Dayco PB1143N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1143N

The Dayco Premium OEM Replacement Balancer PB1143N is engineered for reliable engine performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed as an engine harmonic balancer, it helps maintain smooth engine operation by reducing crankshaft vibrations.

• Compatible with Buick Achieva, Chevrolet Cavalier, Malibu, Pontiac Grand Am, and other models
• Part number PB1143N for precise identification
• Constructed with a cast iron outer ring for durability
• Includes one integrated serpentine pulley with 5 grooves
• Neutral counterweight balance with no additional counterweights
• Overall outside diameter of 170.80 mm (6.725 inches)
• Crank bore diameter of 33.01 mm (1.300 inches)
• Timing marks included for accurate installation

Detailed Product Description and Specifications

This engine harmonic balancer from Dayco’s Premium OEM Replacement Balancer line is designed to meet original equipment specifications for a range of GM vehicles including Buick Achieva, Chevrolet Alero, Malibu, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix. The balancer features a cast iron outer ring that provides strength and resistance to wear. It has a neutral counterweight balance, meaning it does not include additional counterweights, which suits engines designed for this configuration.

The balancer includes one integrated serpentine pulley with five grooves, measuring 163 mm (6.418 inches) in diameter, allowing it to drive multiple engine accessories efficiently. The crank bore diameter is precisely 33.01 mm (1.300 inches), ensuring a proper fit on the crankshaft. The overall width is 41.00 mm (1.615 inches), and the nose outside diameter is 50.70 mm (1.997 inches). Timing marks are present to assist with correct engine timing during installation.

Applications and Common Issues Addressed

• Reduces crankshaft vibration to prevent engine damage
• Replaces worn or damaged harmonic balancers in Buick Achieva and Chevrolet Cavalier engines
• Restores proper serpentine belt alignment and tension
• Eliminates engine noise caused by balancer failure
• Maintains engine timing accuracy with integrated timing marks

Installation Notes and Tips

• Ensure crank bore diameter matches 33.01 mm for proper fit
• Use appropriate tools to avoid damaging the cast iron outer ring during installation
• Verify timing marks alignment for accurate engine timing
• Note that hardware and installation instructions are not included with this part
• Check pulley grooves for compatibility with existing serpentine belts

Quality Assurance and Warranty Information

Dayco’s Premium OEM Replacement Balancer line is designed to meet or exceed OEM standards for fit, form, 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.