Zimmermann 400.3647.20 Disc Brake Rotor - Front

Zimmermann Front Brake Rotor for Mercedes-Benz

The Zimmermann 400.3647.20 is a front disc brake rotor built for select Mercedes-Benz SL and 600SL applications. It features an internally vented design, coated surface, and high-carbon machining for consistent braking performance and corrosion resistance.

Key Features

• Part number 400.3647.20
• Internally vented disc brake rotor
• Coated surface for improved corrosion protection
• High-carbon machining for stable thermal performance
• 334 mm outer diameter, 32 mm thickness, 30 mm minimum thickness
• 6/5 hole arrangement with 112 mm bolt hole circle and 67 mm hub bore
• Front axle application for select Mercedes-Benz SL600, SL500, and 600SL models

Detailed Description

Zimmermann manufactures this rotor to equivalent-quality spare part standards, with dimensions and material quality aligned to the specifications used by vehicle manufacturers. The coated finish helps maintain a cleaner appearance and adds anti-corrosion protection, while the internally vented construction supports heat dissipation during repeated braking. This rotor is a direct-fit replacement for front brake service on Mercedes-Benz SL600, Mercedes-Benz SL500, and Mercedes-Benz 600SL applications listed below. The Zimmermann 400.3647.20 is also cross-referenced to Carlson 17390 for the same application.

What This Rotor Helps Address

• Brake pulsation caused by rotor wear or thickness variation
• Reduced braking consistency from heat buildup in the front axle
• Corrosion on exposed rotor surfaces
• Noise or vibration associated with worn disc brake rotors
• Service replacement for front brake maintenance on Mercedes-Benz SL models

Fitment and Installation Notes

• Fits 1994-2003 Mercedes-Benz SL600, front
• Fits 1999-2002 Mercedes-Benz SL500, front, W/O Special Model Silver Arrow Edition
• Fits 1999-2002 Mercedes-Benz SL600, front, W/O AMG Performance Package
• Fits 1998 Mercedes-Benz SL600, front, W/O AMG Performance Package; From 06/1998
• Fits 1993 Mercedes-Benz 600SL, front

Verify rotor dimensions, hub bore, bolt pattern, and minimum thickness before installation. Because this is an internally vented front rotor, proper inspection of pads, calipers, and wheel-end components is recommended during brake service. Confirm vehicle configuration notes for Mercedes-Benz SL500 and SL600 models before ordering.

Quality Assurance

Zimmermann standard brake rotors are produced as equivalent-quality replacement parts and are manufactured to the dimensional and material requirements specified for the application. The coated surface and high-carbon machining reflect Zimmermann’s focus on OE-style fit and consistent brake performance.