Dayco PB1678N Engine Harmonic Balancer

Dayco PB1678N Harmonic Balancer for Civic

Dayco PB1678N is a Premium OEM Replacement Balancer built for the engine harmonic balancer application on select 2006-2011 Honda Civic models. It is a neutral-balance unit with timing marks, a cast iron outer ring, and a single 7-groove serpentine pulley for OE-style accessory drive alignment.

Key Features

• Fits 2006-2011 Honda Civic, N/A
• Dayco Premium OEM Replacement Balancer line
• Part number PB1678N
• Neutral balance design with no counterweight
• Cast iron outer ring for durability
• Integrated 7-groove serpentine pulley
• Timing marks included for service alignment
• Overall outside diameter: 156.00 mm (6.142 in.)
• Overall width: 61.50 mm (2.422 in.)
• Crank bore: 30.00 mm (1.182 in.)

Product Details

The Dayco PB1678N harmonic balancer is engineered as an OEM replacement for the engine cylinder block component on the 2006-2011 Honda Civic. The Premium OEM Replacement Balancer product line focuses on direct-fit service parts that match the original balancer layout, including a neutral counterweight balance, cast iron outer ring, and a serpentine pulley with seven grooves. Timing marks are included to support accurate engine service and alignment. This part number, PB1678N, is a direct reference for buyers searching for a Honda Civic harmonic balancer replacement or engine crankshaft damper service part.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Addresses

• Worn or deteriorated harmonic balancer rubber isolation
• Visible pulley wobble or belt tracking concerns
• Timing mark visibility problems during engine service
• Crankshaft vibration damping concerns at the front of the engine
• Accessory drive noise related to balancer wear

Installation Notes and Tips

Verify crank bore, nose outside diameter, pulley groove count, and overall dimensions before installation. This PB1678N harmonic balancer does not include hardware, installation instructions, or a woodruff key. The fitment note for the Honda Civic application states to review the instruction sheets before installation, so confirm the service procedure and torque specifications for the vehicle before beginning work.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for direct replacement service on select Honda Civic applications, with OE-style dimensions and timing marks to support proper engine setup. Confirm fitment against the vehicle year range and engine configuration before ordering.