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Pair of silver electronic air strut assemblies with black rubber bellows and top mounts

Unity

Unity 113701/113702 Front Air Strut Assembly Kit

SKU CH-K0VX-HWPYW

Kit includes two electronic front air strut assemblies for 2007–2013 Mercedes-Benz models excluding Airmatic

  • Kit covers 2007-2013 Mercedes-Benz S550 models
  • Two electronic air struts restore smooth ride quality
  • Unity's 50-year heritage backs long-lasting reliability
  • OE-spec assemblies ensure trouble-free installation fit
  • Front strut kit includes both 113701 and 113702 parts

Unity Front Air Strut Kit

This kit provides two electronic air suspension strut assemblies for select Mercedes-Benz models. It replaces faulty original units to restore ride comfort and structural support. The assemblies are built to original equipment specifications for direct fitment. Unity Automotive manufactures the parts with over 50 years of aftermarket experience.

Fits CL550 S350 S450 S550

The kit fits 2009 to 2013 CL550, 2012 to 2013 S350, 2008 to 2011 S450 and 2007 to 2013 S550 models. It excludes vehicles equipped with Airmatic suspension systems. Owners of other Mercedes models or earlier model years need a different application. Vehicles without electronic air suspension cannot use this kit.

Two Electronic Strut Assemblies

The package contains two complete electronic air strut assemblies ready for installation. Each unit integrates the electronic controls required by the factory suspension system. This paired configuration replaces both front corners in a single service. No additional electronic modules or sensors are included in the kit.

How it compares

Measured against everything we stock in Brake Service Tools & Presses, at today’s prices. Recalculated every night.

Price $654.99
Pricier than about 94% of the 1,702 comparable items (median $86.99).

Specifications

Product
Brand nameUNITY

Questions about this item

How much heat does the 113701/113702 front air strut kit generate during continuous daily driving?

The electronic air struts operate within normal suspension temperature ranges; no abnormal heat buildup is reported under standard load conditions.

Which existing suspension components must remain on the vehicle for the 113701/113702 kit to install correctly?

Factory upper mounts, lower control arms and the air compressor system must be retained; the kit replaces only the strut assemblies.

Will the 113701/113702 kit function with the original Airmatic control module on a 2009 Mercedes-Benz S550?

The kit is designed as a direct OE-spec replacement for non-Airmatic models only; compatibility with the Airmatic module is not supported.

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