Unity Automotive 15-512401 rear left air suspension spring for the 2015-2018 Mercedes-Benz CLS400 and other vehicles supports the rear left corner of the car on compressed air. Also sold as an air spring/bag, it works within the Airmatic air suspension.
A leaking air suspension spring can show as the rear left corner sitting low, a lean after parking or a suspension warning message. With the engine off, compare that corner's ride height with the right side and look for cracks in the bag. A line, valve or the compressor can also let a corner sag, so find the cause first.
The 2015-2018 Mercedes-Benz CLS400, the 2012-2018 Mercedes-Benz CLS500 and the 2012-2018 Mercedes-Benz CLS550 take this spring, along with other vehicles. It is made for chassis W218 with Airmatic, and the rear left side uses one. If your car is not named here, find your year and model in the "Vehicles it fits" section. Both rear air suspension springs are normally replaced together, so order the right side as its own part; this listing is one spring.
Fit and size
Build and materials
Interchange: AS-7041
This part cross-references / interchanges with the following part numbers:
Does the Unity Automotive 15-512401 air spring fit the 2015-2018 Mercedes-Benz CLS400?
Yes. Unity Automotive 15-512401 is the rear left air suspension spring for the 2015-2018 Mercedes-Benz CLS400 and also fits the 2012-2018 Mercedes-Benz CLS500. Other cars are in the "Vehicles it fits" section.
Is the 15-512401 air suspension spring for the rear left or rear right?
Rear left. Unity Automotive 15-512401 is the rear left air suspension spring, and the rear right side is a separate part.
Is this air suspension spring made for cars with Airmatic?
Yes. This rear left spring is listed for chassis W218 with Airmatic. The listing is one spring.
What can a failing rear air suspension spring look like?
The rear left corner may sit low, or a suspension warning message may appear. Cracks in the bag are another visible sign, and a shop can test the air system.
Is Unity Automotive 15-512401 a cross-reference for AS-7041?
AS-7041 is listed as an interchange number for Unity Automotive 15-512401, so it is a cross-reference for this rear left air suspension spring.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
