PowerStop AR8643EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8643EVC) is engineered for reliable braking performance on select Chevrolet, GMC, and Hummer vehicles. Designed with a rust-resistant Geomet coating and vented rotor construction, this disc brake rotor supports consistent heat dissipation and durability.

• Compatible with Chevrolet Express 2500, Express 3500, Silverado 1500, Silverado 2500, Suburban 2500, Yukon XL 2500
• Fits GMC Sierra 1500, Sierra 1500 HD, Sierra 2500, Savana 2500, Savana 3500
• Also fits Hummer H2 models
• Vented disc brake rotor for improved cooling
• Rust resistant Geomet coating for extended rotor life
• Outside diameter: 330.00 mm (13.00 inches)
• Nominal thickness: 29.20 mm with discard thickness at 26.50 mm
• Mounting bolt hole circle diameter: 165.10 mm with 8 lug holes

Detailed Product Description

This Power Stop rear rotor features a vented design that enhances heat dissipation during braking, reducing the risk of brake fade under heavy use. The Geomet coating provides a protective layer against rust and corrosion, which is especially beneficial for vehicles like the Chevrolet Silverado 1500 HD and GMC Sierra 2500 that may be exposed to harsh weather conditions. With an outside diameter of 330 mm and a nominal thickness of 29.20 mm, this rotor meets OEM specifications for a precise fit and reliable braking performance. The mounting bolt hole circle diameter of 165.10 mm and 8 lug holes ensure compatibility with the specified vehicle models.

About the Power Stop - Rear Genuine Geomet Coated Rotor Line

The Power Stop - Rear Genuine Geomet Coated Rotor product line focuses on delivering rotors with factory-level quality and corrosion resistance. The Geomet coating applied to these rotors helps prevent rust buildup, extending the rotor’s service life and maintaining braking efficiency. This line is designed to meet or exceed OEM standards, making it suitable for rear brake applications on trucks and SUVs such as the Chevrolet Express and GMC Savana series.

Common Applications and Problem Solving

• Replacement for worn or warped rear rotors on Chevrolet Express 2500 and 3500
• Addressing brake noise and vibration issues on GMC Sierra 1500 HD and Silverado 2500
• Improving rotor durability against rust on Hummer H2 rear brakes
• Restoring braking performance on Suburban 2500 and Yukon XL 2500 rear wheels
• Ensuring proper fit and function for Savana 2500 and 3500 rear brake systems

Installation Notes and Tips

• Verify vehicle compatibility with Chevrolet, GMC, or Hummer models listed before installation
• Inspect brake pads and hardware for wear and replace as necessary during rotor installation
• Ensure mounting surfaces are clean and free of debris to prevent rotor misalignment
• Torque lug nuts to manufacturer specifications to avoid rotor damage
• Perform a brake system test after installation to confirm proper operation

Quality Assurance and Warranty

Power Stop rotors, including the AR8643EVC, are manufactured to meet OEM standards for fit, form, and function. The Geomet coating provides additional protection against corrosion, 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.