Zimmermann 400.3648.55 Disc Brake Rotor - Front or Front Right

Brake Rotor for Mercedes-Benz Applications

The Zimmermann Black Z brake rotor is built for drivers who want a slotted, coated disc brake rotor with a high-carbon construction. Part number 400.3648.55 is engineered for specific Mercedes-Benz front brake applications and combines a grooved braking surface with corrosion-resistant coating for consistent performance in wet conditions.

Key Features

• Slotted brake disc design helps move brake dust and water away from the friction surface.
• High-carbon machining supports stable braking performance under heat.
• Coated surface adds corrosion resistance and a cleaner appearance.
• 330 mm outer diameter, 32 mm thickness, and 29.4 mm minimum thickness.
• ECE R90 homologated and not subject to registration when homologation applies.

Detailed Description

Zimmermann developed the Black Z rotor using experience from standard brake rotor production and motorsport testing. The grooved surface is intended to improve wet braking behavior by continuously clearing water and brake dust from the disc face. The Coat Z+ anti-corrosion finish adds visual appeal while helping protect the rotor surface. This part number, 400.3648.55, is a direct fit for select Mercedes-Benz R350, ML350, ML450, ML320, ML500, R320, and R500 front brake applications, including 2006-2011 Mercedes-Benz ML350 front with W/O Sport brake system and 2007 Mercedes-Benz ML500 front right for country-spec. models. This part cross-references Brembo 09.R104.11 for the same application.

Common Issues This Rotor Can Address

• Brake fade caused by heat buildup during repeated stops.
• Reduced braking consistency in wet weather.
• Surface corrosion on exposed brake discs.
• Uneven braking feel from worn or damaged rotors.
• Noise or vibration associated with rotor wear.

Installation Notes and Tips

Verify rotor diameter, thickness, hub bore, bolt pattern, and fitment notes before installation. This rotor is listed for front applications only, with some vehicle-specific notes such as W/O Sport brake system or country-spec. model restrictions. Always compare the existing rotor and brake system configuration to part number 400.3648.55 before ordering.

Quality Assurance

Zimmermann states that the Black Z rotor line uses high-quality cast materials and ECE R90 homologation where applicable. The coated finish and high-carbon construction are selected to support consistent braking performance and corrosion resistance.