yes - apologies for the "bum steer" - it could be for the older SL600 (129) 290kW (394ps) at 4bar (58psi) 7.21088.62.0
and not the same spec as the much revered 7.00228.51.0 capable of 72psi = for the later models in the 350+kW (500ps) level of performance
from the pdf I posted in #11 - some numbers to chase for that one...

A 001 470 49 94
...001 470 49 94 (not sure if the missing A means something)

A 001 470 65 94
...001 470 65 94

A 000 470 21 01

...000 478 21 01 (note this also differs from the one before by the 8)