The ACDelco Silver 18A1680A rear disc brake rotor is a precision-engineered replacement component designed for a wide range of General Motors vehicles, including select models from Chevrolet, GMC, Cadillac, and Buick. This rotor serves as a direct, high-value alternative to original equipment 

Restore reliable vehicle braking power and factory-smooth pedal feel with the dependable ACDelco Silver 18A1680A Rear Disc Brake Rotor. Backed by General Motors, this premium aftermarket component offers an exceptional combination of cost-effective value and structural quality, serving as a trusted alternative replacement for General Motors vehicles as well as most other popular makes and models.

Constructed using high-integrity multiple alloys, this rear brake rotor is meticulously engineered to achieve proper metallurgy and uniform brake plate thickness. Its application-specific vane configuration maximizes internal airflow to keep the assembly running cool under load, which significantly improves overall heat dissipation, enhances driving safety, and actively reduces thermal brake fade.

To guarantee a steady, comfortable ride without harsh pedal feedback, each rotor is factory mill-balanced to operate perfectly without the addition of clumsy weights. The clean, non-directional ground surface finish minimizes microscopic thickness variations, ensuring smooth pad contact that dampens noise, cuts down on vibrations, and extends the service lifespan of your rear brake pads.

Product Application & Line Profile

Vehicle Specific Fitment Array:

• Target Coverage: Engineered specifically for General Motors vehicles along with a wide array of passenger cars, sedans, and SUVs on the road today.
• Placement on Vehicle: Rear Wheel Disc Braking Assembly (Fits Left or Right Side)

Key Product Highlights

• Improved Heat Dissipation: Advanced multiple-alloy metallurgy paired with customized application vanes speeds cooling times to combat heat buildup.
• Factory Mill-Balanced: Precision balanced during machining to guarantee consistent rotational function without needing awkward weight clips.
• Validated Quality Standards: Thoroughly audited to confirm ideal metallurgical density and exact, uniform friction plate thickness margins.
• Rounded Radius Edge: Reinforced outer molding layout provides extra structural strength to resist cracking or warping under heavy stopping loads.
• Quiet, Smooth Stops: Non-directional ground finish eliminates thickness variances to damp down noise, prevent chatter, and promote even pad wear.