Dayco PB1260N Engine Harmonic Balancer

Dayco PB1260N Harmonic Balancer Overview

The Dayco PB1260N is a premium OEM replacement harmonic balancer built for select Mitsubishi applications. It is a neutral-balance unit with timing marks, dual integrated serpentine pulleys, and a cast iron outer ring for dependable crankshaft damping and accessory drive alignment.

Compatible with 1989-1993 Mitsubishi Galant and 1992 Mitsubishi Expo, this Dayco PB1260N balancer is a direct-fit engine component for vehicles using a 4-bolt crankshaft interface. It is a practical choice when replacing a worn or damaged balancer on a Mitsubishi Galant or Mitsubishi Expo.

Key Features

• Brand: Dayco Premium OEM Replacement Balancer
• Part number: PB1260N
• Neutral balance design with no counterweight
• Cast iron outer ring for durability
• Two integrated serpentine pulleys
• Timing marks included
• 4-bolt hole quantity
• Crank bore: 1.581 in. / 40.15 mm
• Overall outside diameter: 6.221 in. / 158.00 mm
• Overall width: 1.575 in. / 40.00 mm

Product Details

The PB1260N is engineered as an OE-style harmonic balancer for engine vibration control and accessory drive support. Its dual pulley setup includes a 4-groove serpentine pulley at 5.867 in. outside diameter and a second 4-groove serpentine pulley at 6.142 in. outside diameter, helping maintain proper belt routing on the supported Mitsubishi Galant and Mitsubishi Expo applications. The cast iron outer ring and timing marks make it a straightforward replacement for service work where the original balancer has worn, cracked, or lost accuracy.

This part cross-references ATP 102305 and Pioneer DA-161 for the same application.

Common Problems This Part Can Address

• Crankshaft vibration from a deteriorated harmonic balancer
• Visible cracking or separation in the original balancer ring
• Incorrect timing reference due to worn timing marks
• Belt tracking issues related to pulley wear or damage
• Accessory drive noise caused by a failing balancer assembly

Installation Notes

Verify crank bore, bolt pattern, pulley alignment, and timing mark orientation before installation. Hardware, installation instructions, and woodruff key are not included. Because this is a neutral-balance balancer, confirm the engine’s balance specification matches the part before assembly. Proper torque and alignment procedures should be followed during installation on compatible Mitsubishi Galant and Mitsubishi Expo engines.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is positioned as an OE-style service solution for engine repair and maintenance. The PB1260N is built with the listed dimensions and pulley configuration to support accurate replacement on the specified Mitsubishi applications.