ACDelco 18A81032XS Silver Vented Rear Disc Brake Rotor

The ACDelco 18A81032XS is a Silver series vented rear disc brake rotor engineered as a high-quality replacement for GM trucks and SUVs. Part of ACDelco's Silver lineup, this rotor features a full corrosion-protection coating that helps prevent rust, reduces brake pulsation, and prevents the rotor from seizing to the wheel hub — extending service life in all weather conditions.

Key Features:

• Full corrosion-protection coating — robotic-applied, baked-on finish shields exposed surfaces from rust and environmental damage
• Vented design — internal vane configuration maximizes airflow for improved heat dissipation and reduced fade under repeated braking
• Drum-in-hat construction — integrated parking brake compatibility for versatile vehicle fitment
• Tight thickness variation — minimizes brake pedal pulsation, noise, and vibration for smooth, consistent stops
• G3000-grade cast iron — meets SAE structural integrity standards with OE-matched metallurgy for proven performance
• Mill-balanced — no additional counterweights required; delivers smooth, quiet braking operation right out of the box
• NVH tested — independently validated for Noise, Vibration, and Harshness to ensure refinement and long-term durability
• No machining required — ready to install straight from the box
• Sold individually (1 rotor per pack)

ACDelco Silver brake rotors are backed by General Motors engineering standards and go through the same rigorous quality approval process as OE components. Pair with ACDelco Silver or Gold brake pads for a complete, optimized braking system service.