Dayco PB1643N Engine Harmonic Balancer

Dayco PB1643N Harmonic Balancer

The Dayco PB1643N is a premium OEM replacement harmonic balancer for select Dodge Ram heavy-duty trucks. Built for 2003-2009 Dodge Ram 2500 and 2003-2008 Dodge Ram 3500 applications, it supports crankshaft damping and accessory drive stability in demanding engine environments.

Key Features

• Premium OEM Replacement Balancer from Dayco
• Fits 2003-2009 Dodge Ram 2500 and 2003-2008 Dodge Ram 3500
• Neutral balance design with no counterweight
• Cast iron outer ring for durable engine service
• Integrated serpentine pulley with 8 grooves
• Timing marks included for service alignment
• Overall outside diameter: 8.741 in. (222 mm)
• Overall width: 1.959 in. (49.75 mm)

Product Details

Dayco’s Premium OEM Replacement Balancer line focuses on direct-fit engine components built to match original equipment requirements. The PB1643N harmonic balancer uses a neutral counterweight balance, a cast iron outer ring, and a single integrated serpentine pulley to help maintain consistent belt operation while damping crankshaft vibration. This Dayco PB1643N is a direct replacement choice for Dodge Ram 2500 and Dodge Ram 3500 trucks that require a balancer with timing marks and a 4-bolt hole pattern.

This part cross-references Dorman 594-356 for the same application.

Common Issues This Part Can Address

• Crankshaft vibration caused by a worn or separated balancer
• Belt tracking problems related to pulley wear
• Timing mark visibility issues during engine service
• Noise from a deteriorated harmonic balancer assembly
• Accessory drive instability on high-mileage engines

Installation Notes and Tips

Verify crankshaft and pulley alignment before installation, and confirm the 4-bolt hole pattern matches the original component. Because hardware and installation instructions are not included, reuse or source the correct service hardware and follow the vehicle service manual for torque and alignment procedures. Confirm the serpentine belt routing and timing mark position before returning the vehicle to service.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for direct replacement use in engine service applications. Confirm fitment by year, model, and engine configuration before ordering the PB1643N.