Hey there. I want to replace the 12 plugs in my ML as it is approaching 100k miles.
I was planning on buying Bosch Platinum+2 4301 plugs. I know the orig Bosch plug is FR8DPP33 but I'm wondering if anyone has any experience with the non-original plugs (Platimum+2 or +4). They are only a few dollars more per plug.

Any good places online to purchase them or is it just better to stop in a nearby auto parts store?

Thanks,
Walt

 

Hi, I just changed plugs in my '99 ML320 at 153,000 miles because of misfiring also brand new coil & wires on cyl.1. After reading a lot about the plugs replacement, nobody recommends any other plug just "Blue" Bosch. I was blaming plugs, coils and wires but it was the crank position sensor. I bought set of 12 OEM F8DPP33 on e-bay for $20 including priority shipping. If you not planing on selling it or doing it over soon, I would go with the OEM unless you upgrade and buy the 4501. Good luck!