Dorman 594-001 Engine Harmonic Balancer

Dorman 594-001 Harmonic Balancer

Dorman 594-001 is a direct replacement engine harmonic balancer for select Buick, Oldsmobile, and Pontiac applications from 1988-1990. It uses a stress-resistant rubber bond to absorb engine vibration, while ductile steel construction adds tensile and impact strength for dependable service.

Key Features

• Direct replacement harmonic balancer for OE-style fit and function
• Stress-resistant rubber bond helps absorb crankshaft vibration
• Ductile steel construction for added durability
• 6-groove serpentine belt pulley design
• Degree markings for timing reference
• Black finish with bolt, Woodruff key, and instruction sheet in the package contents
• Inside diameter: 34.94 mm; outside diameter: 182 mm; depth: 92.5 mm

Detailed Description

This Dorman harmonic balancer 594-001 is built for engines that need stable vibration control and accurate accessory drive operation. It is a direct replacement for applications including 1988-1990 Buick LeSabre, Buick Reatta, Buick Riviera, Oldsmobile 98, Oldsmobile Delta 88, Oldsmobile Toronado, and Pontiac Bonneville. The 6-groove serpentine layout, single mounting hole, and degree markings support proper alignment and timing checks during service. This part cross-references ATP 102068 for the same application.

What It Helps Address

• Crankshaft vibration that can affect engine smoothness
• Worn or damaged harmonic balancer rubber bond
• Accessory drive imbalance or pulley runout concerns
• Timing reference visibility during engine service
• Replacement needs on Buick, Oldsmobile, and Pontiac V6/V8 applications using this balancer style

Installation Notes and Tips

Verify the inside diameter, outside diameter, depth, groove count, and degree markings against the original balancer before installation. Confirm serpentine belt routing and pulley alignment, and inspect the crankshaft snout, Woodruff key, and mounting surfaces for wear or damage. Use the included bolt and key as specified by the service procedure, and follow the instruction sheet for proper torque and alignment.

Quality Assurance

Dorman manufactures this balancer as a direct replacement component with ductile steel construction and a vibration-absorbing rubber bond for consistent service performance. Part number 594-001 is also referenced by PowerBond by Dayco PB1074N for the same application.