Dayco PB1597N Engine Harmonic Balancer

Dayco PB1597N Harmonic Balancer

Dayco PB1597N is a premium OEM replacement harmonic balancer for GM trucks, vans, and SUVs with the listed applications. It is built with a neutral balance design, grey iron outer ring material, and timing marks for accurate service work on engines used in Chevrolet Express, Silverado, GMC Savana, Sierra, and related models.

Key Features

• Premium OEM replacement balancer from Dayco
• Neutral balance design with no counterweight
• Grey iron outer ring material for durable engine service
• Timing marks included for setup and verification
• 3-bolt hole quantity
• Crank bore: 1.245 in. / 31.60 mm
• Nose outside diameter: 1.763 in. / 44.78 mm
• Overall outside diameter: 6.142 in. / 156.00 mm
• Overall width: 2.780 in. / 70.60 mm
• Ring width: 1.280 in. / 32.49 mm

Detailed Description

The Dayco PB1597N harmonic balancer is a direct-fit engine component for a wide range of GM applications, including Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Express 1500, and GMC Savana 1500. It also covers fitments such as Chevrolet Blazer, GMC Jimmy, Chevrolet S10, GMC Sonoma, and other listed vehicles from 1992 through 2014. This part cross-references Dorman 594-181 for the same application.

As part of Dayco’s Premium OEM Replacement Balancer line, PB1597N is focused on OE-style fit and serviceability. The neutral balance configuration, integrated timing marks, and grey iron outer ring support accurate replacement when servicing the engine harmonic balancer on compatible GM platforms. Part number PB1597N is also referenced in aftermarket catalogs alongside ATP 102156 and 102248, and Pioneer DA-1736.

What It Helps Address

• Crankshaft vibration from a worn or damaged harmonic balancer
• Timing mark visibility issues during engine service
• Noise or imbalance caused by a deteriorated balancer assembly
• Fitment problems when replacing an OE-style GM balancer
• Engine service delays on Chevrolet Silverado 1500 and GMC Sierra 1500 applications

Installation Notes and Tips

Verify crank bore, nose diameter, bolt hole quantity, and overall dimensions before installation. PB1597N does not include hardware, installation instructions, a crank trigger/exciter plate, or a Woodruff key. Confirm the vehicle’s engine configuration and match the timing marks to the original service layout before final assembly. Fits 1996-2014 Chevrolet Express 1500, 1996-2014 GMC Savana 1500, 1999-2013 Chevrolet Silverado 1500, 1999-2013 GMC Sierra 1500, and the additional listed GM and Isuzu applications.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for OE-style replacement needs and dimensional consistency across the listed applications. Part number PB1597N is specified for the fitments shown above, including Chevrolet Silverado 1500, GMC Sierra 1500, and related GM platforms.