PowerStop AR8587 Disc Brake Rotor - Rear

Overview of Power Stop Rear OE Stock Replacement Brake Rotor

The Power Stop - Rear OE Stock Replacement Brake Rotor AR8587 is engineered for reliable braking performance on Ford Explorer, Explorer Sport Trac, and Mercury Mountaineer models. Designed as a direct OE replacement, this solid disc brake rotor meets factory specifications to maintain consistent stopping power and vehicle safety.

• Part Number: AR8587
• Compatible with Ford Explorer, Explorer Sport Trac, and Mercury Mountaineer rear brakes
• Solid disc rotor design for dependable braking
• Outside diameter: 11.90 inches (301.00 mm)
• Nominal thickness: 0.47 inches (12.00 mm)
• Discard thickness: 0.43 inches (11.00 mm)
• Overall height: 2.30 inches (58.60 mm)
• Mounting bolt hole circle diameter: 4.50 inches (114.30 mm)
• 5 stud/lug hole quantity
• No rust resistant coating

Product Line Details

The Power Stop - Rear OE Stock Replacement Brake Rotor line is designed to provide a direct fit replacement for rear brake rotors on select vehicles. This product line focuses on matching original equipment specifications to ensure proper fitment and performance without modification. The AR8587 rotor maintains the solid rotor design typical of OE parts, supporting consistent braking feel and durability for Ford and Mercury SUVs.

Technical Description and Specifications

This disc brake rotor features a solid construction with an outside diameter of 11.90 inches (301.00 mm) and a nominal thickness of 0.47 inches (12.00 mm). The discard thickness is set at 0.43 inches (11.00 mm), indicating the minimum safe thickness before replacement is necessary. The overall height measures 2.30 inches (58.60 mm), and the rotor includes a 5-lug hole pattern with a mounting bolt hole circle diameter of 4.50 inches (114.30 mm). Note that this rotor does not include a rust resistant coating, so proper maintenance is recommended to prevent corrosion over time.

Applications and Problem Solving

• Replacement for worn or warped rear brake rotors on Ford Explorer, Explorer Sport Trac, and Mercury Mountaineer
• Addresses brake pulsation or vibration caused by uneven rotor surfaces
• Restores proper rotor thickness to maintain braking efficiency and safety
• Solves noise issues related to rotor wear or damage
• Ensures compatibility with OE brake pads and calipers for consistent braking performance

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean mounting surface and hub to prevent rotor runout
• Use proper torque specifications on lug nuts to avoid rotor warping
• Inspect brake pads and calipers during installation for wear or damage
• Perform a bed-in procedure after installation to optimize rotor and pad contact

Quality Assurance and Warranty

The Power Stop - Rear OE Stock Replacement Brake Rotor AR8587 is manufactured to meet or exceed OEM standards for fit and function. While this product does not include a rust resistant coating, it is built with quality materials to provide consistent braking performance. Warranty information should be confirmed with the original manufacturer or authorized distributor.