Raybestos 3931R Disc Brake Rotor and Hub Assembly - Front

Overview of Raybestos R-Line Disc Brake Rotor and Hub Assembly

The Raybestos R-Line 3931R disc brake rotor and hub assembly is engineered for reliable braking performance on Jeep Cherokee, Comanche, and Wagoneer models. Designed to meet precise specifications, this assembly ensures proper fit and function for your vehicle's braking system.

• Compatible with Jeep Cherokee, Comanche, and Wagoneer
• Part number 3931R for accurate identification
• Includes disc brake rotor and hub assembly
• Mounting bolt hole quantity: 5 with 114.3 mm bolt circle diameter
• Nominal rotor thickness: 0.875 inches (22.2 mm)
• Discard thickness: 0.815 inches (20.7 mm)
• Mounting bolt hole diameter: 0.54 inches (13.7 mm)
• Stud/lug hole quantity: 5

Technical Specifications and Features

This disc brake rotor and hub assembly features a nominal thickness of 0.875 inches (22.2 mm), providing a solid braking surface for consistent stopping power. The discard thickness is set at 0.815 inches (20.7 mm), indicating the minimum safe thickness before replacement is necessary. The assembly includes five mounting bolt holes arranged on a 114.3 mm bolt circle diameter, with each hole measuring 0.54 inches (13.7 mm) in diameter. Additionally, it has five stud/lug holes to ensure secure attachment to the vehicle hub.

R-Line Product Line Details

The Raybestos R-Line product line focuses on delivering dependable brake components that meet or exceed OEM standards. The 3931R rotor and hub assembly is part of this line, designed to provide consistent performance and durability for Jeep vehicles. R-Line products are engineered to maintain proper fitment and function, supporting safe and effective braking under various driving conditions.

Applications and Problem Solving

• Replacement for worn or warped rotors on Jeep Cherokee, Comanche, and Wagoneer
• Addresses brake pulsation caused by uneven rotor surfaces
• Resolves noise issues related to damaged or corroded rotors
• Restores proper rotor thickness for safe braking performance
• Ensures secure hub mounting to prevent wheel vibration

Installation Notes and Tips

When installing the Raybestos R-Line 3931R rotor and hub assembly, ensure the mounting surfaces are clean and free of debris. Verify the bolt hole pattern matches the vehicle specifications, specifically the 5-bolt configuration with a 114.3 mm bolt circle diameter. Torque all mounting bolts to the manufacturer’s recommended specifications. It is advisable to inspect related brake components such as pads and calipers during installation for optimal system performance.

Quality Assurance and Warranty

Raybestos R-Line brake components are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 3931R disc brake rotor and hub assembly undergoes rigorous testing to comply with OEM fit and function requirements. Please refer to Raybestos warranty documentation for specific coverage details.