Dorman 594-026 Engine Harmonic Balancer

Dorman 594-026 Harmonic Balancer

This Dorman harmonic balancer is a direct replacement for select Chevrolet and GMC trucks and vans from 1991-1993. It is built to help absorb engine vibration while supporting dependable crankshaft operation in demanding V8 applications.

• Direct replacement harmonic balancer for select GM applications
• Stress-resistant rubber bond helps absorb engine vibration
• Ductile steel construction for tensile strength and impact resistance
• Black finish with degree markings for timing reference
• Serpentine drive belt type with one mounting hole
• Bolt and washer included; center bolt not included

Detailed Product Overview

Part number 594-026 is engineered for engines that need a balanced combination of vibration control and durability. The ductile steel body provides a strong foundation, while the bonded rubber element helps isolate torsional vibration before it reaches the crankshaft and accessory drive. With an outside diameter of 166 mm, an inside diameter of 35.3 mm, and a depth of 89 mm, this balancer is built to match the listed application requirements. Degree markings are included to support timing checks during service.

Compatible With 1991-1993 Chevrolet C1500, 1991-1993 Chevrolet C2500, 1992-1993 Chevrolet C2500 Suburban, 1991-1993 Chevrolet C3500, 1991-1993 Chevrolet G30, 1991-1993 Chevrolet K2500, 1992-1993 Chevrolet K2500 Suburban, 1991-1993 Chevrolet K3500, 1991-1993 Chevrolet P30, 1991-1993 GMC C2500, 1992-1993 GMC C2500 Suburban, 1991-1993 GMC C3500, 1991-1993 GMC G3500, 1991-1993 GMC K2500, 1992-1993 GMC K2500 Suburban, 1991-1993 GMC K3500, 1991-1993 GMC P3500, 1991 Chevrolet R2500 Suburban, 1991 Chevrolet R3500, 1991 Chevrolet V3500, 1991 GMC R2500 Suburban, 1991 GMC R3500, and 1991 GMC V3500.

This part cross-references PowerBond by Dayco (e.g., PB1451N) for the same application.

Common Uses

• Engine vibration at idle or under load
• Timing mark visibility during ignition service
• Crankshaft harmonic control in high-mileage GM truck engines
• Accessory drive instability related to a worn balancer
• Replacement of a deteriorated rubber-bonded harmonic balancer

Installation Notes

Verify crankshaft snout diameter, pulley alignment, and belt system configuration before installation. Use the included bolt and washer as specified by the application, and confirm the degree markings are oriented for easy timing reference. Because this is a direct replacement part, proper seating and torque are important for reliable operation.

Quality Assurance

Dorman designs this harmonic balancer as a direct replacement component with materials selected for durability and vibration control. The ductile steel construction and stress-resistant rubber bond are intended to support long-term service in compatible Chevrolet and GMC applications.