PowerStop AR8258 Disc Brake Rotor - Rear

Power Stop Rear OE Stock Replacement Brake Rotor Overview

The Power Stop - Rear OE Stock Replacement Brake Rotor AR8258 is engineered to meet the exact specifications of your vehicle's original equipment. Designed for rear disc brake systems, this solid rotor provides reliable stopping power for select Buick, Chevrolet, Oldsmobile, and Pontiac models.

• Part Number: AR8258
• Solid disc brake rotor design
• Outside diameter: 278.00 mm (10.90 inches)
• Nominal thickness: 11.40 mm (0.45 inches)
• Discard thickness: 9.00 mm (0.35 inches)
• Overall height: 51.40 mm (2.00 inches)
• Mounting bolt hole circle diameter: 117.00 mm (4.60 inches)
• 5 stud/lug hole quantity
• No rust resistant coating

Detailed Product Description

This Power Stop rear disc brake rotor is a solid type rotor designed to replace the original equipment on compatible vehicles. With an outside diameter of 278 mm and a nominal thickness of 11.40 mm, it ensures proper fit and function for rear brake applications. The discard thickness of 9.00 mm indicates the minimum safe thickness before replacement is necessary, helping maintain braking performance and safety. The rotor features a 5-lug hole pattern with a mounting bolt hole circle diameter of 117 mm, matching the OE specifications for a secure fit. Note that this rotor does not include a rust resistant coating, so proper maintenance is recommended to prevent corrosion over time.

Compatible Vehicles and Applications

This rotor is compatible with a range of Buick, Chevrolet, Oldsmobile, and Pontiac models, including but not limited to:

• Buick Century, Regal, Silhouette
• Chevrolet Impala, Monte Carlo, Montana
• Oldsmobile Alero, Intrigue
• Pontiac Grand Am, Grand Prix

It is designed specifically for rear disc brake systems on these vehicles, ensuring proper fitment and braking performance.

Power Stop - Rear OE Stock Replacement Brake Rotor Product Line

The Power Stop - Rear OE Stock Replacement Brake Rotor line focuses on providing direct replacement rotors that meet original equipment specifications. This product line is intended for customers seeking reliable, OE-quality parts without additional coatings or modifications. The AR8258 rotor maintains the factory dimensions and design, making it suitable for restoring braking performance to factory standards on compatible rear disc brake systems.

Common Issues Addressed by This Rotor

• Worn or warped rear brake rotors causing vibration or noise
• Reduced braking efficiency due to rotor thickness below discard limits
• Uneven brake pad wear linked to rotor surface irregularities
• Brake pulsation during stopping
• Corrosion-related rotor damage (requires maintenance due to lack of rust coating)

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (9.00 mm) before installation
• Clean rotor surface to remove any protective oils or debris prior to mounting
• Check compatibility with vehicle make and model to confirm fitment
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Inspect brake pads and hardware during rotor replacement for optimal performance

Quality Assurance and Warranty

Power Stop manufactures this rotor to meet or exceed original equipment standards for fit and function. While this rotor does not include a rust resistant coating, it is constructed from quality materials designed for durability under normal operating conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.