Arnott P-3722 Air Suspension Compressor

Mercedes-Benz Air Suspension Compressor

Restore proper air suspension operation with Arnott P-3722, a direct replacement compressor for select Mercedes-Benz GL-Class and ML-Class models. This new 12V assembly is produced by AMK, the same manufacturer that supplied the original compressor, and it is built for compact packaging, low weight, and reliable output.

Key Features

• Direct replacement air suspension compressor for Mercedes-Benz GL-Class and ML-Class applications
• Brand new AMK-manufactured unit, matching the original compressor source
• Includes compressor assembly kit with mounting bracket, dryer, and relay
• 12V standard-grade design with black finish
• Three mounting holes for OE-style installation
• Cross-reference part number: Mercedes-Benz 1643200004

Detailed Product Overview

Arnott P-3722 is an OE-style Mercedes-Benz air suspension compressor built for the 2007-2012 GL-Class (X164) and 2006-2011 ML-Class (W164). It is engineered as a 100% direct replacement for the original Mercedes-Benz compressor and is supplied new by AMK, the original compressor manufacturer. For drivers searching for a Mercedes-Benz GL450 air suspension compressor, ML350 air suspension compressor, or a replacement compressor for GL550 and ML63 AMG models, this unit provides the correct fitment and factory-style configuration.

Compatible With 2007-2012 Mercedes-Benz GL450, 2008-2012 Mercedes-Benz GL500, 2008-2012 Mercedes-Benz GL550, 2007-2009 Mercedes-Benz GL320, 2010-2012 Mercedes-Benz GL350, 2006-2011 Mercedes-Benz ML350, 2006-2011 Mercedes-Benz ML500, 2008-2011 Mercedes-Benz ML550, 2007-2011 Mercedes-Benz ML63 AMG, 2010-2011 Mercedes-Benz ML450, and 2007-2009 Mercedes-Benz ML320.

Common Problems This Part Can Address

• Air suspension compressor failure or weak pump output
• Slow vehicle lift after startup
• Suspension warning light related to compressor performance
• Loss of ride height caused by insufficient air supply
• Noise or overheating from a worn original compressor

Installation Notes

Verify the vehicle’s OE part number and connector configuration before installation. This compressor includes a mounting bracket, dryer, and relay, but does not include mounting hardware or a protective cover. Professional installation is recommended to confirm proper system operation, leak-free connections, and correct compressor cycling after replacement.

Quality Assurance

Arnott sources this compressor from AMK, the original manufacturer for the OE unit, to maintain factory-style fit and function for Mercedes-Benz GL-Class and ML-Class air suspension systems. Part number P-3722 is a new replacement component built for standard-duty service in the specified applications.