Dayco PB1691N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1691N

The Dayco Premium OEM Replacement Balancer PB1691N is engineered for reliable performance in select Volvo models. Designed as an engine harmonic balancer, this component helps maintain engine smoothness and reduces vibration for a stable driving experience.

• Compatible with Volvo C30, C70, S40, S60, S60 Cross Country, V50, V60, V60 Cross Country, XC60, and XC70
• Overall outside diameter of 156.45 mm (6.160 inches)
• Steel outer ring for durability
• Includes one integrated serpentine pulley with 5 grooves
• Neutral counterweight balance with no additional counterweights
• Installation instructions included for ease of fitment

Product Features and Specifications

This Dayco engine harmonic balancer features a 4-bolt hole configuration and a single integrated serpentine pulley measuring 149.55 mm (5.888 inches) in outside diameter. The pulley has 5 grooves designed to accommodate serpentine belts commonly used in Volvo engines. The balancer’s outer ring is constructed from steel, providing strength and resistance to wear. With a ring width of 40 mm (1.575 inches), it fits precisely within the engine assembly. Notably, this balancer has a neutral counterweight balance, meaning it does not include any counterweights, which is suitable for the specified Volvo models.

About the Premium OEM Replacement Balancer Line

The Dayco Premium OEM Replacement Balancer line focuses on delivering components that meet original equipment manufacturer specifications. This ensures compatibility and performance consistency with the factory-installed parts in Volvo vehicles. The PB1691N is part of this line, offering a direct replacement solution that maintains engine balance and pulley function without requiring additional hardware, as no hardware is included.

Common Applications and Problem Resolution

• Reduces engine vibration caused by worn or damaged harmonic balancers
• Prevents premature wear on serpentine belts by maintaining proper pulley alignment
• Restores engine smoothness in Volvo C30, S60, XC70, and other compatible models
• Addresses pulley groove wear that can cause belt slippage or noise
• Eliminates issues related to balancer imbalance affecting engine timing and performance

Installation Notes and Tips

The PB1691N includes installation instructions to assist with proper fitment. Note that no hardware or Woodruff key is included, so existing components should be inspected and reused if in good condition. Ensure the 4-bolt hole pattern aligns correctly with the crankshaft flange. Proper torque specifications should be followed to avoid damage. This balancer does not include timing marks or a crank trigger/exciter plate, so verify compatibility with your vehicle’s ignition system.

Quality Assurance and Warranty

Dayco’s Premium OEM Replacement Balancer line is manufactured to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Using the PB1691N helps maintain the integrity of your Volvo engine’s harmonic balancing system.