Dorman 594-122 Engine Harmonic Balancer

Overview of Dorman Engine Harmonic Balancer 594-122

The Dorman 594-122 engine harmonic balancer is designed for select Buick, Chevrolet, Oldsmobile, and Pontiac models. This component helps reduce engine vibration and maintain smooth operation in vehicles such as the Chevrolet Impala and Pontiac Grand Prix.

• Inside diameter: 34.87 mm
• Outside diameter: 182 mm
• 12 pulley grooves for serpentine drive belts
• Single mounting hole design
• Includes bolt and washer; center bolt not included
• Depth of 92.5 mm
• Black finish with degree markings for precise installation
• Package includes balancer, woodruff key, and instruction sheet

Detailed Product Description

The Dorman 594-122 engine harmonic balancer is engineered to fit a range of vehicles including Buick 88 and 98, Chevrolet Impala and Monte Carlo, Oldsmobile LSS and Riviera, as well as Pontiac Bonneville and Grand Prix. Its 12-groove pulley design supports serpentine drive belts, ensuring compatibility with modern belt systems. The balancer’s 34.87 mm inside diameter and 182 mm outside diameter provide a precise fit for the engine’s crankshaft, while the 92.5 mm depth accommodates proper alignment with other engine components. The included bolt and washer simplify installation, although the center bolt must be sourced separately. The black finish and degree markings assist technicians in achieving accurate positioning during assembly.

Common Applications and Problem Solving

• Reduces crankshaft vibration to prevent premature engine wear
• Restores proper pulley alignment for serpentine belt systems
• Eliminates noise caused by worn or damaged harmonic balancers
• Prevents engine misfires related to crankshaft sensor timing issues
• Supports smooth engine operation in Buick, Chevrolet, Oldsmobile, and Pontiac vehicles

Installation Notes and Tips

• Verify compatibility with your specific vehicle make and model before installation
• Use the included woodruff key to ensure correct crankshaft engagement
• Torque the mounting bolt and washer to manufacturer specifications
• Check degree markings for precise alignment during installation
• Center bolt is not included; obtain the correct part separately

Quality Assurance and Warranty

Dorman engine harmonic balancers are manufactured to meet or exceed OEM standards for fit and function. The 594-122 part number undergoes rigorous quality control to ensure durability and reliable performance. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in its long-term use on compatible Buick, Chevrolet, Oldsmobile, and Pontiac models.