ATE SP00122 Disc Brake Rotor - Front

ATE SP00122 Front Brake Rotor

ATE SP00122 is a front disc brake rotor built for Mercedes-Benz applications that call for a 320 mm vented rotor with a high-carbon, full-cast construction. It features a rust-resistant coating and a non-directional, dimpled braking surface for consistent service and easier maintenance.

Key Features

• High-carbon rotor material for stable braking performance
• Full cast construction with vented design
• Rust-resistant coating helps protect the rotor surface
• Dimpled, non-directional brake surface
• 320.00 mm outside diameter with 24.00 mm nominal thickness
• 22.00 mm discard thickness for wear monitoring
• 5 lug holes on a 112.00 mm bolt circle
• Center hole diameter: 67.00 mm

Detailed Description

ATE SP00122 is engineered as a premium replacement disc brake rotor for front axle service on select Mercedes-Benz SL-Class models. ATE draws on OE brake system manufacturing experience to produce aftermarket brake parts with precise dimensions and material selection, and this rotor reflects that approach with a high-carbon vented design, 158.00 mm inside diameter, and 50.50 mm overall height. The coated surface helps resist corrosion during storage and service, while the dimpled, non-directional finish supports even pad contact during braking. This part cross-references OE-style numbers 0004231512 and 2314230512 for the same application.

Vehicle Fitment

• Fits 2017-2020 Mercedes-Benz SL450, front. Fits North American OEM specifications and Sport Package.
• Fits 2017-2020 Mercedes-Benz SL550, front. Meets or exceeds OEM specifications for disc brake rotors in North America.
• Fits 2015-2016 Mercedes-Benz SL400, front. Fits North American OEM specifications and Sport Package.
• Fits 2013-2016 Mercedes-Benz SL550, front. Fits North American OEM specifications and Sport Package.

What It Helps Address

• Brake pulsation from a worn or uneven front rotor
• Corrosion on the rotor face or hat area
• Reduced braking consistency from heat-worn rotor surfaces
• Rotor replacement needs on Mercedes-Benz SL450, SL550, and SL400 front applications
• Service issues tied to rotor thickness approaching discard limits

Installation Notes and Tips

Confirm rotor dimensions, hub fit, and brake pad condition before installation. Clean the hub mounting surface thoroughly to help prevent runout-related vibration, and verify that the rotor is installed on the correct front position for the vehicle listed. Always compare the existing rotor to the replacement part number SP00122 and the vehicle’s OEM brake specifications before service.

Quality Assurance

ATE is part of Aumovio, a major original equipment brake system manufacturer, and its aftermarket brake components are produced using engineering and manufacturing standards developed from OE supply experience. SP00122 is built to the specifications listed above for direct-fit front brake service on the confirmed Mercedes-Benz applications.