Arnott AS-3403 Air Suspension Strut - Front Left

Arnott AS-3403 Front Left Air Strut

The Arnott AS-3403 is a new aftermarket air suspension strut for the front left of select 2016-2022 BMW 7-Series models with rear-wheel drive. Built with premium components and tuned to match OE ride characteristics, it supports the vehicle’s auto leveling system while restoring proper front suspension performance.

Key Features

• New Arnott engineered air suspension strut for the front left position
• Fits 2016-2022 BMW 740i, front left
• Fits 2020-2022 BMW 745e, front left
• Fits 2016-2019 BMW 750i, front left
• Fits 2016-2019 BMW 750Li, front left
• Air-adjustable design with air ride suspension functionality
• Hydraulic internal damper tuned to ride like OE
• Multi-ply ContiTech air sleeve for durable air spring performance
• CNC-machined top mount made from aircraft-quality aluminum
• Includes bearing plate, boot, spring isolators, upper mounting isolator, and mounting hardware
• Designed and assembled in the USA

Product Details

Arnott’s AS-3403 is a universal front air strut assembly for the left side and right side design family, with this application listed for the front left position on BMW 7-Series G11/G12 rear-wheel-drive models. It uses a progressive spring rate, gas-charged construction, and a clevis lower mount with stud-style upper mount to help maintain consistent ride height and suspension response. This part cross-references BMW OE numbers 37106874587 and 37106877055 for the same application.

The Arnott New product line focuses on replacement air suspension components built from Tier 1 materials and assembled for direct-fit service. For BMW 7-Series owners searching for a front left air suspension strut for 2016-2022 BMW 740i, 745e, 750i, or 750Li, AS-3403 provides a service-ready replacement that works with the vehicle’s auto leveling functionality.

Common Issues This Part May Address

• Front-end sagging from a worn air spring or leaking bladder
• Uneven ride height at the left front corner
• Harsh ride caused by a failing internal damper
• Air suspension warning lights related to strut performance loss
• Noisy or unstable front suspension operation

Installation Notes

Verify the vehicle is a rear-wheel-drive BMW 7-Series G11/G12 application before installation. Confirm the front left position, inspect air lines and mounting points for wear, and follow factory service procedures for depressurizing and calibrating the suspension system after replacement. Because this strut supports auto leveling, system checks and alignment verification are recommended after installation.

Quality Assurance

AS-3403 is a new Arnott assembly built with premium components, including a ContiTech air sleeve, heavy-duty crimping rings, long-lasting seals, and a CNC-machined aluminum top mount. It is engineered to deliver OE-style ride behavior for BMW 7-Series air suspension service.