PowerStop AR8645EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8645EVC) is engineered for reliable braking performance on select GM trucks and SUVs. Designed specifically for rear disc brake applications, this rotor offers corrosion resistance and precise fitment for vehicles like the Chevrolet Silverado 1500 and Cadillac Escalade.

• Compatible with rear brake systems on Cadillac, Chevrolet, and GMC models
• Vented disc brake rotor design for improved heat dissipation
• Rust-resistant Geomet coating to extend rotor life
• Nominal thickness of 30.10 mm with a discard thickness of 28.50 mm
• Outside diameter of 330 mm (13.00 inches) for exact fitment
• Mounting bolt hole circle diameter of 139.70 mm with 6 lug holes

Detailed Rotor Specifications and Features

This Power Stop rotor features a vented design that helps reduce heat buildup during braking, which is critical for maintaining consistent stopping power and preventing brake fade. The rotor’s Geomet coating provides a protective layer against rust and corrosion, making it suitable for vehicles exposed to harsh weather conditions. With an overall height of 95.60 mm and a nominal thickness of 30.10 mm, this rotor meets OEM specifications for rear brake systems on models such as the GMC Sierra 1500 and Chevrolet Tahoe. The 6-lug hole pattern and 139.70 mm bolt circle diameter ensure proper mounting and alignment.

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 durability. The Geomet coating applied to these rotors enhances corrosion resistance without compromising braking performance. This line is designed to meet or exceed OEM standards, providing a reliable replacement option for rear disc brake rotors on various GM trucks and SUVs.

Common Applications and Problem Solving

• Replacement for worn or warped rear rotors on Chevrolet Silverado 1500 and GMC Sierra 1500
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Prevents rust buildup that can lead to rotor pitting and reduced braking efficiency
• Improves heat dissipation to reduce brake fade during heavy towing or hauling
• Ensures proper fitment and alignment for rear brake systems on Cadillac Escalade and Yukon models

Installation Notes and Tips

• Verify rotor thickness before installation; discard if below 28.50 mm
• Ensure mounting surfaces are clean and free of debris for proper rotor seating
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Follow vehicle-specific service manual instructions for rear brake rotor installation

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The Geomet coating provides long-lasting corrosion resistance, contributing to the rotor’s service 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.