PowerStop AR8591EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8591EVC) is engineered for reliable braking performance on Ford Expedition and Lincoln Navigator models. Designed as a vented disc brake rotor, it offers enhanced heat dissipation and corrosion resistance for rear brake applications.

• Compatible with Ford Expedition and Lincoln Navigator rear brakes
• Vented disc brake rotor design for improved cooling
• Geomet rust-resistant coating to prevent corrosion
• Nominal thickness of 0.87 inches and discard thickness of 0.75 inches (19.00 mm)
• Outside diameter of 13.50 inches (342.00 mm) for precise fitment
• Mounting bolt hole circle diameter of 5.30 inches (135.00 mm) with 6 lug holes
• Overall height options of 2.00 inches and 2.03 inches (51.50 mm)

Product Line Details: Power Stop - Rear Genuine Geomet Coated Rotor

This rotor is part of the Power Stop - Rear Genuine Geomet Coated Rotor line, which focuses on providing rotors with a durable Geomet coating. This coating offers superior rust resistance compared to standard finishes, extending rotor life and maintaining braking efficiency. The vented design supports heat dissipation, reducing the risk of brake fade during extended use, making it suitable for rear brake systems on larger vehicles like the Ford Expedition and Lincoln Navigator.

Technical Specifications and Features

The AR8591EVC rotor features a vented design that enhances airflow to dissipate heat generated during braking. Its nominal thickness is 0.87 inches, with a discard thickness of 0.75 inches (19.00 mm), ensuring safe replacement intervals. The rotor measures 13.50 inches in outside diameter, matching the original equipment specifications for the rear brakes of compatible vehicles. The mounting bolt hole circle diameter is 5.30 inches with six lug holes, providing secure installation. The Geomet coating offers a rust-resistant surface that helps prevent corrosion and extends rotor service life.

Applications and Problem Solving

• Replacement for worn or warped rear rotors on Ford Expedition and Lincoln Navigator
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Helps reduce rust buildup that can impair braking performance
• Improves heat management to prevent brake fade during towing or heavy loads
• Restores proper rotor thickness for consistent braking response

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before removing the rear wheels. Inspect the brake caliper and pads for wear and replace if necessary. Clean the hub surface to ensure proper rotor seating. When installing the AR8591EVC rotor, verify the mounting bolt hole circle diameter and lug hole count match the vehicle specifications. Torque all fasteners to manufacturer-recommended values. It is advisable to bed in the new rotors and pads following the vehicle manufacturer’s procedures to optimize braking performance.

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The Geomet coating provides enhanced corrosion resistance to extend rotor life. While specific warranty details for the AR8591EVC rotor should be confirmed with the supplier, Power Stop typically offers limited warranties covering defects in materials and workmanship.