I just bought a 2005 coupe. It's lacking the flat tire air pump. I've searched on Ebay and they are available for a reasonable price, but there are several different part numbers. Generally they're listed using the MB part number: A 000 583 10 02, A 000 583 12 02, A 000 583 15 02. I think the part with "15" in it is for a newer MB, as the pressure gauge is built into the plastic case. Are these really functionally equivalent? Don't any of them fit in the slot under the trunk mat? Don't they all work the same? Are there any differences, other than cosmetic?

(I've read the warnings about using the tire sealant, good to know.)

Thanks in advance.

Avalon