yes my Bosch --they look like those.

There are many numbers on plugs.
My Manual reads F 8DPP332
Spark Plug searches show #4418 for Platium 4
#4301 for Platium 2

NAPA SHOWS 17 choices of Spark Plugs for the ML320.

update- finally installed them. I took my time - it took me 2 hours. I didnt do anything with a floor jack, removing fender liner, heat shield. just took of the air cleaner top and coils to gain prying room. Platinum II's.

DEC 7th 2006 Update. with only a few thousand miles on my truck it started missing. Codes said multi missfires. replaces the MAS still ran bad. The Auto zone guy said codes usually mean spark plugs..since it was for diagnostics. ..i put in copper champion. it ran better. idled bad yet. Took to dealer. he said i had a vacuum line problem...rerouted a vacuum line for $80 and cleared the codes. so far so good.

__________________
Steve Danville
what i did myself.
CPS
rear shocks
MAS x 3.
SparkPlugs (twice)
Fuel pump & Filter
Window switch
replaced both failed horns with Honda horns.
Cleaned ERG Tube
Oil changes
Oil consumption Fix
Brake Pads
A/C Recharge
Anti-Freeze change X 2.
Front Shocks. Monroe. $90
Mercedes Warrenty Work:
Harmonic balancer,power steering clamp. Cat converters.Drive Shaft Bearing.s
Replaced Outer Lower Tie Rods and front lower ball joints at 156,000 miles