Bilstein B3 Rear Air Suspension Spring/Bag/Bellow/Bladder for BMW 5 Series E61 Touring Estate Wagon 2004-2010 (Rear Axle) Self-Levelling Level Control OE Spec Pneumatic Air Ride Replacement – Part 40-288871

Bilstein B3 Rear Pneumatic Spring for BMW 5 Series E61 Estate 2004 to 2010 - Part No. 40-288871

Restore the rear height control and comfort on your BMW 5 Series E61 estate with this Bilstein B3 rear air ride spring, part number 40-288871. This direct-fit OE-spec pneumatic spring replaces the tired or leaking rear air bladder on level control cars and brings back the smooth, quiet ride your touring deserves.

We install these in our own workshop and on customer vehicles, and the results are consistently superb. Expect precise height regulation, stable handling with passengers or cargo, confident towing support and dependable durability from a brand enthusiasts trust.

Key reasons to choose this Bilstein rear air spring

• OEM-level quality and fit for E61 estate models with factory rear level control
• Direct replacement for the rear air bag on the back axle - no modifications
• Restores correct ride height, comfort and load support
• Excellent reliability and long service life from Bilstein’s B3 range
• Ideal fix for sagging rear end, uneven stance, compressor running too often, or height errors

Compatibility

Suits BMW 5 Series Touring E61 models built 2004 to 2010 that left the factory with rear pneumatic level control. Covers a wide range of petrol and diesel variants including 520i, 523i, 525i, 530i, 535i, 545i, 550i, 520d, 525d, 530d, 535d and xDrive derivatives where equipped with rear air suspension. Fitting position is rear axle. Spring design is an air spring that works with a separate shock absorber, as per the original layout.

Not for E60 saloon cars without rear air suspension.

Part numbers and technical info

• Brand: Bilstein
• Series: B3
• Part number: 40-288871 (also referenced as BILSTEIN-40-288871)
• EAN: 4025258841010
• Position: Rear axle
• Type: Rear air ride spring, pneumatic bellow

Fitting and support

We recommend professional installation and replacing air springs in pairs for balanced performance. MJ Modifications offers supply and fitting at our Warwickshire workshop. To request a fitting quote or book in, email info@mjmodifications.co.uk.

Order with confidence

Unsure on compatibility for your registration or VIN. Send us your details before checkout and we will confirm this rear level control spring suits your touring.

What it fixes

• Rear of car sits low after parking or drops overnight
• Compressor frequently runs or is noisy due to a leaking air bladder
• Car leans on one side or shows suspension faults on the dash
• Harsh ride at the back or poor towing support

Why buy from us

• Used daily in our workshop - proven ride quality and longevity
• Fast, knowledgeable support from BMW suspension specialists
• Professional fitting available from MJ Modifications in Warwickshire

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