1V6024 Mercedes-Benz Air Spring A9423200121 | 4390NP01

The 1V6024 is the steel-piston version of the 0A4390-1 family. Mercedes-Benz A9423200121 is the catalogue vehicle reference, while ContiTech 4390NP01 and Airtech 34390-01K identify relevant aftermarket entries. Unlike a piston-free bellows listing, this model includes the complete lower piston configuration shown in the photographs.

Check the lower attachment and the central upper air connection against the removed unit. The catalogue lists a 245 mm bellows diameter and a 617 mm natural height for identification. Those figures differ from the shorter piston-free configuration and are not pressure or carrying-capacity claims.

If a customer supplies only the marking 4390, request the complete suffix and a bottom photograph before approving a substitute. The current drawing is the appropriate reference for bolt positions, connection details and final dimensional confirmation.

Manufacturer names and vehicle numbers are provided for replacement identification. The listed cross references come from the YITAO V-series catalogue and must be checked with the complete mounting configuration; they do not represent a claim that this is an original-equipment branded product.

For a quotation, provide the model, required quantity and destination port. The indicative price is approximately USD 35 per piece, FOB, with a minimum order of 10 pieces and a standard lead time of 30 days. Final price is confirmed in the quotation.

Company total annual production capacity is 3,000,000 pieces; allocation for this specific model is confirmed against the order schedule. Payment method is T/T, with the detailed terms agreed in the quotation. Export carton packing is specified below. Warranty is 14 months from the bill of lading date.

Final carton details are confirmed for the order. Supply and installation should follow the approved technical drawing and the vehicle suspension manufacturer instructions.