Dayco PB1720N Engine Harmonic Balancer

Dayco PB1720N Harmonic Balancer

The Dayco PB1720N is a premium OEM replacement harmonic balancer for select Ford, Lincoln, Mazda, and Mercury vehicles. It is built with a neutral balance design, a cast iron outer ring, and an integrated 6-groove serpentine pulley for direct engine accessory drive support.

Key Features

• Premium OEM Replacement Balancer from Dayco
• Neutral balance design with no counterweight
• Cast iron outer ring for durable engine service
• Integrated 6-groove serpentine pulley
• Crank trigger/exciter plate included in the balancer design
• Overall outside diameter: 155.00 mm (6.103 in.)
• Overall width: 64.00 mm (2.520 in.)
• Crank bore: 26.50 mm (1.044 in.)

Product Details

Dayco PB1720N is a harmonic balancer engineered for engine vibration control and crankshaft accessory drive alignment. The Premium OEM Replacement Balancer line focuses on direct-fit service parts for applications that require OE-style dimensions and function. This part number, PB1720N, is listed for 2009-2012 Ford Escape, 2010-2012 Ford Fusion, 2011-2012 Lincoln MKZ, 2009-2011 Mazda Tribute, 2009-2011 Mercury Mariner, and 2010-2011 Mercury Milan.

Fitment language for search: Fits 2009-2012 Ford Escape, N/A; Fits 2010-2012 Ford Fusion, N/A; Fits 2011-2012 Lincoln MKZ, N/A; Fits 2009-2011 Mazda Tribute, N/A; Fits 2009-2011 Mercury Mariner, N/A; Fits 2010-2011 Mercury Milan, N/A. The PB1720N is a direct replacement option for owners searching for a Ford Escape harmonic balancer, Ford Fusion crankshaft balancer, or Mercury Mariner engine harmonic balancer.

Common Problems This Part Addresses

• Crankshaft vibration from a worn or damaged balancer
• Belt tracking issues related to pulley wear or runout
• Accessory drive noise caused by a failing harmonic balancer
• Timing signal concerns where the crank trigger/exciter plate is part of the system
• Fitment issues when replacing an OE-style balancer on listed Ford, Lincoln, Mazda, or Mercury models

Installation Notes

Verify crank bore, overall diameter, and pulley groove count before installation. This balancer does not include hardware, installation instructions, timing marks, or a woodruff key. Use the vehicle service procedure and torque specifications for the specific engine application, and inspect the crankshaft snout, belt condition, and adjacent accessory components during replacement.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for service applications that require OE-style fit and function. Part number PB1720N is specified with a neutral balance configuration, cast iron outer ring, and integrated serpentine pulley dimensions that match the listed applications.