ACDelco 18A258 Front Disc Brake Rotor

The ACDelco 18A258 is a premium front disc brake rotor designed to deliver reliable braking performance for General Motors vehicles, including Chevrolet, GMC, and Cadillac models. Part of the ACDelco Gold (formerly Professional) line, this rotor provides a high-quality alternative to original equipment parts with precise fit and function.

Key Features:

• Cast iron construction with G3000 qualified material meeting SAE standards for structural integrity
• Vented rotor design for optimal heat dissipation and cooling performance
• Rust-preventative coating provides corrosion protection for superior durability
• Inspected and balanced to minimize pedal pulsation, noise, and vibration
• Thickness variation less than 0.0004 inches to help extend brake pad life
• Ready to install with no machining required
• Independently tested including D3EA and NVH (Noise/Vibration/Harshness) testing

Specifications:

• Position: Front
• Outside Diameter: 11.610 inches (295mm)
• Thickness: 1.285 inches (32.6mm)
• Discard Thickness: 1.215 inches (30.9mm)
• Overall Height: 2.600 inches (66mm)
• Bolt Pattern: 6 on 5.5 inches
• Number of Bolt Holes: 6
• Material: Cast Iron
• Surface: Non-slotted, vented

This rotor follows original manufacturer designs for proper heat dispersion, helping to prolong both pad and rotor life while reducing noise and vibration. Backed by General Motors and covered by ACDelco's warranty, the 18A258 provides dependable stopping power for demanding driving conditions.