Dayco PB1798N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1798N

The Dayco Premium OEM Replacement Balancer PB1798N is engineered for precise fitment and reliable performance in select BMW models. Designed as an engine harmonic balancer, it helps maintain engine smoothness and reduce vibration for vehicles such as the BMW 228i, 320i, 328i, 428i, 528i, X1, X3, X4, and Z4.

• 6 bolt hole quantity for secure mounting
• Neutral counterweight balance with no additional counterweights
• Crank bore diameter of 1.378 inches (35.00 mm)
• Single integrated serpentine pulley with 6 grooves
• Cast iron outer ring for durability
• Overall outside diameter of 145.00 mm (5.709 inches)
• Overall width of 35.50 mm (1.398 inches)
• No crank trigger/exciter plate included
• Hardware and installation instructions not included
• No timing marks or Woodruff key included

About the Premium OEM Replacement Balancer Product Line

The Dayco Premium OEM Replacement Balancer line is designed to meet original equipment specifications, providing a direct replacement for worn or damaged harmonic balancers. This product line focuses on maintaining engine balance and reducing vibration without altering the original engine dynamics. The PB1798N model is part of this line, ensuring compatibility and performance consistent with factory standards for BMW engines.

Detailed Product Description

The PB1798N engine harmonic balancer features a cast iron outer ring that offers strength and resistance to wear. Its neutral counterweight balance means it does not add or subtract from the engine’s original balance, preserving the intended crankshaft dynamics. The balancer includes a single serpentine pulley with six grooves, designed to accommodate the belt system on compatible BMW models. With a crank bore diameter of 1.378 inches and six bolt holes, this balancer ensures a secure and precise fit on the crankshaft. The overall dimensions of 145 mm in diameter and 35.5 mm in width align with OEM specifications for smooth integration.

Compatible BMW Models and Applications

• BMW 228i and 228i xDrive
• BMW 320i and 320i xDrive
• BMW 328i, 328i GT xDrive, and 328i xDrive
• BMW 428i, 428i Gran Coupe, 428i xDrive, and 428i xDrive Gran Coupe
• BMW 528i and 528i xDrive
• BMW X1, X3, X4, and Z4

Common Issues Addressed by This Harmonic Balancer

• Engine vibration and noise due to worn or damaged balancer
• Crankshaft stress and potential damage from imbalance
• Reduced belt life caused by pulley misalignment
• Engine performance issues related to harmonic imbalance
• Failure of integrated pulley affecting accessory drive systems

Installation Notes and Tips

• Ensure crankshaft and mounting surfaces are clean and free of debris before installation
• Use proper torque specifications for the 6 mounting bolts to avoid damage
• Note that hardware and installation instructions are not included with this part
• Verify pulley alignment with belt system during installation
• Professional installation is recommended for accurate fitment and balance

Quality Assurance and Warranty

Dayco’s Premium OEM Replacement Balancer PB1798N is manufactured to meet OEM standards for fit and function. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to ensure durability and performance in demanding engine environments. This part is designed to provide reliable service life when installed correctly on compatible BMW models.