I took my 2012 ML 350 in for an oil change today and of course they suggested changing out the air filters. For two of part # 49382470, they quoted a "deal" at $300 for each of the two required filters.

I did a quick check online and it looks like I should be able to find them for around $200 each. I'd be grateful if someone could confirm the best places from which to order. Also, are these easy enough to install?

Genuine MB product at FCP Euro $83 for two. Simple DIY with15 minutes installation. Youtube will guide you if needed.

https://www.fcpeuro.com/products/mer...des-2928300000

+1 for what the user BlackML550 suggested (FCP Euro). Rockauto also has them. That's where I get them.

Your link is for cabin filters. I think OP is talking about the engine air filters. They're different.

I think OP is talking about this (Rockauto):

https://www.rockauto.com/en/catalog/...ir+filter,6192

Or this from FCP Euro (scroll down the page):

https://www.fcpeuro.com/Mercedes~Ben...s=air%20filter

OP can confirm though...

ah yes so it was. They're even cheaper compared to the Stealer. Pretty sure the MB service manangers are trained to screw people. $300 is outrageous. Proper link below

https://www.fcpeuro.com/products/mer...ann-2760940004

Yes, thank you. I am referring to the engine air filters. Apologies for not being more clear in my original post.

Also, the guys who did the oil change said there is a sensor on the air filters. What were they talking about? I know these guys so they weren't trying to screw me over (my wife was the one who brought the car in for service).

The air filters on the diesel are a PITA to change, the passenger side in particular. I've found that leaving the screws loosely in the filter cover is helpful in putting things back together; trying to put the screws into a cover that is already set in place was not an easy task.

Are we talking Gas or diesel for this car? Earlier post doesn't specify.

The OP has a 2012 ML350 Bluetec in his avatar lines...

Diesel.