PowerStop AR8646EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8646EVC) is engineered for reliable braking performance on heavy-duty Chevrolet and GMC trucks. Designed specifically for rear disc brake applications, this rotor offers corrosion resistance and durability for vehicles like the Silverado 3500 and Sierra 3500 HD.

• Compatible with Chevrolet Express 3500, GMC Savana 3500, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Silverado 3500, Silverado 3500 Classic, and Silverado 3500 HD
• Part Number: AR8646EVC
• Vented disc brake rotor design for improved heat dissipation
• Geomet rust-resistant coating to prevent corrosion
• Nominal thickness of 30.00 mm with a discard thickness of 28.50 mm
• Overall height of 132.10 mm and outside diameter of 324.00 mm
• Mounting bolt hole circle diameter of 165.10 mm with 8 stud/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 extends the rotor's service life, especially in environments prone to moisture and road salt exposure. The vented rotor design enhances heat dissipation, reducing the risk of brake fade during heavy-duty use. This product line is tailored for rear brake applications on larger trucks and commercial vehicles, ensuring consistent braking performance under demanding conditions.

Technical Specifications and Features

This disc brake rotor features a vented design that improves airflow and cooling, essential for maintaining braking efficiency on heavy-duty trucks. The nominal thickness of 30.00 mm and discard thickness of 28.50 mm provide clear service limits for maintenance. The rotor measures 324.00 mm in outside diameter and 132.10 mm in overall height, fitting precisely on the rear brakes of specified Chevrolet and GMC models. The Geomet coating offers rust resistance, helping to maintain rotor integrity and appearance over time. The rotor mounts with an 8-lug pattern on a 165.10 mm bolt circle diameter, ensuring compatibility with the specified vehicles.

Applications and Problem Solving

• Replacement for worn or warped rear rotors on Chevrolet Silverado 3500 and GMC Sierra 3500 HD
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Prevents rust and corrosion that can lead to rotor pitting and reduced braking efficiency
• Improves heat dissipation to reduce brake fade during heavy towing or hauling
• Restores proper rotor thickness for safe and effective braking performance

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (28.50 mm) before installation
• Clean mounting surface to prevent rotor runout and vibration
• Torque lug nuts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Check for proper alignment and clearance with caliper components

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, 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. Always refer to the manufacturer’s warranty documentation for complete terms.