Dayco PB1117N Engine Harmonic Balancer

Dayco PB1117N Harmonic Balancer

The Dayco PB1117N is a premium OEM replacement harmonic balancer for select GM V8 applications. It is built with a neutral balance design, a cast iron outer ring, and dual integrated serpentine pulleys for dependable crankshaft vibration control and accessory drive alignment.

Key Features

• Premium OEM Replacement Balancer from Dayco
• Neutral balance design with no counterweight
• Cast iron outer ring for durable construction
• Two integrated serpentine pulleys: 6-groove and 4-groove
• Crank bore: 1.481 in. / 37.60 mm
• Overall outside diameter: 7.520 in. / 191.00 mm
• Overall width: 2.823 in. / 71.70 mm
• Installation instructions included

Product Details

Dayco Premium OEM Replacement Balancer parts are built for direct-fit service on applications that require OE-style dimensions and pulley layout. The PB1117N harmonic balancer uses a neutral counterweight balance, a cast iron outer ring, and dual serpentine pulley sections to support crankshaft damping and belt drive operation. This part cross-references ATP 102120 for the same application. It is a direct replacement choice for Chevrolet Corvette, Chevrolet Caprice, Chevrolet SS, Cadillac CTS, and Pontiac G8 applications listed below, and the Dayco PB1117N part number is commonly searched for these GM engine repair needs.

Common Issues This Part Can Help Address

• Crankshaft vibration from a worn or separated balancer
• Belt tracking problems caused by pulley wear or misalignment
• Accessory drive noise related to damaged pulley surfaces
• Visible cracking, wobble, or deterioration in the harmonic balancer
• Loss of proper engine damping at the crankshaft

Installation Notes

• Verify crank bore, nose diameter, and pulley configuration before installation.
• Use the included installation instructions for proper setup.
• Hardware is not included.
• No timing marks, crank trigger/exciter plate, or woodruff key are included.
• Confirm neutral balance requirements for the engine application before service.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built to match OE-style fitment and service requirements for repair work on GM applications. Compatible With 1997-2013 Chevrolet Corvette, 2004-2007 Cadillac CTS, 2008-2009 Pontiac G8, 2011-2017 Chevrolet Caprice, and 2014-2017 Chevrolet SS. The Dayco PB1117N is specified for direct replacement use where the original harmonic balancer uses dual serpentine pulley drive geometry.