Raybestos 780139 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Dodge Ram Trucks

The Raybestos Specialty - Truck Disc Brake Rotor 780139 is engineered to meet the braking demands of Dodge Ram 1500, 2500, and 3500 models. Designed as a solid, drum-in-hat type rotor, it offers consistent performance and durability for heavy-duty truck applications.

• Compatible with Dodge Ram 1500, 2500, and 3500
• Solid disc brake rotor with drum-in-hat design
• Outside diameter: 13.855 inches (351.9 mm)
• Overall height: 5.150 inches (130.8 mm)
• Mounting bolt hole quantity: 8 with 6.5 mm diameter
• Center hole diameter: 4.843 inches (123 mm)
• Nominal thickness: 1.185 inches (30.1 mm)
• Discard thickness: 1.118 inches (28.4 mm)

Detailed Product Specifications and Features

This Raybestos Specialty - Truck rotor (part number 780139) is a solid disc brake rotor featuring a drum-in-hat design, which integrates the parking brake drum into the rotor itself. The rotor measures 13.855 inches in outside diameter and has an overall height of 5.150 inches, ensuring proper fitment and clearance for the specified Dodge Ram models. It includes eight mounting bolt holes with a 6.5 mm diameter arranged on a 165.1 mm bolt circle diameter, providing secure attachment to the wheel hub.

The nominal thickness of the rotor is 1.185 inches, with a discard thickness of 1.118 inches, indicating the minimum thickness before replacement is necessary to maintain safe braking performance. The center hole diameter is 4.843 inches, designed to fit precisely on the hub for optimal alignment and balance.

Specialty - Truck Product Line Overview

The Raybestos Specialty - Truck line focuses on components tailored for truck applications, emphasizing durability and compatibility with heavy-duty vehicles. This product line addresses the unique braking requirements of trucks like the Dodge Ram series, offering parts engineered to withstand higher loads and extended use in demanding conditions.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Dodge Ram 1500, 2500, and 3500
• Restores proper braking performance and pedal feel
• Addresses brake noise and vibration caused by rotor irregularities
• Supports parking brake function with integrated drum-in-hat design
• Prevents brake fade under heavy load or towing conditions

Installation Notes and Tips

Ensure the rotor is installed on compatible Dodge Ram models (1500, 2500, 3500) matching the specified bolt pattern and dimensions. Verify the rotor thickness before installation to confirm it meets or exceeds the discard thickness. Proper cleaning of the rotor surface and hub mounting area is recommended to avoid uneven wear or noise. Use appropriate torque specifications for mounting bolts to secure the rotor safely.

Quality Assurance and Warranty

Raybestos manufactures the Specialty - Truck rotors to meet industry standards for durability and performance. While specific warranty details for part number 780139 are not provided here, Raybestos products typically come with a limited warranty against defects in material and workmanship. Refer to Raybestos documentation or authorized distributors for exact warranty terms.