ACDelco 18A81032 Gold Fully Coated Rear Disc Brake Rotor

The ACDelco 18A81032 Gold Fully Coated Rear Disc Brake Rotor is a premium replacement rotor designed to deliver reliable braking performance and long-lasting durability. This vented rotor is engineered to GM OE specifications, making it an ideal replacement for General Motors vehicles and other applications requiring a high-quality brake rotor.

Advanced Coating Technology: Features a zinc-based coating that covers the entire rotor surface, including edges and vanes, providing superior corrosion resistance compared to non-coated rotors. This protective coating has been proven effective through up to 200 hours of industry-standard salt-spray testing, helping the rotor maintain a cleaner appearance and resist environmental damage.

Key Features:

• Vented drum-in-hat design for enhanced heat dissipation and consistent braking performance
• Precision thickness variation of less than 0.0004 inches to minimize brake pedal pulsation and noise
• Manufactured from G3000 qualified cast iron material meeting SAE standards for structural integrity
• Factory balanced to ensure smooth operation and reduce vibration
• 13.58-inch outside diameter with 0.787-inch nominal thickness
• 6-bolt mounting configuration with 5.5-inch bolt circle diameter
• Ready to install—no machining required
• Independently tested for noise, vibration, and harshness (NVH) performance

OEM Cross-Reference: GM part number 19340369

Warranty: Backed by a 12-month/12,000-mile limited warranty against defects in material and workmanship.

ACDelco Gold (formerly ACDelco Professional) brake rotors represent a smart choice for quality-conscious technicians and vehicle owners seeking OE-level performance at a competitive price point.