DuraGo BR900874 Disc Brake Rotor - Front

Overview of DuraGo BR900874 Disc Brake Rotor

The DuraGo BR900874 is a cast iron disc brake rotor designed for select Mercedes-Benz models. Engineered to meet the demands of vehicles like the GL320, ML350, and R500, this rotor offers reliable braking performance with a vented, full cast construction.

• Material: Durable cast iron for consistent heat dissipation
• Vented rotor design to reduce brake fade
• Nominal thickness of 1.26 inches (32.1 mm) with discard thickness at 1.16 inches (29.4 mm)
• Overall height of 2.15 inches (54.7 mm) and outside diameter of 13.78 inches (350 mm)
• Five mounting bolt holes with a 4.41 inch (112 mm) bolt circle diameter
• Non-directional brake surface for versatile installation
• Conventional rotor type without ABS tone ring

Detailed Product Description

The DuraGo BR900874 disc brake rotor is constructed from full cast iron, providing a solid and durable braking surface. Its vented design enhances airflow to help dissipate heat during braking, which is critical for maintaining consistent stopping power and reducing the risk of rotor warping. With a nominal thickness of 1.26 inches and a discard thickness of 1.16 inches, this rotor ensures a long service life while meeting OEM specifications.

Measuring 13.78 inches in diameter and 2.15 inches in overall height, the rotor fits securely on Mercedes-Benz models including GL320, GL350, GL450, GL550, ML320, ML350, ML550, R320, R350, and R500. The five mounting bolt holes with a 4.41 inch bolt circle diameter provide a precise fit, and the non-directional brake surface allows for flexible installation without concern for rotor orientation.

Compatible Vehicles and Applications

• Mercedes-Benz GL320, GL350, GL450, GL550
• Mercedes-Benz ML320, ML350, ML550
• Mercedes-Benz R320, R350, R500

This rotor is ideal for replacing worn or damaged rotors on these models, restoring braking efficiency and safety.

Common Issues Addressed by This Rotor

• Brake pulsation caused by warped rotors
• Reduced braking performance due to worn rotor thickness
• Excessive brake noise from uneven rotor surfaces
• Overheating and brake fade during heavy use
• Corrosion-related rotor damage (note: this rotor does not have rust-resistant coating)

Installation Notes and Tips

Ensure the rotor surface and hub are clean and free of debris before installation. Use proper torque specifications for the five mounting bolts to avoid rotor distortion. Since this rotor is non-directional, it can be installed on either side without concern for rotation direction. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.

Quality Assurance and Warranty

DuraGo manufactures this rotor to meet or exceed OEM standards for fit and function. The full cast iron construction and vented design contribute to durability and heat management. While this rotor does not include a rust-resistant coating, proper maintenance can help extend its service life. Warranty details should be confirmed with the point of purchase or manufacturer.