Mercedes-Benz Suspension Air Bag with Steel Piston - 1V6026 A9423200221

The steel piston is the key supply difference for the 1V6026 suspension air bag. This Mercedes-Benz reference family uses bellows 0A4390-2 and is listed against ContiTech 4390NP02 and Phoenix 1KF21-2NP. Buyers looking for A9423200221 should check the complete assembly shown here, including the upper plate connections and the shaped lower piston, rather than ordering only by the appearance of the rubber sleeve.

The pictures document the top connection area, the side profile and the underside. Protective caps are shown on the connections during photography; they are not vehicle hose fittings. Use these views to compare the arrangement with your existing part, then confirm mounting details against the drawing.

The catalogue records a 245 mm bellows diameter and an unloaded natural height of 617 mm. Neither dimension should be treated as a universal installation setting.

A bellows family can appear in both piston-free and assembled variants. For that reason, retain the full YITAO code 1V6026 on the enquiry and describe whether the workshop needs the steel lower piston included. If an old invoice gives only a short supplier number, provide a photograph or the vehicle OE record to avoid changing the scope of supply.

• Can a similar-looking unit be substituted automatically? No. Connections and the lower attachment still need confirmation.
• Are the listed supplier names the brand of the delivered product? No; these names describe catalogue replacement references.
• Please send any different plate or piston details with the enquiry so the quotation can identify the correct configuration.