PowerStop AR8641EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8641EVC) is engineered for reliable braking performance on select Chevrolet and GMC trucks and SUVs. Designed with a rust-resistant Geomet coating and vented rotor construction, this disc brake rotor supports consistent stopping power and durability.

• Compatible with Chevrolet Astro, Avalanche 1500, Safari, Sierra 1500, Sierra 1500 Classic, Silverado 1500, Silverado 1500 Classic, Suburban 1500, Tahoe, Yukon, and Yukon XL 1500
• Part Number: AR8641EVC
• Vented disc brake rotor design for improved heat dissipation
• Rust-resistant Geomet coating to reduce corrosion
• Nominal thickness of 20.00 mm and discard thickness of 18.50 mm
• Overall height of 85.50 mm and outside diameter of 324.00 mm
• Mounting bolt hole circle diameter of 139.70 mm with 6 lug holes

Detailed Rotor Specifications and Features

This Power Stop rear rotor features a vented design that enhances heat dissipation during braking, helping to maintain consistent performance under demanding conditions. The Geomet coating provides a protective layer against rust and corrosion, extending the rotor's service life. With a nominal thickness of 20.00 mm and a discard thickness of 18.50 mm, this rotor meets OEM specifications for thickness and durability. The rotor's overall height measures 85.50 mm, and it has an outside diameter of 324.00 mm, ensuring proper fitment and compatibility with the specified Chevrolet and GMC models. The mounting bolt hole circle diameter is 139.70 mm, accommodating 6 lug holes with a diameter of 5.50 mm each.

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 provides enhanced protection against rust, which is especially beneficial for vehicles exposed to harsh weather or road conditions. This line is designed to meet or exceed OEM standards, making it a suitable replacement for rear disc brake rotors on compatible Chevrolet and GMC trucks and SUVs.

Common Applications and Problem Solving

• Replacement for worn or warped rear disc brake rotors on Chevrolet and GMC trucks and SUVs
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Helps restore proper braking performance and pedal feel
• Prevents premature rotor corrosion and rust buildup
• Supports safe braking under heavy load or towing conditions

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (18.50 mm) before installation
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque lug nuts to manufacturer specifications for proper fitment
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Follow vehicle-specific service manual instructions for rear rotor replacement

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet OEM standards for fit, form, and function. The Geomet coating enhances corrosion resistance, contributing to longer rotor life. While specific warranty details for part number AR8641EVC are not provided here, Power Stop typically offers limited warranties covering defects in materials and workmanship. Refer to official Power Stop documentation for complete warranty information.