DuraGo BR900878-01 Disc Brake Rotor - Rear

Overview of DuraGo BR900878-01 Disc Brake Rotor

The DuraGo BR900878-01 is a vented disc brake rotor designed specifically for select Mercedes-Benz models including GL320, GL350, GL450, GL550, ML320, ML350, ML500, ML550, R320, R350, and R500. Engineered with full cast iron construction and a rust-resistant coating, this rotor offers reliable performance and durability for your vehicle's braking system.

• Material: Cast iron for strength and heat dissipation
• Construction: Full cast design with vented rotor type
• Rust-resistant coating to reduce corrosion
• Outside diameter: 12.99 inches (330 mm)
• Nominal thickness: 0.87 inches (22 mm)
• Discard thickness: 0.76 inches (19.4 mm)
• Mounting bolt hole quantity: 5 with 4.41 inch (112 mm) bolt circle diameter
• Center hole diameter: 2.64 inches (67 mm)
• Drum-in-hat type rotor with non-directional brake surface

Detailed Product Description

The DuraGo BR900878-01 disc brake rotor is constructed from durable cast iron, providing excellent thermal conductivity and resistance to warping under high braking loads. Its vented design improves heat dissipation, helping to maintain consistent braking performance during extended use. The rotor features a rust-resistant coating that helps protect against corrosion, extending the service life of the part. This rotor is a drum-in-hat type, integrating a drum brake surface within the rotor hat, suitable for vehicles equipped with rear drum parking brakes. 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, ML500, ML550
• Mercedes-Benz R320, R350, R500

This rotor is designed to replace worn or damaged rotors on these specific Mercedes-Benz models, restoring proper braking function and safety.

Common Issues Addressed by This Rotor

• Brake pulsation or vibration due to warped rotors
• Reduced braking efficiency from worn rotor thickness
• Corrosion and rust buildup affecting rotor surface
• Uneven brake pad wear caused by damaged rotors
• Noisy braking from rotor surface imperfections

Installation Notes and Tips

Ensure the rotor is installed on compatible Mercedes-Benz models as listed. Verify the mounting bolt hole pattern and center hole diameter match your vehicle specifications. Clean the hub surface before installation to prevent runout. Since this rotor is non-directional, it can be installed on either side without concern for rotation direction. Check rotor thickness before installation to confirm it meets minimum discard thickness specifications.

Quality Assurance and Warranty

DuraGo manufactures this rotor to meet or exceed OEM specifications for fit, form, and function. The cast iron construction and rust-resistant coating contribute to long-term durability. While specific warranty details are not provided, DuraGo products typically come with a limited warranty against defects in materials and workmanship.