ACDelco 18A81999A Non-Coated Rear Disc Brake Rotor

The ACDelco Silver 18A81999A is a non-coated rear disc brake rotor designed to provide reliable vehicle braking power for General Motors vehicles and many other makes and models. This solid rotor is manufactured with cast iron construction and measures 11.34 inches in diameter with a nominal thickness of 0.472 inches.

Key Features:

• Manufactured with multiple alloys for optimum heat dissipation and performance
• Application-specific vane configuration dampens noise and vibration while maximizing airflow to keep rotors running cool
• Non-directional ground finish minimizes thickness variation and helps extend brake pad life
• Mill-balanced for proper rotor function with no extra weights needed
• Quality validated for proper metallurgy and correct brake plate thickness
• 5-lug bolt pattern with 4.528-inch bolt circle diameter

ACDelco Silver brake rotors offer dependable aftermarket quality at an economical price. This rotor features a solid construction design and is ready to install right out of the box with no machining required. The non-coated finish provides a natural cast iron surface. GM OEM part number 19366025.