ACDelco 18A2688B Rear Disc Brake Rotor

The ACDelco 18A2688B is a rear disc brake rotor engineered to deliver reliable, consistent stopping performance. Part of ACDelco's trusted brake rotor lineup, this rotor is manufactured to meet expectations for fit, form, and function across a wide range of vehicles and is backed by General Motors.

Key Features:

• Mill-balanced construction for smooth operation and reduced brake noise and vibration
• Thickness variation under 0.0004" to minimize pedal pulsation and extend brake pad life
• G3000-qualified cast iron material meets SAE standards for structural integrity
• Drum-in-hat design with full cast construction
• 5-bolt, 120mm (4.724") bolt circle with 71.1mm (2.8") center bore diameter
• No machining required — ready to install right out of the box
• Independently tested using Noise/Vibration/Harshness (NVH) and durability/wear testing protocols
• Follows original manufacturers' designs for optimal heat dissipation, helping to prolong pad and rotor life
• Sold individually (1 per pack)

ACDelco brake rotors are designed and validated through an extensive testing regimen, ensuring dependable quality and performance. This rotor is a smart replacement choice for drivers seeking OE-matched braking confidence.