Arnott P-3731 Air Suspension Compressor

Direct Replacement Air Suspension Compressor

Restore proper air suspension performance with Arnott P-3731, a brand new direct replacement compressor for select Land Rover applications. Built by AMK, the original compressor manufacturer, this unit is engineered for the 2014-2021 Land Rover Range Rover and 2014-2017 Range Rover Sport.

Arnott’s NEW product line focuses on replacement suspension components that match OE fitment and function. This Land Rover Range Rover compressor assembly is a practical solution when the original pump is slow, noisy, or no longer maintaining ride height.

Key Features

• Brand new air suspension compressor assembly kit
• Direct replacement for the original OE compressor
• Produced by AMK, the original equipment manufacturer
• Includes dryer and relay
• 12V system with a maximum pressure rating of 185
• Black finish with 3 mounting holes
• Compatible with 2014-2021 Land Rover Range Rover and 2014-2017 Range Rover Sport
• Arnott part number P-3731

Detailed Description

Arnott P-3731 is a replacement air suspension compressor for the Land Rover Range Rover L405 and Range Rover Sport L494 platforms. It is built as a 100% direct replacement for the factory compressor and is manufactured by AMK, the same company that supplied the original unit. The compact, lightweight design supports efficient operation while maintaining OE-style fitment for the specified Land Rover models. This part number, P-3731, is intended for drivers replacing a worn or failing compressor on a Range Rover or Range Rover Sport with factory air suspension.

This part cross-references Land Rover OE numbers such as LR037070 and LR121263 for the same application.

What It Helps Address

• Slow or weak air suspension inflation
• Compressor noise from a worn pump
• Vehicle sagging after parking
• Air suspension warning messages related to compressor performance
• Loss of ride-height control on equipped Land Rover models

Installation Notes and Tips

Verify vehicle fitment by year and model before installation. This compressor is a direct replacement for the listed Range Rover and Range Rover Sport applications, and it includes a dryer and relay. Mounting hardware and a mounting bracket are not included. Inspect the air suspension system for leaks, valve block issues, or damaged lines before replacing the compressor to help prevent repeat failure.

Quality Assurance

Arnott’s NEW line is built around OE-style replacement parts for air suspension systems, and this compressor is manufactured by AMK, the original supplier for the factory unit. That OE-source manufacturing helps support consistent fitment and system performance for the specified Land Rover applications.