309 part number undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Refer to Dorman’s official documentation for exact warranty terms.