Arnott A-3636 Air Suspension Spring - Rear

Rear Air Suspension Spring for BMW

The Arnott A-3636 is a rear air suspension spring built for select BMW 7 Series and ActiveHybrid 7 models. It uses a rubber bellows design with a sleeve-style construction to restore rear ride height control and consistent suspension response.

Compatible with rear applications on BMW 740i, 740Li, 740Li xDrive, 740Ld xDrive, 750i, 750i xDrive, 750Li, 750Li xDrive, 760Li, and ActiveHybrid 7 models from 2009-2015, depending on vehicle configuration.

• Rear air suspension spring for BMW luxury sedans
• Arnott part number A-3636
• Rubber bellows material with black sleeve-style construction
• Mounting hardware included
• Upper mount type: bolt; lower mount type: bracket
• Standard-grade replacement for rear air suspension service

Product Details

Arnott engineers its air springs through research and development, then validates them with lab and road testing before release. This rear air spring uses multi-ply air sleeve construction sourced from established rubber manufacturers such as ContiTech and Goodyear, then is assembled and tested in Arnott facilities using ISO-certified quality management practices. The A-3636 is designed for BMW rear suspension service where maintaining proper ride height, comfort, and load support is important.

This part cross-references Genuine 37126796929 and 37126796930 for the same application. It also references OE and aftermarket numbers commonly used on BMW 7 Series rear air suspension systems, including A-3636 for ordering and service identification.

Common Problems It Can Address

• Rear end sagging after air spring wear
• Uneven ride height at the rear of the vehicle
• Air leaks from aging rubber bellows
• Harsh or inconsistent rear suspension response
• Suspension warning concerns related to loss of air support

Installation Notes and Tips

Verify rear fitment by model and year before installation. Confirm the upper bolt mount and lower bracket mount match the original suspension layout on the vehicle. Inspect related air lines, fittings, and suspension components for wear or leakage during replacement so the new spring can operate correctly.

Quality Assurance

Arnott air springs are developed in-house, tested in laboratory and vehicle conditions, and assembled in Arnott American and EU facilities under ISO-certified quality management principles. The A-3636 is built to support durable rear suspension performance on BMW 740i, 750Li, and related 7 Series applications.