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Unity rear left air spring for BMW wagon suspension, new condition

Unity

Unity 15-525501 Rear Left Air Spring

SKU CH-TGVA-XX5BF

Replaces the rear left air spring on 1999-2003 BMW 5-series wagons with self-leveling suspension

  • Restores factory ride height with direct-fit air spring
  • Fits 1999-2003 BMW 5 Series Wagons with self-leveling suspension
  • 50-plus years of aftermarket suspension manufacturing expertise
  • Trouble-free installation designed for long-lasting reliability
  • Elite Suspension Line quality for safe, comfortable air ride

Unity Rear Left Air Spring for BMW Wagons

This Unity air spring replaces the rear left unit on 1999 to 2003 BMW 5 Series wagons equipped with self-leveling suspension. It fits 525i, 528i and 540i wagon models from the specified years. The part restores the air suspension system to provide a safe and comfortable ride.

Check model year and suspension type before ordering

Confirm the vehicle is a wagon produced between 1999 and 2003 with the self-leveling option. Sport suspension models are excluded from fitment. Verify the original equipment part number matches 15-525501 for the rear left position.

Elite Suspension Line quality for direct replacement

The air spring is manufactured by Unity Automotive, a company with over 50 years of aftermarket experience. It is designed for trouble-free installation and long-lasting reliability as a direct replacement component. No additional accessories or software are included with this part.

How it compares

Measured against everything we stock in Engine Parts, Chassis & Socket Sets, at today’s prices. Recalculated every night.

Price $51.99
Cheaper than about 60% of the 231 comparable items (median $62.99).

Specifications

Product
Brand nameUNITY

Questions about this item

What comes in the box and what else do I need to install the 15-525501 air spring?

The box contains the rear left air spring only. Mounting hardware, air lines or compressor components are not included and must be sourced separately.

How do I know the 15-525501 is the correct version for my wagon?

This unit fits 1999-2000 528i, 2001-2003 525i and 1999-2003 540i wagons equipped with self-leveling suspension. Sport suspension models are excluded.

What does the self-leveling fitment note mean once the spring is on the car?

The spring restores the factory self-leveling function, keeping ride height constant regardless of load. It will not work on wagons with sport suspension.

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