Arnott P-3721 Air Suspension Compressor

Mercedes-Benz Air Suspension Compressor

Restore proper air suspension performance with this Arnott air suspension compressor for Mercedes-Benz CL-Class and S-Class models. Arnott P-3721 is a direct replacement compressor assembly built for the 2007-2014 Mercedes-Benz CL550, CL600, CL63 AMG, CL65 AMG, CL500 and the 2007-2013 Mercedes-Benz S350, S400, S500, S550, S600, S63 AMG, S65 AMG, and S450.

This compressor is brand new and produced by AMK, the same manufacturer that supplied the original compressor. It is a 12V unit with a mounting bracket, dryer, and relay included, making it a complete compressor assembly kit for OE-style replacement service.

Key Features

• Arnott P-3721 direct replacement air suspension compressor
• Brand new AMK-manufactured unit for Mercedes-Benz applications
• 12V compressor assembly kit with dryer included
• Mounting bracket included for proper installation support
• Relay included
• Black finish
• Standard grade replacement for OE compressor service

Detailed Description

Arnott P-3721 is engineered for Mercedes-Benz CL-Class W216 and S-Class W221 vehicles that use an air suspension compressor assembly. It cross-references Mercedes-Benz part numbers 2213200704 and 2213200904 for the same application. The compressor is compact and lightweight, and it is built as a direct OE replacement for the original Mercedes-Benz pump used on these chassis.

For long-tail search relevance, this part is a Mercedes-Benz CL550 air suspension compressor replacement, Mercedes-Benz S550 air suspension pump replacement, and Mercedes-Benz S-Class W221 compressor assembly for 2007-2013 models. It also serves as a Mercedes-Benz CL-Class W216 compressor replacement for 2007-2014 vehicles.

What It Helps Address

• Slow or weak air spring inflation
• Compressor failure causing suspension warning lights
• Loss of ride height control
• Extended compressor run time from a worn pump
• Air suspension system performance issues on CL-Class and S-Class models

Installation Notes and Tips

Verify the vehicle’s OE part number and chassis before installation. This compressor assembly includes a mounting bracket, dryer, and relay, but mounting hardware is not listed as included. Confirm electrical connections, air line routing, and system sealing before returning the vehicle to service. After installation, clear any suspension fault codes and check compressor operation under normal load.

Quality Assurance

Arnott supplies OE-style suspension components for Mercedes-Benz applications, and this compressor is produced by AMK, the original compressor manufacturer for this platform. That sourcing helps maintain fitment consistency and factory-style operation for the Mercedes-Benz CL-Class and S-Class air suspension system.