Dorman 949-840 Air Suspension Compressor

Air Suspension Compressor for Mercedes-Benz S-Class

Dorman 949-840 is a standard replacement air suspension compressor built to match the fit and function of the original unit on specified Mercedes-Benz applications. It uses quality materials and a 12V electrical system to deliver reliable air supply for vehicles equipped with air suspension.

Compatible With Mercedes-Benz S450, S560, S63 AMG, Maybach S560, and related S-Class models that do not use Option Code 487 (Active Body Control). This Dorman 949-840 compressor is also a direct-fit solution for several Mercedes-Benz S-Class and Maybach applications from 2014-2021.

Key Features

• Standard replacement air suspension compressor
• 12V electrical system with 35 amp rating
• Maximum pressure rating: 350
• Black natural-finish housing
• Mounting bracket included
• Designed for specified Mercedes-Benz air suspension systems
• Part number: 949-840

Detailed Description

This air suspension compressor is engineered as an OE-style replacement for vehicles that rely on an electric air spring system. It is designed to restore air supply performance for the suspension system while matching the original compressor’s fit and function on the listed Mercedes-Benz S-Class and Maybach applications. The unit’s 12V design, 35 amp rating, and 350 maximum pressure specification make it a practical replacement for diagnosing or correcting compressor-related suspension issues. Part number 949-840 is a direct reference for shoppers searching for a Mercedes-Benz S-Class air suspension compressor replacement.

This part cross-references Arnott Industries P-3282 and P-3727 for the same application.

Common Uses

• Restores air pressure when the suspension compressor is no longer building pressure
• Addresses slow or uneven vehicle ride-height correction
• Helps resolve compressor noise caused by wear or internal damage
• Supports repair of air suspension warning lights tied to compressor performance
• Replaces a failed compressor on Mercedes-Benz S450, S560, and S63 AMG models

Installation Notes and Tips

Verify vehicle fitment by year, model, and the absence of Option Code 487 (Active Body Control) before installation. This compressor includes a mounting bracket, and the package contents list one air suspension compressor. Mounting hardware is not included. Confirm electrical connections, air lines, and system condition before returning the vehicle to service. For best results, inspect the air suspension system for leaks or related faults that may have contributed to compressor failure.

Quality Assurance

Dorman designs this replacement compressor to match original fit and function on specified applications and builds it from quality materials for dependable service. It is a standard replacement part for Mercedes-Benz air suspension repair work.

• Fits 2019-2021 Mercedes-Benz S450L, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2018-2021 Mercedes-Benz S560, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2014-2021 Mercedes-Benz S63 AMG, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2018-2020 Mercedes-Benz Maybach S560, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2018-2020 Mercedes-Benz Maybach S650, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2018-2020 Mercedes-Benz S450, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2019-2020 Mercedes-Benz S560e, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2019-2020 Mercedes-Benz S560L, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2016-2020 Mercedes-Benz S600L, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2015-2020 Mercedes-Benz S65 AMG, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2014-2019 Mercedes-Benz SL65 AMG, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2016-2018 Mercedes-Benz S400L, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2017 Mercedes-Benz Maybach S550, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2016-2017 Mercedes-Benz Maybach S600, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2014-2017 Mercedes-Benz S550, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2015-2017 Mercedes-Benz S550e, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2015-2017 Mercedes-Benz S600, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2014-2015 Mercedes-Benz S400, N/A, wo/Option Code 487 (Active Body Control)
• Fits 2014 Mercedes-Benz SL63 AMG, N/A, wo/Option Code 487 (Active Body Control)