PowerStop AR8647SCR Disc Brake Rotor - Rear

Overview

PowerStop AR8647SCR is a rear disc brake rotor built as a direct bolt-on replacement for original equipment. It is designed for drivers who want OE-style fitment with corrosion protection on exposed areas that are prone to rust.

Compatible with Chevrolet Trailblazer, GMC Envoy, and related applications, this rotor matches original equipment performance and specifications, including weight and vane count. The coated hat and edge help preserve appearance behind alloy wheels while supporting consistent braking performance.

Key Features

• Part number AR8647SCR rear brake rotor for OE-style replacement
• Partially coated design with silver epoxy on the hat, outer edge, and vanes
• Rust-resistant coating helps protect exposed surfaces from corrosion
• Vented, full cast construction with smooth surface finish
• Mill balanced for consistent rotational quality
• Built to match original equipment weight and vane count

Detailed Description

PowerStop AR8647SCR is a vented rear disc brake rotor engineered for direct replacement use on select Chevrolet Trailblazer, GMC Envoy, Saab 9-7x, Isuzu Ascender, Buick Rainier, Chevrolet SSR, Trailblazer EXT, Envoy XL, Envoy XUV, and Oldsmobile Bravada applications. The rotor uses full cast construction and a smooth friction surface, with a rust-resistant coating applied to the hat, outer edge, and vanes to reduce corrosion on exposed metal surfaces.

This rotor is designed to follow original equipment specifications for fitment and performance, including weight and vane count. If you are replacing a worn rear rotor on a Chevrolet Trailblazer or GMC Envoy, AR8647SCR provides a direct-fit solution that supports factory-style braking behavior and a cleaner appearance behind modern alloy wheels. This part cross-references Monroe Shocks & Struts (e.g., 19175173, 8151346710) for the same application.

What It Is Used For

• Replacing a worn or warped rear brake rotor
• Addressing brake pulsation caused by uneven rotor wear
• Restoring braking surface thickness on the rear axle
• Reducing visible rust on exposed rotor areas
• Maintaining OE-style braking feel on compatible vehicles

Installation Notes and Tips

Verify rotor diameter, bolt circle, and rear application before installation. This rotor uses a 5-lug, 127 mm bolt circle and a 324 mm outside diameter. Confirm the vehicle’s rear brake configuration and compare the removed rotor to the replacement part number AR8647SCR before assembly.

Quality Assurance

PowerStop designs this rotor to match original equipment specifications, including weight and vane count, for guaranteed fitment on listed applications.