PowerStop AR82158EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR82158EVC) is engineered specifically for Cadillac ATS models. Designed to provide reliable braking performance, this vented disc brake rotor features a rust-resistant Geomet coating to extend rotor life and maintain consistent stopping power.

• Compatible with Cadillac ATS rear brake systems
• Vented disc brake rotor design for improved heat dissipation
• Rust resistant Geomet coating for corrosion protection
• Nominal thickness of 23.10 mm with a discard thickness of 21.00 mm
• Overall height of 48.30 mm and outside diameter of 315.00 mm
• Mounting bolt hole circle diameter of 115.00 mm with 5 lug holes

Power Stop - Rear Genuine Geomet Coated Rotor Product Line

The Power Stop - Rear Genuine Geomet Coated Rotor line focuses on providing rotors with a durable Geomet coating that resists rust and corrosion. This coating helps maintain rotor integrity over time, especially in environments prone to moisture and road salt exposure. The vented rotor design enhances heat dissipation, reducing the risk of brake fade during extended use. This product line is tailored for rear brake applications, ensuring compatibility and performance for specific vehicle models like the Cadillac ATS.

Detailed Product Description

This disc brake rotor is designed with a vented structure to improve airflow and heat management during braking. The nominal thickness of 23.10 mm and discard thickness of 21.00 mm provide clear service limits for maintenance. The rotor measures 315.00 mm in outside diameter and 48.30 mm in overall height, fitting precisely within the rear brake assembly of the Cadillac ATS. The Geomet coating offers a protective layer against rust, which is critical for maintaining rotor surface quality and braking efficiency over time. The mounting bolt hole circle diameter of 115.00 mm and 5 lug holes ensure secure installation and proper alignment.

Common Applications and Problem Solving

• Replacement for worn or warped rear rotors on Cadillac ATS
• Addresses brake noise caused by rust or uneven rotor surfaces
• Improves braking consistency by reducing heat-related fade
• Prevents premature rotor corrosion in humid or salty conditions
• Restores proper rotor thickness for safe braking performance

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is within the nominal range and above the discard thickness limit. Use the correct torque specifications for the 5 lug bolts to avoid rotor warping. It is recommended to inspect brake pads and replace them if worn to maintain optimal braking performance. Proper alignment of the rotor on the 115.00 mm bolt circle diameter is essential for smooth operation.

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The Geomet coating provides enhanced corrosion resistance to extend rotor life. While specific warranty details are not provided, Power Stop products typically undergo rigorous quality control to ensure durability and performance for Cadillac ATS rear brake applications.