Dayco PB1578N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1578N

The Dayco Premium OEM Replacement Balancer PB1578N is engineered for reliable performance in select Nissan and INFINITI vehicles. Designed as an engine harmonic balancer, this component helps maintain engine stability and reduce vibrations for smoother operation.

• Compatible with Nissan 350Z, FX35, G25, G35, M35, and Pathfinder models
• Overall outside diameter of 165.00 mm (6.497 inches)
• Includes two integrated serpentine pulleys with 4 and 6 grooves respectively
• Constructed with a cast iron outer ring for durability
• Neutral counterweight balance with no counterweight included
• Features timing marks for precise engine timing
• Crank bore diameter of 31.99 mm (1.260 inches)
• Does not include hardware or installation instructions

Detailed Product Features and Specifications

The Dayco PB1578N harmonic balancer is designed with a cast iron outer ring, providing strength and resistance to wear. It features two integrated serpentine pulleys: the first pulley has 4 grooves with an outside diameter of 158 mm (6.221 inches), and the second pulley has 6 grooves with an outside diameter of 146 mm (5.749 inches). The balancer has a neutral counterweight balance, meaning it does not include additional counterweights, which is suitable for the specified engine configurations. The overall width measures 70.70 mm (2.784 inches), and the ring width is 34.59 mm (1.362 inches). This part includes timing marks to assist with accurate engine timing during installation. The crank bore diameter is precisely 31.99 mm (1.260 inches), ensuring a proper fit on the crankshaft.

About the Premium OEM Replacement Balancer Product Line

Dayco's Premium OEM Replacement Balancer line is designed to meet original equipment manufacturer specifications, providing a direct replacement for worn or damaged harmonic balancers. This product line focuses on durability and precise fitment, ensuring compatibility with specific vehicle models such as the Nissan 350Z and INFINITI FX35. The PB1578N model exemplifies this approach by matching OEM dimensions and material standards.

Common Applications and Issues Addressed

• Reduces engine vibrations caused by harmonic imbalances
• Prevents premature wear on crankshaft and accessory belts
• Maintains proper timing alignment with integrated timing marks
• Supports accessory drive system with dual serpentine pulleys
• Replaces damaged or worn harmonic balancers in compatible Nissan and INFINITI engines

Installation Notes and Tips

• Ensure crank bore diameter matches engine specifications (31.99 mm)
• Verify pulley groove counts and sizes for accessory belt compatibility
• Use proper tools to avoid damage to the cast iron outer ring during installation
• Timing marks should be aligned carefully to maintain engine timing accuracy
• Hardware and installation instructions are not included; refer to vehicle service manual

Quality Assurance and Warranty

Dayco's Premium OEM Replacement Balancer PB1578N 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 reliability and durability in engine applications. For warranty information, consult Dayco or the vehicle manufacturer guidelines.