I thought I would surf a little about spark plugs. Just like motor oil. I read so much conflicting information..it made my head spin.
Most say platium is a waste of money. Shoot, I sprung for iriduim my last set. Good for 200,000 miles they claimed.
Bosch offers 3 that work on their Bosch USA Page.
O.E. # F8Dpp332
Platinum2 Part # 4301
Platinum+4 Part #4418

I think I bought the 2's.

THAT IS A +4 pictured Below.

__________________
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