DuraGo BR34178 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Mercedes-Benz ML Series

The DuraGo BR34178 disc brake rotor is engineered for Mercedes-Benz ML55 AMG, ML430, and ML500 models. Crafted from durable cast iron, this vented rotor offers consistent braking performance and heat dissipation for demanding driving conditions.

• Material: Cast iron for strength and durability
• Vented design to improve heat dissipation
• Nominal thickness: 1.26 inches (32 mm) with discard thickness at 1.18 inches (30 mm)
• Outside diameter: 13.58 inches (345 mm) for precise fitment
• Mounting bolt hole quantity: 5 with 4.41 inches (112 mm) bolt circle diameter
• Non-directional brake surface for versatile installation
• Conventional rotor construction, full cast design

Technical Details and Construction

The BR34178 rotor features a full cast construction made from high-quality cast iron, providing a solid and reliable braking surface. Its vented design enhances airflow to reduce heat buildup during braking, which helps maintain consistent stopping power and reduces the risk of rotor warping. The rotor measures 13.58 inches (345 mm) in outside diameter and has an overall height of 2.01 inches (51 mm). The nominal thickness is 1.26 inches (32 mm), with a discard thickness of 1.18 inches (30 mm), ensuring clear guidelines for replacement timing. This rotor includes five mounting bolt holes with a 4.41-inch (112 mm) bolt circle diameter and 0.6-inch (15.3 mm) bolt hole diameter, designed specifically for Mercedes-Benz ML55 AMG, ML430, and ML500 vehicles.

Compatible Vehicles and Applications

This DuraGo disc brake rotor is compatible with the following Mercedes-Benz models:

• ML55 AMG
• ML430
• ML500

It is designed to replace worn or damaged rotors, restoring braking efficiency and safety for these specific models.

Common Issues Addressed by This Rotor

• Brake pulsation caused by warped rotors
• Reduced braking performance due to worn rotor thickness
• Overheating and brake fade from insufficient heat dissipation
• Uneven brake pad wear linked to rotor surface irregularities
• Noise and vibration during braking from damaged rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean mounting surface to prevent rotor runout
• Torque mounting bolts to manufacturer specifications
• Check brake pads for wear and replace if necessary
• Perform a test drive to verify braking performance after installation

Quality Assurance and Warranty

DuraGo brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. While this product does not include a rust-resistant coating, its full cast iron construction ensures durability under normal operating conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.