PowerStop AR8258EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8258EVC) is engineered for reliable braking performance on select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. 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 Alero, Chevrolet Impala, Monte Carlo, Oldsmobile Intrigue, Pontiac Grand Am, and other models
• Solid disc brake rotor with a 10.90 inch (278.00 mm) outside diameter
• Rust resistant Geomet coating for enhanced corrosion protection
• Nominal thickness of 11.40 mm and discard thickness of 9.00 mm
• Mounting bolt hole circle diameter of 117.00 mm with 5 lug holes
• Overall height measures 51.40 mm ensuring proper fitment

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 rear brake applications where exposure to road elements is common. The solid rotor design offers consistent braking performance suitable for the specified Buick, Chevrolet, Oldsmobile, and Pontiac models.

Detailed Product Description

This disc brake rotor is designed specifically for rear brake systems on a range of GM vehicles including the Buick Alero and Regal, Chevrolet Impala and Monte Carlo, Oldsmobile Intrigue, and Pontiac Grand Am and Grand Prix. The rotor’s solid construction and 10.90 inch diameter provide a stable braking surface. Its nominal thickness of 11.40 mm ensures durability, while the discard thickness of 9.00 mm indicates when replacement is necessary to maintain safe braking. The Geomet coating offers a protective layer against rust, which is critical for rear rotors exposed to moisture and road salt. The rotor features a 5-lug hole pattern with a 117.00 mm bolt circle diameter, matching factory specifications for proper installation.

Common Applications and Issues Addressed

• Replacement for worn or warped rear rotors on compatible Buick, Chevrolet, Oldsmobile, and Pontiac models
• Corrosion damage prevention due to rust-resistant coating
• Restores braking performance and reduces brake noise
• Addresses rotor thickness wear to maintain safe stopping distances
• Suitable for vehicles experiencing uneven brake pad wear or pulsation

Installation Notes and Tips

• Verify vehicle compatibility with the part number AR8258EVC before installation
• Inspect calipers and brake pads for wear during rotor replacement
• Ensure mounting surfaces are clean and free of debris for proper rotor seating
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Check rotor thickness with a micrometer to confirm discard thickness limits

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The Geomet coating provides additional protection against corrosion, extending rotor service life. While specific warranty details are not provided here, Power Stop products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.