Arnott AS-3373 Air Suspension Strut - Front Left

OE Remanufactured Front Left Air Strut

Arnott AS-3373 is a remanufactured front left air suspension strut for select BMW xDrive models. It restores OE-style ride control and auto-leveling performance for the 2016-2021 BMW 7-Series G11/G12 chassis and related applications.

The Arnott remanufactured line focuses on rebuilding original suspension components to OE standards. For this application, the strut is cleaned, inspected, media blasted, and rebuilt with new wear parts and a new Continental ContiTech air bladder.

• Fits 2016-2021 BMW 750i xDrive, front left
• Fits 2017-2021 BMW 750Li xDrive, front left
• Fits 2017-2021 BMW 740i xDrive, front left
• Fits 2020-2021 BMW 745e xDrive, front left
• Fits 2020-2021 BMW 745Le xDrive, front left
• Fits 2018-2019 BMW 640i xDrive Gran Turismo, front left
• Fits 2022 BMW 740i xDrive, front left
• Fits 2022 BMW 745e xDrive, front left
• Fits 2022 BMW 745Le xDrive, front left
• Fits 2022 BMW 750i xDrive, front left
• Fits 2022 BMW 750Li xDrive, front left

Key Features

• Remanufactured OE BMW front left air suspension strut
• New multi-ply rubber air bladder from Continental ContiTech
• Recharged damper with new high-performance shock oil
• Replaced piston and rod guides plus seal pack
• Dyno and functionally tested for OE performance
• Corrosion-resistant painted finish
• Adjustable damping and air ride suspension
• Hydraulic internal damper with progressive spring rate
• Includes bearing plate, boot, spring isolators, and upper mounting isolator

Detailed Description

Arnott AS-3373 is a remanufactured air suspension strut built for the front left corner of select BMW 7-Series xDrive models, including the BMW 750i xDrive, BMW 750Li xDrive, BMW 740i xDrive, BMW 745e xDrive, and BMW 745Le xDrive. It is also listed for the 2018-2019 BMW 640i xDrive Gran Turismo front left application. This part number, AS-3373, is engineered to maintain the vehicle’s auto-leveling function and OE damping behavior.

Each unit is inspected, steam cleaned, and media blasted to bare metal before rebuilding. Arnott replaces worn internal components, refills the damper with new shock oil, and adds a new Continental ContiTech air bladder with heavy-duty crimping rings, O-rings, and a new airline fitting. The result is a remanufactured BMW front left air suspension strut that supports consistent ride height and controlled suspension response.

This part cross-references BMW 37106874597 and 37106877559 for the same application.

What It Helps Fix

• Front-left air strut sagging or loss of ride height
• Uneven stance on BMW xDrive air suspension systems
• Excessive bouncing, harshness, or reduced damping control
• Air leaks from a worn bladder or fittings
• Suspension warning lights tied to air spring or damper wear

Installation Notes and Tips

Verify the vehicle’s chassis, drivetrain, and front-left position before ordering. This AS-3373 air suspension strut uses a threaded upper mount, base cup lower mount, and includes an upper mounting isolator, bearing plate, boot, and spring isolators. Mounting hardware is not included. After installation, perform a ride-height and system check to confirm proper leveling and damping operation.

Quality Assurance

Arnott remanufactured struts are dyno tested and functionally tested to confirm OE-level performance characteristics. The rebuilt assembly is finished with corrosion-resistant paint and assembled with new wear components to support reliable operation in BMW air suspension systems.