PowerStop AR8270EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor AR8270EVC is engineered for reliable braking performance on select Buick, Oldsmobile, and Pontiac vehicles. Designed specifically for rear disc brake applications, this rotor features a rust-resistant Geomet coating and vented construction to enhance durability and heat dissipation.

• Compatible with Buick Aztek, Oldsmobile Silhouette, Pontiac Montana, and Rendezvous rear brakes
• Part number AR8270EVC for precise identification and fitment
• Vented disc brake rotor design for improved cooling
• Rust resistant Geomet coating to reduce corrosion
• Nominal thickness of 11.00 mm and discard thickness of 9.00 mm
• Overall height options of 1.80 inches and 46.20 mm
• Outside diameter of 11.40 inches (290.30 mm)
• Mounting bolt hole circle diameter of 115.00 mm with 5 lug holes

Detailed Product Description

This Power Stop rotor is part of the Power Stop - Rear Genuine Geomet Coated Rotor line, which focuses on providing rotors with a factory-style Geomet coating for enhanced rust resistance. The vented rotor design improves heat dissipation during braking, helping to maintain consistent performance and reduce brake fade. With a nominal thickness of 11.00 mm and a discard thickness of 9.00 mm, this rotor meets OEM specifications for thickness and durability. The rotor’s outside diameter of 11.40 inches (290.30 mm) and mounting bolt hole circle diameter of 115.00 mm with 5 lug holes ensure proper fitment on compatible rear brake assemblies.

Compatible Vehicles and Applications

• Buick Aztek rear disc brake replacement
• Oldsmobile Silhouette rear rotor upgrade
• Pontiac Montana rear brake rotor replacement
• Pontiac Rendezvous rear disc brake maintenance

Installation Notes and Tips

• Verify rotor thickness before installation; discard if below 9.00 mm
• Ensure mounting surfaces are clean and free of debris
• Torque lug nuts to manufacturer specifications for secure fitment
• Inspect brake pads and hardware during rotor replacement
• Follow vehicle-specific service manual for rear brake rotor installation

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The Geomet coating provides corrosion resistance to extend rotor life in various driving conditions. While specific warranty details for part number AR8270EVC should be confirmed with the manufacturer or distributor, Power Stop products typically come with a limited warranty against defects in materials and workmanship.