What is the proper plug change interval for an E350 4matic? The guy I bought it from wants almost $500. The car has 60000 miles.

 

Every 60,000/6-years whichever comes first, see attachment.

 

There are several DIY threads on changing the plugs. It's not hard at all.

Get the plugs from FCPEuro as they are having a sale. I just picked up mine from them.
https://www.fcpeuro.com/products/mer...bosch-yr7mpp33

Not sure if those are YOUR plugs, so make sure you change the drop down menu.




EDIT: These are what are popping up for your make/model.
https://www.fcpeuro.com/products/mer...sch-0041598103

Or
Get this kit and you can change the plugs for as long as you own the car:
https://www.fcpeuro.com/products/mer...t-bosch-517012


You'd save $400 doing this yourself....


-Nigel

 

He's got a 276 motor. Different plug, plug tool, and procedure as the plugs need to be clocked in the head, he needs this guy

https://www.fcpeuro.com/products/mer...t-bosch-517012

--Kyle

 

He's in the wrong forum. For 2012, they went to a different engine that used direct injection. I think it's a 60 degree block instead of the 90 in the 272. Anyway for whatever reason, you have to take the intake manifold off in order to change the plugs so it's a lot more complex than the 272 engine. For the 272 engine, they're rather simple, I think mine were done in less than 20 minutes. That engine also went to a multispark system that fires up to 4 times per cycle so that 60k interval is also right.