Zimmermann 400.3683.20 Disc Brake Rotor - Front

Zimmermann Front Brake Rotor for Mercedes-Benz

The Zimmermann 400.3683.20 is a coated front disc brake rotor built to OE-style dimensions for select Mercedes-Benz GLE and ML applications. It features an internally vented design, a 330 mm outer diameter, and corrosion-resistant coated surface treatment for a cleaner appearance and dependable braking performance.

Key Features

• Part number: 400.3683.20
• Brand: Zimmermann
• Disc brake rotor with internally vented construction
• 330 mm outer diameter, 32 mm thickness, 29.4 mm minimum thickness
• Coated surface for improved corrosion resistance
• 112 mm bolt hole circle, 67 mm hub bore, 8/5 hole arrangement
• Height: 54.5 mm; weight: 11.1 kg
• OE-style replacement rotor manufactured to specified dimensions and material quality

Detailed Description

Zimmermann 400.3683.20 is a front brake rotor engineered for Mercedes-Benz vehicles that require a 330 mm internally vented disc. The coated finish helps resist surface corrosion while maintaining a more refined appearance, and the rotor dimensions are matched to the application requirements for consistent fitment. This part cross-references Brembo 09.A956.11 for the same application. Compatible With Mercedes-Benz GLE350 front, Mercedes-Benz GLE300d front, Mercedes-Benz GLE350d front, Mercedes-Benz ML250 front, and Mercedes-Benz ML350 front applications listed below.

Vehicle Fitment

• Fits 2018 Mercedes-Benz GLE350, front, for vehicle without AMG Line exterior/AMG Sport package exterior.
• Fits 2016-2017 Mercedes-Benz GLE350, front, w/o AMG Line exterior; w/o AMG Sport Package exterior.
• Fits 2016 Mercedes-Benz GLE300d, front, w/o B4 reinforcement on special protection version; w/o B5 armoring for special protection version; w/o AMG Line exterior; w/o AMG Sport Package exterior; w/o Sport Brake.
• Fits 2016 Mercedes-Benz GLE350d, front, w/o AMG Line exterior; w/o AMG Sport Package exterior; w/o Sport Brake.
• Fits 2015 Mercedes-Benz ML250, front, vehicle equipment for vehicles without AMG sports package; product note: COAT Z.
• Fits 2015 Mercedes-Benz ML250, front, w/o B4 reinforcement on special protection version; w/o B5 armoring for special protection version; w/o AMG Line exterior; w/o AMG Sport Package exterior.
• Fits 2012-2015 Mercedes-Benz ML350, front, w/o B4 reinforcement on special protection version; w/o B5 armoring for special protection version; w/o AMG Line exterior; w/o AMG Sport Package exterior.

What It Helps Address

• Front brake rotor wear from normal braking use
• Rotor surface corrosion on exposed brake components
• Brake pulsation caused by a worn or out-of-spec disc
• Reduced braking consistency from a rotor below minimum thickness
• Fitment issues when replacing the original Mercedes-Benz front rotor

Installation Notes and Tips

Verify rotor diameter, thickness, hub bore, bolt pattern, and vehicle equipment before installation. This rotor is for front axle applications only and is not listed for AMG Line exterior, AMG Sport package exterior, or Sport Brake-equipped vehicles where noted. Measure the existing rotor and confirm minimum thickness requirements before service.

Quality Assurance

Zimmermann standard brake rotors are produced as OE-style replacement parts with dimensions and material quality specified for the application. The coated surface reflects Zimmermann’s Coat Z anti-corrosion finish, introduced to improve appearance and help protect the rotor surface.