Dayco PB1489N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1489N

The Dayco Premium OEM Replacement Balancer PB1489N is engineered for reliable engine performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed as an engine harmonic balancer, it helps reduce crankshaft vibration and supports accessory drive systems with integrated pulley functionality.

• Compatible with Buick Achieva, Century, Regal, Skylark
• Fits Chevrolet Impala, Lumina, Malibu, Monte Carlo, Corsica
• Suitable for Oldsmobile Cutlass, Cutlass Ciera, Cutlass Supreme, Silhouette
• Works with Pontiac Grand Am, Grand Prix, Aztek, Montana, Trans Sport
• Part Number: PB1489N

Key Features and Specifications

• Bolt Hole Quantity: 3 for secure mounting
• Neutral counterweight balance with no additional counterweight
• Crank bore diameter: 1.245 inches (31.60 mm)
• Includes crank trigger/exciter plate for engine timing functions
• One integrated serpentine pulley with 6 grooves, 5.867 inches (149 mm) diameter
• Outer ring made of durable cast iron with 1 inch (25.40 mm) ring width
• Overall outside diameter: 6.103 inches (155 mm)
• Overall width: 2.028 inches (51.50 mm)
• 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 manufacturer specifications for engine harmonic balancers. This product line focuses on delivering precise fitment and reliable performance for a range of GM vehicles, ensuring compatibility with factory components such as crank trigger plates and serpentine pulleys. The PB1489N model exemplifies this approach by providing a neutral balance design and durable cast iron construction.

Applications and Problem Solving

This engine harmonic balancer is used to reduce crankshaft vibration and maintain engine balance, which helps prevent premature wear and damage. It also supports accessory drive systems through its integrated serpentine pulley.

• Reduces crankshaft vibration to protect engine components
• Prevents accessory belt slippage with a 6-groove serpentine pulley
• Maintains engine timing accuracy with integrated exciter plate
• Replaces worn or damaged harmonic balancers in compatible GM vehicles
• Helps avoid engine noise and rough idling caused by balancer failure

Installation Notes and Tips

• Ensure the crank bore diameter matches 1.245 inches (31.60 mm) for proper fit
• Use appropriate tools to align the 3 bolt holes securely
• Verify compatibility with vehicle make and model before installation
• Note that hardware and installation instructions are not included; refer to vehicle service manual
• Check pulley grooves and belt alignment during installation

Quality Assurance and Warranty

Dayco's Premium OEM Replacement Balancer PB1489N is manufactured to meet OEM standards for durability and performance. While specific warranty details are not provided, Dayco products typically undergo rigorous quality control to ensure reliability in engine harmonic balancing applications.