ACDelco 18A82104B Silver Rear Disc Brake Rotor

The ACDelco 18A82104B is an ACDelco Silver rear disc brake rotor designed as a high-quality, high-value replacement option for GM vehicles as well as most other makes and models. Backed by General Motors, this rotor is engineered to deliver reliable stopping performance and long service life.

Key Features:

• Mill-balanced construction for smooth, vibration-free operation and noise reduction — no additional balancing weights required
• Multi-alloy metallurgy for improved heat dissipation and braking performance under real-world thermal stress
• Application-specific vane configuration maximizes airflow to keep the rotor running cool and helps dampen noise and vibration
• Non-directional ground finish minimizes thickness variation and helps extend brake pad life
• Validated for proper metallurgy and brake plate thickness to support consistent, dependable braking performance
• ACDelco Silver (Advantage) line — independently tested for Noise/Vibration/Harshness (NVH), durability, and wear performance
• Backed by GM with a 12-Month/Unlimited Miles Limited Warranty (parts, plus labor if installed by a GM dealer)

ACDelco Silver brake rotors are sold individually (1 per pack) and are a smart choice when replacing worn, warped, or deeply scored rear rotors. This rotor restores smooth, predictable stopping power by providing a clean, flat surface for the brake calipers and pads to firmly grip.