I have a 2014 e550 sedan 4matic
I drove a 2016 e400 a few months back and LOVED the floaty ride...but not the laggy throttle and less power. I'm trying to search for the springs from an e400- I'm pretty sure it was not an airmatic and niether is mine.

Thoughts? I'm totally lost in the red mark, violet mark stuff on the spring descriptions.

I would first try looking for a comparable diameter 17 inch rims, and tires. Your E550 has the sport package which rides about .75 inch lower than the Luxury trim on E350/250 IIRC.

Plus if the E400 is lighter up front, you might overly stress the springs. It might not make much of a difference in the long run, but something to think about.

Thank you! I ran across springs described as comfort extra clearance- do you think that is the luxury trim you reference?

I think you need somebody with EPC access to look up all the suspension components part #'s to see if there are any differences between Luxury, and Sport Suspension. Springs, and shocks probably are different part #s IMO.

I think the springs are different between Sport/Luxury, but apparently there are also 3 or so levels of spring pads (which go between the top of the spring and where it sits in the top hat) that would also affect ride height. They should all have different part numbers.