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Unity rear right air spring, black rubber bellows with metal end caps, new condition

Unity

Unity 15-512402 Rear Right Air Spring

SKU CH-BQMY-V692C

Replacement rear right air spring for Mercedes-Benz W212 and W218 models from 2010 to 2017

  • Restores air suspension performance for Airmatic models
  • Designed for W212 and W218 chassis vehicles
  • Fits CLS and E-Class models from 2010 through 2017
  • Unity brand with over 50 years aftermarket experience
  • Rear right air spring ensures trouble-free installation

Direct-Fit Rear Right Air Spring

This rear right air spring is engineered as a direct replacement for the factory air suspension units on specific Mercedes-Benz models. It serves owners of 2012-2017 CLS550 and CLS63 AMG W218 chassis vehicles, as well as 2010-2016 E-Class W212 chassis models including E250, E350, E400, E550 and E63 AMG variants. The part restores the air ride system on Airmatic-equipped cars only.

Restores Factory Ride Quality

The spring is manufactured to restore the original air suspension performance, delivering a safe and comfortable air ride after the original unit fails. It is built to withstand the test of time, ensuring the suspension system maintains proper ride height and damping characteristics during normal driving conditions. Installation is designed to be trouble-free, returning the chassis to its intended handling balance.

Replaces Worn OEM Air Springs

This component replaces a leaking, cracked or collapsed original air spring that triggers suspension warning lights or causes the vehicle to sit low. The upgrade is worth it when the compressor runs excessively or the rear corner drops overnight, indicating the rubber bladder has failed. It is not for vehicles without factory Airmatic suspension or for front axle positions.

Highlights

  • Restores air suspension performance for Airmatic models
  • Designed for W212 and W218 chassis vehicles
  • Fits CLS and E-Class models from 2010 through 2017
  • Unity brand with over 50 years aftermarket experience
  • Rear right air spring ensures trouble-free installation

Specifications

BrandUNITY

Questions about this item

How is the Unity 15-512402 rear right air spring installed on a W212 or W218 chassis, and which step is commonly missed?

The unit bolts to the factory Airmatic mounts on the rear right corner; the step often missed is depressurising the system and disconnecting the air line before removing the old spring, otherwise the line can whip or the fitting can be damaged.

What maintenance or replacement will this air spring need later?

Inspect the rubber bellows for cracking or perishing every 50 000 km and replace the unit if leaks appear at the crimp rings or the solenoid valve connector; the spring itself is not serviceable.

What limit appears first under sustained use on a CLS550 or E350?

The rubber bellows fatigue from repeated inflation cycles and heat cycles, leading to slow pressure loss that triggers the compressor to run continuously before the piston or mount hardware fails.

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