Bilstein B3 40-221601 Rear Left (Nearside LH/NSR) Air Spring | Suspension Air Bag/Bellow/Bladder for BMW X5 E53 2000-2006 – OE Replacement Air Ride Pneumatic Spring – Fits 3.0i 4.4i 4.6is 4.8is 3.0d

Bilstein B3 40-221601 Rear Nearside Pneumatic Suspension Bag for BMW X5 E53 2000 to 2006

Bring your E53 back to the smooth, composed drive it left the factory with. The Bilstein B3 40-221601 rear nearside pneumatic suspension bag is a genuine OE-grade solution for BMW X5 models built from 2000 to 2006. If your X5 sits low on one corner, drops overnight, rides harshly, or the compressor is constantly running, this premium Bilstein unit restores correct ride height, comfort and confidence.

Trusted by enthusiasts and garages alike, the B3 rear NS air bellow delivers precise levelling, quiet operation and dependable sealing. We have installed many of these on customer X5 E53 vehicles at MJ Modifications and the feedback is consistently excellent. Owners report a major improvement in stability, refinement and stance straight after fitting.

Why this Bilstein B3 is the smart fix

• Engineered to OE specification for the BMW X5 E53 rear nearside position
• Restores correct ride height and self-levelling performance
• Direct-fit design for straightforward replacement of the original air bellow
• Smooth, quiet operation for refined everyday driving and motorway stability
• Designed to work with the factory air ride system and original dampers
• Ideal when your vehicle shows sagging, uneven stance or air leaks

Fitment and compatibility

For BMW X5 E53 models 01.2000 to 12.2006:

• 3.0i petrol
• 4.4i petrol
• 4.6is petrol
• 4.8is petrol
• 3.0d diesel

Part numbers and identifiers

Looking for the opposite side

Need the matching rear offside component. Choose Bilstein 40-221618 for the right-hand side to keep both corners balanced.

Our recommendation

For the best long-term result many owners replace both rear pneumatic elements at the same time. This helps maintain even ride height and consistent behaviour under load.

Compatibility check

We verify fitment before dispatch. Add your UK registration number or the last 7 of your VIN at checkout and we will confirm this part suits your specific X5 E53.

Professional fitting

MJ Modifications offers expert installation at our Warwickshire workshop. For a fitting quote or to book, email info@mjmodifications.co.uk.

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