Dorman 594-220 Engine Harmonic Balancer

Overview of the Dorman 594-220 Engine Harmonic Balancer

The Dorman 594-220 engine harmonic balancer is designed to provide reliable vibration dampening for select GM and Isuzu vehicles. Engineered with precise dimensions and a serpentine drive belt compatibility, this balancer supports smooth engine operation in models like the Chevrolet Trailblazer and Buick Rainier.

• Inside diameter: 31.95 mm for accurate fitment
• Outside diameter: 206.5 mm ensuring proper pulley alignment
• Depth: 56 mm for correct mounting clearance
• Single mounting hole design for secure installation
• Compatible with serpentine drive belt systems
• Black finish for corrosion resistance
• Includes balancer and instruction sheet; no bolts or washers included

Detailed Product Description

This Dorman engine harmonic balancer (part number 594-220) is manufactured to meet the specifications required for a range of vehicles including Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models. It features a regular grade type construction that balances durability with cost-effectiveness. The balancer’s 31.95 mm inside diameter and 206.5 mm outside diameter ensure compatibility with the crankshaft and accessory drive components. Designed for serpentine belt systems, it supports proper belt tension and alignment, reducing engine vibration and wear.

Compatible Vehicles and Applications

This harmonic balancer is compatible with the following vehicles:

• Buick Rainier
• Chevrolet Trailblazer, Trailblazer EXT
• GMC Envoy, Envoy XL, Envoy XUV
• Isuzu Ascender, Bravada
• Oldsmobile models
• Saab 9-7x

Common Issues Addressed by the Harmonic Balancer

• Reduces crankshaft vibration to prevent premature engine wear
• Maintains serpentine belt alignment to avoid belt slippage or damage
• Prevents engine noise caused by imbalance
• Helps avoid damage to timing components linked to crankshaft oscillations
• Supports overall engine smoothness and longevity

Installation Notes and Tips

• Ensure the crankshaft and mounting surfaces are clean before installation
• Verify the inside diameter matches the crankshaft for a secure fit
• Use proper torque specifications for the mounting bolt (not included)
• Check serpentine belt routing and tension after installation
• Refer to the included instruction sheet for detailed guidance

Quality Assurance and Warranty

Dorman engine harmonic balancers are manufactured to meet OEM standards for fit and function. While this product does not include mounting hardware, it is backed by Dorman’s quality control processes to ensure durability and performance. Please consult Dorman’s warranty policy for specific coverage details.