MAHLE 9123KM Piston Ring Set Box Label - CP 20 Cross Reference 2M139 E251K

This is a photograph of a MAHLE (Clevite) piston ring set box label, not a wiring or fuse diagram. The label identifies the contents as one set of piston rings, part number designation CP 20, with cross-reference part numbers 9123KM, 2M139, and E251K. The box notes 'CONTAINS STEEL TOP RING,' indicating the top compression ring is steel. Additional identifying codes on the label include 12H18CD1 (likely a date/lot code), 2532210, and machine-readable serial strings (01)14009026534998 and (21)BS8M6R20089C1M accompanying a Data Matrix barcode. The product is marked 'Made in the U.S.A. / Fabriqué aux É.-U.' and directs users to verify the check code at www.mahle-aftermarket.com. The box exterior shows the repeating MAHLE brand watermark. The document was uploaded to a 1996 Ford Bronco gallery, presumably documenting parts used in an engine rebuild. A reader can learn the exact ring set part number and its cross-references for sourcing an equivalent set, as well as the traceability/serial codes on this specific box. No engine application, bore size, or vehicle fitment details are stated on this visible portion of the label.