Dayco PB1074N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1074N

The Dayco Premium OEM Replacement Balancer PB1074N is engineered for reliable performance in select Buick, Oldsmobile, and Pontiac vehicles. Designed to meet OEM specifications, this engine harmonic balancer ensures proper crankshaft vibration dampening and pulley function for smooth engine operation.

• Compatible with Buick, Oldsmobile, and Pontiac models including Bonneville, Delta 88, LeSabre, Reatta, Riviera, and Toronado
• Hub weighted counterbalance for precise vibration control
• Includes crank trigger/exciter plate for ignition timing
• Cast iron outer ring for durability and wear resistance
• Single integrated serpentine pulley with 6 grooves
• Installation instructions included for ease of fitment
• Three bolt holes and a crank bore diameter of 1.375 inches (34.92 mm)

Detailed Product Description

The Dayco PB1074N engine harmonic balancer is a critical component designed to reduce torsional vibration in the crankshaft of compatible Buick, Oldsmobile, and Pontiac engines. Featuring a hub weighted counterbalance, this balancer helps maintain engine smoothness and longevity. The cast iron outer ring provides strength and resistance to wear, while the integrated serpentine pulley with six grooves supports accessory belt routing. The balancer includes a crank trigger/exciter plate, essential for ignition timing systems in these vehicles. With an overall outside diameter of 7.067 inches (179.50 mm) and a nose outside diameter of 1.934 inches (49.12 mm), it fits precisely on the crankshaft with a 1.375 inch (34.92 mm) bore. This part does not include hardware but comes with installation instructions to assist with proper mounting.

About the Premium OEM Replacement Balancer Line

Dayco's 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 that maintain factory specifications for fit, form, and function. The PB1074N is part of this line, ensuring compatibility and performance for specific Buick, Oldsmobile, and Pontiac models requiring precise harmonic balancing and pulley integration.

Common Applications and Issues Addressed

• Reduces crankshaft vibration to prevent premature engine wear
• Restores proper serpentine belt alignment and tension
• Supports ignition timing with integrated crank trigger plate
• Eliminates noise and rough idling caused by worn balancers
• Prevents accessory belt slippage and pulley damage

Installation Notes and Tips

• Ensure crankshaft and bore surfaces are clean before installation
• Use the included installation instructions for proper torque specifications
• Verify the three bolt holes align correctly with the crankshaft flange
• Check serpentine belt condition and alignment after installation
• Hardware is not included; reuse original bolts or source OEM replacements

Quality Assurance and Warranty

Dayco Premium OEM Replacement Balancers are manufactured to meet stringent quality standards, ensuring durability and reliable performance. Installation instructions are provided to support proper fitment. Warranty details should be confirmed with the original equipment manufacturer or supplier, as this product does not include hardware and warranty coverage may vary.