After a bit more digging it seems this may have happened before with ECP and Sachs parts in particular... The label on the box from ECP actually has a number, which when googled comes back as the LESJÖFORS item (still for the E70 with sport suspension). So either ECP are boxing them up as Sachs, or ...

Hi All, I need to replace the front coils springs on the X5 as one of them has snapped :( . I acquired two - both Sachs, however one was NoS (from random online supplier) and one was new (from ECP). However now i have them both the look a bit different, overall length is the same but where the coil ...