Dayco PB1207N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1207N

The Dayco Premium OEM Replacement Balancer PB1207N is engineered for reliable performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed to meet OEM specifications, this engine harmonic balancer supports smooth engine operation and reduces vibration in compatible models such as the Buick LeSabre and Chevrolet Lumina APV.

• 3 bolt hole quantity for secure mounting
• Hub weighted counterweight balance for precise engine harmonics
• Crank bore diameter of 1.373 inches (34.86 mm)
• Includes crank trigger/exciter plate for ignition timing
• Cast iron outer ring for durability
• One integrated serpentine pulley with 6 grooves
• Overall outside diameter of 7.067 inches (179.50 mm)
• Overall width of 3.365 inches (85.45 mm)
• Installation instructions included

About the Premium OEM Replacement Balancer Product Line

The Dayco Premium OEM Replacement Balancer line is designed to provide direct-fit replacements that meet original equipment manufacturer standards. This product line focuses on delivering components with precise dimensions and materials, such as cast iron outer rings and hub weighted counterweights, to ensure proper engine balance and longevity. The PB1207N model exemplifies this approach by incorporating features like a crank trigger plate and integrated serpentine pulley to maintain engine timing and accessory drive functionality.

Detailed Product Description

The PB1207N engine harmonic balancer is crafted with a cast iron outer ring and a hub weighted counterweight balance to reduce crankshaft vibration effectively. It features a crank bore diameter of 1.373 inches (34.86 mm) and a nose outside diameter of 1.934 inches (49.12 mm), ensuring compatibility with specific engine configurations. The balancer includes one integrated serpentine pulley with six grooves, measuring 6.930 inches (176.00 mm) in diameter, designed to drive engine accessories efficiently. Additionally, the crank trigger/exciter plate supports ignition timing systems in compatible Buick, Chevrolet, Oldsmobile, and Pontiac models.

Compatible Vehicles and Applications

• Buick LeSabre, Park Avenue, Riviera
• Chevrolet Lumina APV, Silhouette, Trans Sport
• Oldsmobile 88, 98
• Pontiac Bonneville, Grand Prix, Regal

This balancer is suitable for engines requiring a 3-bolt mounting pattern and the specified bore and pulley dimensions.

Common Issues Addressed by the PB1207N Balancer

• Excessive crankshaft vibration causing engine wear
• Damaged or worn harmonic balancer leading to accessory belt misalignment
• Failure of crank trigger plate affecting ignition timing
• Noise or wobble from deteriorated balancer components
• Loss of proper serpentine belt tension due to pulley wear

Installation Notes and Tips

Installation instructions are included with the PB1207N balancer to assist with proper mounting. Ensure the crank bore and bolt hole pattern match the engine specifications before installation. Use appropriate torque settings for the 3 bolt holes to secure the balancer firmly. Note that hardware is not included, so original or OEM-grade bolts should be used. Verify alignment of the serpentine pulley grooves with accessory belts during installation.

Quality Assurance and Warranty

Dayco's Premium OEM Replacement Balancer line is manufactured to meet strict quality standards, using durable materials such as cast iron for the outer ring. The PB1207N is designed to provide consistent performance and longevity in compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Installation instructions are provided to ensure proper fitment and function. Warranty details should be confirmed with the original equipment provider or distributor.