Dorman 594-031 Engine Harmonic Balancer

Dorman 594-031 Harmonic Balancer

Dorman 594-031 is a direct replacement engine harmonic balancer for select Chevrolet and GMC applications. 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.

Built for vehicles with a 2-groove pulley and serpentine drive belt setup, this balancer includes degree markings for timing reference and comes with a silver finish. It is a practical choice for restoring smooth crankshaft operation on classic Chevrolet C10, C20, K20, Impala, and GMC C1500 applications.

Key Features

• Direct replacement harmonic balancer for engine vibration control
• Stress-resistant rubber bond helps isolate crankshaft vibration
• Ductile steel construction for added strength and durability
• Degree markings for timing setup and reference
• 2-groove pulley design with serpentine belt compatibility
• Includes bolt and washer; package also contains balancer, 2 Woodruff keys, and instruction sheet
• Part number 594-031 for easy identification

Detailed Description

This Dorman harmonic balancer is engineered for select Chevrolet and GMC trucks, vans, and full-size cars that require a 2-groove pulley configuration. It is commonly used on applications such as Chevrolet C10, C20, K20, P30, Impala, and GMC C1500, C2500, and K3500 models across the listed years. The rubber bond helps absorb torsional vibration from the crankshaft, while the steel body supports durability under engine load. If you are replacing a worn or cracked balancer on a 1962-1995 Chevrolet or GMC engine application, Dorman 594-031 provides a direct-fit service part with timing marks for setup accuracy. This part cross-references PowerBond by Dayco PB1449N for the same application.

What It Helps Address

• Crankshaft vibration felt through the engine
• Visible cracking or separation in the balancer ring
• Timing reference issues during engine service
• Noise or imbalance related to a failing harmonic balancer
• Wear on older 2-groove pulley engine setups

Installation Notes and Tips

Verify inside diameter, outside diameter, and depth before installation to confirm crankshaft fitment. Use the included Woodruff keys and follow the instruction sheet for proper alignment. Check pulley groove count and belt routing on the vehicle before final assembly. Confirm degree markings are positioned correctly for timing service on the engine.

Quality Assurance

Dorman manufactures this replacement balancer with ductile steel construction and a vibration-absorbing rubber bond to support dependable service in demanding engine applications. Part number 594-031 is built for the listed Chevrolet and GMC fitments and is intended to match the original-style function of the factory component.