PowerStop AR84106 Disc Brake Rotor - Rear

Rear OE stock replacement rotor

Power Stop Autospecialty disc brake rotor AR84106 is a direct fit replacement for rear brake service on select Workhorse chassis applications. It is built to match original equipment fit and performance requirements while keeping the installation straightforward.

• Direct fit replacement for OE-style brake service.
• Vented rotor design for consistent heat management.
• 5-lug bolt pattern with a 322 mm outside diameter.
• Part number AR84106 for easy identification.

Product details

This Power Stop rear brake rotor is part of the Autospecialty line, which focuses on stock replacement components for drivers and technicians who want an OE-style solution. The vented construction, 30 mm nominal thickness, and 27 mm discard thickness support proper brake system service when replacing worn rear rotors on compatible Workhorse W42, W16, and W18 applications. Use AR84106 when you need a rear disc brake rotor that follows the original fitment profile for these chassis platforms.

Common replacement issues

• Brake pulsation from rotor wear or thickness variation.
• Reduced braking consistency from heat buildup in the rotor.
• Corrosion-related service issues on a worn brake rotor.
• Noise or vibration during rear brake operation.

Installation notes and quality

Fits 2006-2011 Workhorse W42, rear. Fits 2006-2009 Workhorse W16, rear. Fits 2006-2009 Workhorse W18, rear. Verify rotor dimensions, bolt circle, and hub fitment before installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. Power Stop positions the Autospecialty line as a direct fit, OE-style replacement range for stock brake service. Part number AR84106 may be useful when matching the correct rear rotor for Workhorse brake maintenance.