Dayco PB1587N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1587N

The Dayco Premium OEM Replacement Balancer PB1587N is engineered for reliable performance in select Ford, Mazda, and Mercury vehicles. Designed to meet OEM specifications, this engine harmonic balancer supports smooth engine operation and vibration reduction.

• Compatible with Ford Escape, Focus, Ranger, Transit Connect, Mazda B2300, Tribute, and Mercury Mariner models
• Neutral counterweight balance with no additional counterweights
• Crank bore diameter of 1.044 inches (26.51 mm)
• Includes crank trigger/exciter plate for engine timing functions
• Constructed with a cast iron outer ring for durability
• Features one integrated serpentine pulley with 6 grooves
• Overall outside diameter of 5.434 inches (138.00 mm) and width of 1.532 inches (38.90 mm)
• Part number PB1587N for precise identification

Product Line Details: Premium OEM Replacement Balancer

The Premium OEM Replacement Balancer line by Dayco is designed to provide direct-fit replacements that adhere closely to original equipment manufacturer standards. This ensures compatibility and performance consistency for engine harmonic balancers, such as the PB1587N, across various vehicle applications. The focus is on maintaining engine balance and reducing vibration without altering factory specifications.

Technical Description and Features

The PB1587N harmonic balancer features a neutral counterweight balance, meaning it does not include additional counterweights, which is suitable for engines designed to operate without them. The crank bore measures 1.044 inches (26.51 mm), ensuring a precise fit on the crankshaft. The balancer includes a crank trigger/exciter plate, which is essential for engine timing and sensor functions. Its outer ring is made of cast iron, providing strength and resistance to wear. The integrated serpentine pulley has six grooves and an outside diameter of 5.237 inches (133.00 mm), supporting accessory belt routing. Overall dimensions include a 5.434-inch (138.00 mm) outside diameter and a width of 1.532 inches (38.90 mm), matching OEM specifications for proper fitment.

Applications and Common Issues Addressed

• Reduces engine vibration and harmonic imbalance
• Prevents premature wear on crankshaft and accessories
• Supports accurate crankshaft position sensing with integrated exciter plate
• Eliminates noise and potential damage caused by worn or damaged balancers
• Restores proper serpentine belt alignment and tension

Installation Notes and Tips

Installation of the Dayco PB1587N harmonic balancer requires proper alignment on the crankshaft bore of 1.044 inches. Since hardware and installation instructions are not included, it is recommended to use OEM or equivalent fasteners and consult vehicle-specific service manuals for torque specifications and procedures. Care should be taken to avoid damaging the exciter plate during installation. Professional installation is advised to ensure correct fitment and function.

Quality Assurance and Warranty

Dayco's Premium OEM Replacement Balancer line is manufactured to meet stringent quality standards, ensuring durability and performance consistent with original equipment. While specific warranty details for part number PB1587N are not provided here, Dayco typically offers limited warranties covering defects in materials and workmanship. Users should verify warranty terms with the supplier or manufacturer documentation.