Zimmermann 400.3671.20 Disc Brake Rotor - Front

Brake Rotor Overview

Zimmermann 400.3671.20 is a coated, internally vented disc brake rotor built to match the dimensions and material quality specified by the vehicle manufacturer. It is a fitment-based replacement for select Mercedes-Benz applications and uses high-carbon machining for consistent braking performance.

Fits 2007-2011 Mercedes-Benz CLS550, front. Fits 2007-2009 Mercedes-Benz E550, front. Fits 2007-2009 Mercedes-Benz E550, front, with B4 reinforcement on special protection version.

• Internally vented design for improved heat management.
• Coated surface for added corrosion resistance and cleaner appearance.
• High-carbon machining for stable rotor behavior under braking load.
• OE-equivalent replacement dimensions and material quality.

Detailed Product Information

Zimmermann 400.3671.20 is a disc brake rotor with a 350 mm outer diameter, 32 mm thickness, 30 mm minimum thickness, 64.5 mm height, 67 mm hub bore, and 112 mm bolt circle. The 6/5 hole arrangement and coated finish support a direct replacement application where the original rotor specification is required. This part cross-references Davico Mfg 18249 for the same application.

Zimmermann’s standard rotor line is positioned as an equivalent-quality replacement range, manufactured to the dimensions and material standards specified by automotive manufacturers. The coated version adds anti-corrosion protection and a more refined surface finish, which is useful for drivers who want a rotor that matches the original fit and appearance expectations on Mercedes-Benz CLS550 and Mercedes-Benz E550 applications.

Common Replacement Issues

• Brake pulsation caused by rotor wear or thickness variation.
• Corrosion on the rotor surface.
• Reduced braking consistency from heat-related rotor fatigue.
• Rotor replacement needs after reaching minimum thickness.

Installation Notes

Verify rotor dimensions, hub bore, bolt pattern, and minimum thickness before installation. Confirm front axle fitment and check the special protection version note for the Mercedes-Benz E550 application. Inspect related brake components for wear and replace any damaged parts as needed during service.

Quality Assurance

Zimmermann manufactures this rotor as an OE-equivalent replacement part under the standards referenced by EU motor vehicle block exemption regulation KFZ-GVO (EU) No. 330/2010. The coated surface and manufacturer-specified dimensions support consistent fit and finish for the listed Mercedes-Benz applications.