ACDelco 12560115 GM Original Equipment Harmonic Balancer Crankshaft Pulley

The ACDelco 12560115 is a GM Original Equipment harmonic balancer designed to reduce torsional vibrations by connecting directly to the crankshaft of your vehicle's engine. This genuine GM part serves dual purposes as both a vibration damper and a pulley for your engine's accessory drive belts, making it a critical component for smooth engine operation and proper accessory function.

Key Features:

• Genuine GM Original Equipment part - the same quality component installed during vehicle production
• Double serpentine belt design for multiple accessory drives
• 7.530-inch outside diameter with internally balanced design
• Manufactured to rigorous GM engineering standards for fit, form, and function
• Direct bolt-on replacement for worn or damaged original balancers
• Designed, engineered, and tested to meet strict General Motors specifications

Harmonic balancers are wear items that degrade over time, with the rubber damper element eventually deteriorating and causing vibration, belt squealing, or wobbling. This ACDelco replacement restores proper engine balance and eliminates these common symptoms. The balancer features a precision-machined hub and pulley assembly with an elastomeric damper ring that absorbs harmful torsional vibrations from the crankshaft, protecting engine components and ensuring smooth operation.

Installation Note: This balancer requires a high-torque installation tool to properly remove the crankshaft center bolt. A new balancer bolt (GM part number 12557840) and front cover seal are recommended when replacing this component.