ACDelco 18A2922C Coated Rear Disc Brake Rotor

The ACDelco 18A2922C is a coated rear disc brake rotor designed as a high-quality replacement for a wide range of vehicles. Part of the ACDelco Gold (Professional) line, this rotor is manufactured to meet or exceed OE specifications for fit, form, and function, and is backed by General Motors.

The corrosion-resistant coating helps protect the rotor from rust and environmental wear, extending service life and maintaining a clean appearance throughout the life of the part. The rotor arrives ready to install straight out of the box — no machining required.

Key Features:

• Coated finish for enhanced corrosion resistance and long-term durability
• Thickness variation of less than 0.0004 inches to minimize pedal pulsation and noise
• OE-matched G3000 qualified cast iron material meets SAE structural integrity standards
• Mill-balanced for smooth, vibration-free brake operation — no extra weights needed
• Application-specific vane configuration maximizes airflow and heat dissipation to keep rotors running cool
• Non-directional ground finish helps extend brake pad life
• Independently tested with Noise/Vibration/Harshness (NVH) and durability/wear protocols
• No machining required — ready to install out of the box
• Sold individually (1 rotor per pack)

ACDelco brake components go through a rigorous quality validation process covering proper metallurgy, correct brake plate thickness, and balance. The 18A2922C is covered by ACDelco's 24-Month / Unlimited Mile Limited Warranty (parts only), providing confidence and peace of mind with every installation.