Dayco PB1670N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1670N

The Dayco Premium OEM Replacement Balancer PB1670N is engineered for precise engine harmonic balancing in select Mazda vehicles. Designed to meet OEM specifications, this balancer supports smooth engine operation and durability for Mazda 3, Mazda 6, and Mazda CX-7 models.

• Neutral counterweight balance with no counterweight
• Crank bore diameter of 1.044 inches (26.51 mm)
• Includes crank trigger/exciter plate for engine timing
• Single integrated serpentine pulley with 6 grooves
• Outer ring constructed from cast iron for durability
• Overall outside diameter of 6.103 inches (155 mm)
• Overall width of 1.536 inches (39 mm)
• Ring width measures 1.016 inches (25.8 mm)
• Nose outside diameter of 1.457 inches (37 mm)

About the Premium OEM Replacement Balancer Product Line

The Dayco Premium OEM Replacement Balancer line is designed to provide direct-fit replacements that adhere closely to original equipment manufacturer standards. This ensures compatibility and reliable performance for engine harmonic balancers, such as the PB1670N, which is tailored for specific Mazda applications. The product line focuses on maintaining engine balance and reducing vibration without compromising the integrity of the crankshaft assembly.

Detailed Product Description

The PB1670N engine harmonic balancer from Dayco features a neutral counterweight balance, meaning it does not include additional counterweights, which is critical for maintaining the original engine balance characteristics. The balancer’s crank bore measures 1.044 inches (26.51 mm), ensuring a precise fit on the crankshaft. It incorporates a crank trigger/exciter plate, which is essential for engine timing and sensor operation in compatible Mazda models.

The balancer includes one integrated serpentine pulley with six grooves, designed to drive accessory belts efficiently. The outer ring is made of cast iron, providing strength and resistance to wear. With an overall outside diameter of 6.103 inches (155 mm) and a width of 1.536 inches (39 mm), this balancer matches OEM dimensions for proper installation and function. The nose outside diameter is 1.457 inches (37 mm), and the ring width is 1.016 inches (25.8 mm), all contributing to a precise fit and reliable performance.

Applications and Common Issues Addressed

• Reduces engine vibration caused by harmonic imbalances
• Prevents premature wear on crankshaft and accessory belts
• Supports accurate crankshaft position sensor readings via exciter plate
• Helps maintain engine timing integrity in Mazda 3, 6, and CX-7
• Replaces worn or damaged harmonic balancers to restore engine smoothness

Installation Notes and Tips

Installation of the Dayco PB1670N harmonic balancer requires proper alignment with the crankshaft bore and careful handling of the crank trigger/exciter plate to avoid damage. Note that this part does not include installation hardware or instructions, so refer to the vehicle’s service manual for torque specifications and installation procedures. Using appropriate tools to press the balancer onto the crankshaft will ensure a secure fit and prevent damage to the component.

Quality Assurance and Warranty

Dayco’s Premium OEM Replacement Balancer line is manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. While specific warranty details for part number PB1670N are not provided here, Dayco products typically come with a limited warranty against defects in materials and workmanship. For exact warranty terms, consult Dayco or the product documentation.