PowerStop AR82139EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR82139EVC) is engineered for reliable braking performance on select Buick, Chevrolet, and Saab models. Designed as a solid disc brake rotor, it features a rust-resistant Geomet coating to extend rotor life and maintain consistent stopping power.

• Compatible with Buick LaCrosse and Regal, Chevrolet Malibu and Malibu Limited, and Saab 9-5 models
• Solid disc brake rotor with a 292 mm (11.50 inch) outside diameter
• Nominal thickness of 12.00 mm and discard thickness of 10.50 mm
• Rust resistant Geomet coating for enhanced durability
• Overall height of 48.00 mm and mounting bolt hole circle diameter of 120.00 mm
• Five stud/lug hole quantity with 4.70 mm bolt hole diameter

Product Line Details: Power Stop - Rear Genuine Geomet Coated Rotor

This rotor is part of the Power Stop - Rear Genuine Geomet Coated Rotor line, which focuses on providing rotors with a factory-style Geomet coating. This coating offers superior corrosion resistance compared to standard finishes, helping to prevent rust and extend the rotor's service life. The line is designed to meet or exceed OEM specifications, ensuring proper fit and function for rear brake applications on compatible vehicles.

Technical Specifications and Features

The AR82139EVC rotor is a solid type rotor, measuring 292 mm in outside diameter and 48 mm in overall height. It maintains a nominal thickness of 12.00 mm, with a discard thickness of 10.50 mm, indicating when replacement is necessary. The rotor includes a mounting bolt hole circle diameter of 120.00 mm and five lug holes sized at 4.70 mm, matching the bolt pattern of the specified Buick, Chevrolet, and Saab models. The Geomet coating provides a rust-resistant surface, reducing corrosion and maintaining rotor integrity over time.

Applications and Problem Solving

• Replacement for worn or warped rear rotors on Buick LaCrosse and Regal
• Restores braking performance on Chevrolet Malibu and Malibu Limited rear brakes
• Prevents rust and corrosion issues common in Saab 9-5 rear rotors
• Addresses rotor thickness below discard limits to maintain safe braking
• Improves rotor durability in environments prone to moisture and road salt

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before removing the rear wheels. Inspect the brake caliper and pads for wear and replace if necessary. Clean the hub surface to ensure proper rotor seating. Verify the rotor thickness before installation to confirm it meets or exceeds the nominal thickness of 12.00 mm. Torque lug nuts to manufacturer specifications after installation. The Geomet coating does not require additional treatment but avoid contaminating the braking surface during installation.

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet OEM standards for fit, form, and function. The Geomet coating enhances corrosion resistance, contributing to longer rotor life. While specific warranty details are not provided here, Power Stop products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.