ACDelco 18A82151AC Coated Rear Disc Brake Rotor

The ACDelco 18A82151AC is a coated rear disc brake rotor engineered to deliver reliable stopping power as a high-quality replacement for the original equipment component. Designed to meet OE specifications for fit, form, and function, this rotor installs directly onto the wheel hub where the brake caliper presses the pads against the rotor surface to slow and stop the vehicle.

The rotor features a robotic-applied, baked-on coating that helps prevent brake pulsation, resists rotor-to-hub seizing, and provides superior rust protection against rain, snow, and corrosive road sprays. A non-directional ground finish minimizes thickness variation to reduce pedal pulsation and extend brake pad life. The rotor is mill-balanced for smooth, quiet operation with no extra weights required.

Key Features:

• Coated finish provides superior corrosion and rust resistance
• Robotic-applied, baked-on coating helps prevent brake pulsation
• Non-directional ground finish minimizes thickness variation
• Mill-balanced for smooth brake operation and noise reduction
• Manufactured with multiple alloys for improved heat dissipation
• Ready to install right out of the box — no machining required
• Quality validated for proper metallurgy and correct brake plate thickness
• Backed by General Motors

ACDelco brake rotors are independently tested for noise, vibration, and harshness (NVH) as well as durability and wear to ensure long-lasting, dependable performance. This rotor is a smart choice for vehicles requiring a durable, corrosion-resistant rear brake rotor replacement.