ACDelco 18A1321B Silver Non-Coated Rear Disc Brake Rotor

The ACDelco 18A1321B is an ACDelco Silver (formerly Advantage) non-coated rear disc brake rotor, engineered as a quality, high-value aftermarket replacement backed by General Motors. Designed to restore reliable braking performance, this rotor is a dependable choice for GM vehicles as well as a wide range of other makes and models.

Key Features:

• Application-specific vane configuration — optimizes airflow for maximum heat dissipation, reducing rotor temperatures and extending component life
• Non-directional ground finish — minimizes rotor thickness variation for consistent brake pad contact and extended pad life
• Multi-alloy construction — manufactured with multiple alloys for improved heat dissipation and braking performance
• Mill-balanced design — ensures proper rotor function without the need for additional balancing weights
• Quality validated — inspected for proper metallurgy and correct brake plate thickness to meet ACDelco standards
• Noise and vibration dampening — vane design helps suppress brake noise and harshness for a quieter, smoother driving experience

ACDelco Silver parts deliver the fit, form, and function of premium aftermarket components at an economical price point. The 18A1321B is covered by ACDelco's 12-Month/Unlimited-Mile Limited Warranty (parts sold on or after 04/01/18, parts only). Note: Some ACDelco Silver parts may have formerly appeared under the ACDelco Advantage name.