Arnott P-3258 Air Suspension Compressor

Arnott P-3258 Air Suspension Compressor

The Arnott P-3258 is a new air suspension compressor assembly for Mercedes-Benz SUVs that need OE-style air supply and system recovery. Built to OE specifications, it uses vehicle-specific mounting brackets and connects to the factory electrical and air connections for a direct replacement on supported Mercedes-Benz ML-Class and GL-Class applications.

Compatible With Mercedes-Benz ML-Class and GL-Class models, this compressor is built for 12V systems and includes an integrated air dryer, relay, and thermal overload protection. The Arnott NEW product line focuses on direct-fit suspension replacement parts engineered for factory-style operation and straightforward serviceability.

Key Features

• Direct replacement air suspension compressor for Mercedes-Benz applications
• Arnott part number P-3258
• Built to OE specifications for fit, function, and mounting
• Integrated air dryer included
• New relay included
• Thermal overload protection built in
• Vehicle-specific mounting brackets for a direct installation path
• Reuses factory isolators and mounting hardware
• 12V electrical system with female connector
• Maximum pressure: 180
• Airflow rate: 1.34 / 36

Detailed Description

The Arnott P-3258 air suspension compressor is a direct OE replacement for Mercedes-Benz vehicles that rely on air suspension performance and ride-height control. It is manufactured with quality components, extensively tested by Arnott engineers, and assembled to match the original compressor’s electrical connector, airline fitting, and intake hose interface. This part cross-references Mercedes-Benz 1663200104 and 166320010480 for the same application. Use this compressor when servicing Mercedes-Benz ML350, ML550, GL450, and related models that require a factory-style air supply unit. The part number P-3258 is also a useful reference when sourcing a replacement compressor for Mercedes-Benz ML-Class and GL-Class air suspension systems.

What It Helps Address

• Slow or weak air suspension lift
• Compressor noise or compressor failure
• Vehicle sitting low from insufficient air supply
• Air suspension warning messages related to compressor performance
• Loss of ride-height control caused by a worn compressor assembly

Installation Notes and Tips

• Fits 2012-2015 Mercedes-Benz ML350, N/A
• Fits 2012-2015 Mercedes-Benz ML500, N/A
• Fits 2012-2015 Mercedes-Benz ML550, N/A
• Fits 2012-2015 Mercedes-Benz ML63 AMG, N/A
• Fits 2013-2016 Mercedes-Benz GL350, N/A
• Fits 2013-2016 Mercedes-Benz GL450, N/A
• Fits 2013-2016 Mercedes-Benz GL550, N/A
• Fits 2013-2016 Mercedes-Benz GL63 AMG, N/A
• Fits 2016-2019 Mercedes-Benz GLE350, N/A
• Fits 2017-2019 Mercedes-Benz GLS550, N/A
• Fits 2020 Mercedes-Benz GLE63 AMG, N/A

Before installation, confirm the vehicle’s OE compressor part number, connector style, airline fitting, and intake hose routing. The compressor is designed to mate with factory electrical connectors and uses the original isolators and mounting hardware where applicable. Verify the air suspension system is free of leaks so the replacement compressor is not overworked after installation.

Quality Assurance

This Arnott compressor is built to OE specifications and tested by Arnott engineers for durability, functionality, and fit. The assembly includes thermal overload protection and an integrated dryer to support reliable air suspension operation in Mercedes-Benz ML-Class and GL-Class applications.