Zimmermann 400.3684.20 Disc Brake Rotor - Front

Overview of Zimmermann Disc Brake Rotor 400.3684.20

The Zimmermann disc brake rotor 400.3684.20 is engineered for reliable braking performance on select Mercedes-Benz models. Designed with precision, this perforated rotor offers enhanced heat dissipation and consistent stopping power for vehicles like the GL350, GLE450 AMG, and GLS550.

• Perforated brake disc type for improved cooling
• Outer diameter of 375 mm for optimal fitment
• Coated surface to resist corrosion and wear
• Thickness of 36 mm with a minimum thickness of 33.4 mm
• Hub bore diameter of 67 mm and bolt hole circle of 112 mm
• Weight of 14.7 kg ensuring durability without excess mass
• Hole arrangement of 8/5 for secure mounting
• Height of 54.5 mm compatible with specified Mercedes-Benz models

Technical Details and Specifications

This Zimmermann disc brake rotor 400.3684.20 features a perforated design that helps reduce brake fade by allowing heat and gases to escape more efficiently during braking. The rotor’s 375 mm outer diameter and 112 mm bolt hole circle ensure precise compatibility with Mercedes-Benz vehicles including the GL350, GLE43 AMG, and ML63 AMG. The coated surface provides additional protection against rust and corrosion, extending the rotor’s service life. With a thickness of 36 mm and a minimum thickness of 33.4 mm, this rotor maintains structural integrity under demanding conditions. The hub bore diameter of 67 mm and an 8/5 hole arrangement support secure installation and alignment.

Compatible Mercedes-Benz Models

• Mercedes-Benz GL350, GL450, GL550
• GLE43 AMG, GLE63 AMG, GLE63 AMG S
• GLE300d, GLE400, GLE450 AMG, GLE500, GLE550, GLE550e
• GLS450, GLS500, GLS550
• ML63 AMG, ML250, ML350, ML400, ML500, ML550

Common Issues Addressed by This Rotor

• Brake fade caused by overheating during heavy use
• Uneven brake pad wear due to rotor surface imperfections
• Corrosion and rust buildup reducing braking efficiency
• Vibration or pulsation during braking from warped rotors
• Noise issues related to rotor surface and design

Installation Notes and Tips

When installing the Zimmermann disc brake rotor 400.3684.20, ensure the rotor surface is clean and free of any contaminants. Verify the bolt hole circle of 112 mm and hub bore diameter of 67 mm match the vehicle specifications. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Proper torque settings should be applied to the mounting bolts following Mercedes-Benz guidelines. After installation, perform a brake bed-in procedure to ensure consistent rotor and pad contact.

Quality Assurance and Warranty

Zimmermann rotors are manufactured to meet strict quality standards, ensuring durability and reliable braking performance. The coated surface enhances corrosion resistance, contributing to longer service life. While specific warranty details for part number 400.3684.20 may vary, Zimmermann products typically come with a limited warranty covering manufacturing defects. Consult the product documentation or authorized sources for exact warranty terms.