Dorman 594-717 Engine Harmonic Balancer

Reliable Engine Harmonic Balancer for Chevrolet and GMC Trucks

The Dorman 594-717 engine harmonic balancer is designed to provide precise vibration dampening for heavy-duty Chevrolet and GMC trucks. Engineered to meet the demands of models like the Silverado 2500 HD and Sierra 3500 HD, this component helps maintain engine stability and performance.

• Inside diameter: 40 mm for accurate fitment
• Outside diameter: 198 mm ensuring proper pulley alignment
• Six pulley grooves compatible with serpentine drive belts
• Single mounting hole with 49 mm diameter for secure installation
• Includes a keyway for correct positioning on the crankshaft
• Depth of 51 mm to match OEM specifications
• Finished in black for corrosion resistance
• Compatible with Chevrolet Express 2500, Express 3500, GMC Savana 2500, Savana 3500, Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD

Product Details and Specifications

The Dorman 594-717 harmonic balancer is a regular grade type component designed to reduce torsional vibration in the engine crankshaft. Its six-groove pulley accommodates serpentine belts commonly used in heavy-duty trucks, ensuring smooth power transmission to engine accessories. The single mounting hole with a 49 mm diameter and the included keyway provide a secure and precise fit on the crankshaft, preventing slippage during operation. The balancer’s 198 mm outside diameter and 51 mm depth are engineered to match factory specifications, maintaining proper engine timing and accessory drive alignment.

Compatible Vehicles and Applications

• Chevrolet Express 2500 and Express 3500
• GMC Savana 2500 and Savana 3500
• Chevrolet Silverado 2500 HD and Silverado 3500 HD
• GMC Sierra 2500 HD and Sierra 3500 HD

This harmonic balancer is specifically designed for these models, ensuring compatibility and reliable performance in demanding driving conditions.

Common Issues Addressed by This Harmonic Balancer

• Engine vibration and noise caused by crankshaft torsional forces
• Premature wear of engine components due to imbalance
• Misalignment of serpentine belt drive system
• Reduced engine efficiency and accessory performance
• Potential crankshaft damage from excessive vibration

Installation Notes and Tips

Ensure the crankshaft and mounting surfaces are clean and free of debris before installation. Verify the keyway alignment to prevent improper seating. This part does not include mounting bolts or washers, so use the original hardware or appropriate replacements. Torque specifications should follow manufacturer guidelines to avoid damage or loosening during operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 594-717 harmonic balancer undergoes rigorous quality control to ensure durability and performance. Warranty coverage details should be confirmed with the product documentation or supplier.