Dayco PB1654N Engine Harmonic Balancer

Dayco PB1654N Harmonic Balancer for Tacoma and 4Runner

The Dayco PB1654N is a premium OEM replacement harmonic balancer for select Toyota applications, including the 2005-2023 Toyota Tacoma and 2010 Toyota 4Runner. It is built with a neutral balance design and a cast iron outer ring to support crankshaft vibration control and accessory drive stability.

Key Features

• Premium OEM Replacement Balancer from Dayco
• Part Number: PB1654N
• Neutral balance design with no counterweight
• Cast iron outer ring for durable construction
• Integrated serpentine pulley with 7 grooves
• Timing marks included for service alignment
• 4-bolt hole design
• Crank bore: 1.292 in. / 32.80 mm
• Overall outside diameter: 5.709 in. / 145 mm
• Overall width: 2.099 in. / 53.30 mm

Detailed Description

Dayco PB1654N is an engine harmonic balancer engineered for Toyota Tacoma and Toyota 4Runner fitments listed below. As part of Dayco’s Premium OEM Replacement Balancer line, this component follows OE-style dimensions and features a single integrated serpentine pulley, cast iron outer ring, and timing marks for accurate service work. The PB1654N is a direct-fit style replacement for applications that require neutral balance and a 4-bolt crankshaft interface.

This part cross-references Dorman 594-365 for the same application. Use PB1654N when replacing a worn or damaged harmonic balancer on a Toyota Tacoma or Toyota 4Runner where crankshaft vibration damping and belt drive alignment are needed.

What This Part Is Used For

• Replacing a cracked, worn, or out-of-round harmonic balancer
• Restoring crankshaft vibration damping on Toyota Tacoma and Toyota 4Runner engines
• Correcting serpentine belt tracking issues caused by pulley wear
• Addressing timing mark visibility problems during engine service
• Repairing noise or imbalance related to a deteriorated balancer assembly

Installation Notes and Tips

Verify crank bore, nose outside diameter, pulley groove count, and bolt-hole pattern before installation. The PB1654N does not include hardware, installation instructions, or a woodruff key, so reuse or source the required service parts as needed. Confirm timing mark orientation during installation and inspect the belt drive system for wear before returning the vehicle to service.

• Fits 2005-2023 Toyota Tacoma, N/A
• Fits 2010 Toyota 4Runner, N/A

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built to OE-style specifications for fit and function in service replacement applications. The PB1654N uses a cast iron outer ring, neutral balance configuration, and integrated serpentine pulley design to support consistent engine operation in the listed Toyota applications.