E63 Front Air suspension - Arnott or Bilstein




2 OEM Bilstein front struts (The reason here is that I wanted to retain the OEM ADS functionality that Arnotts does not keep)
2 OEM Bilstein rear shocks
2 Arnott rear air springs (The reason here is that the design is supposedly better than OEM, doesn't impact the ADS functionality, and labor costs are lower to install)
Came out to a little over $2500 shipped




Been driving my G55 a lot lately and walked up to my E63 in the driveway and the driver's front wheel was tucked like something out of stance wars.
Damn near brought a tear to my eye.
Getting these in hopefully before the end of next week so I can install next weekend.
Still haven't installed my sway bar (as I don't want to fork cash over to a shop.... yet) but really hoping that this refresh helps with the jarring thuds I hear on bad roads.
Want to give my E63 some shine and get more seat time.
Will report back after I swap the shock assemblies.




They carry two rear Arnotts with slightly different prices for some reason. SK3199 which is $298.
https://www.rockauto.com/en/moreinfo...788&cc=1422997
Then there is the SK3197 which is $346.
https://www.rockauto.com/en/moreinfo...780&cc=1422997
They both sound like reman according to the description. Odd.
The OEM rear Bilsteins are "Add to cart for price" so you know it's going to be good. https://www.rockauto.com/en/moreinfo...1422997&jsn=13
I assume they are new. They also have a lifetime warranty, through Bilstein. They are only $308 each. FCP Euro has them for $508, EACH. That's crazy.
Similarly, FCP Euro carries the front Bilsteins for $930/ea. Rockauto has them for $607. I'm shocked. I have known for years that Rockauto is great but this is insane. And you get lifetime with Bilstein anyway so I'm not sure what the extra $300 is for! Add it up and you are looking at an extra $1,046 to get the same shocks at FCP Euro. Pass the word!
My guess is FCP Euro is selling them for the Bilstein MSRP. Rockauto shows "Add to cart for price" because they are selling them for under list. Just not sure why FCP Euro can't do the same...especially since the part already carries a lifetime warranty. They shouldn't bear any extra costs there. Oh well, this is why competition is good!
Last edited by kevm14; Jul 17, 2020 at 07:53 AM.
Arnott made a version of the rear bags with red bottoms to cash on in AMG guys, just use the standard 211 version since none of them affect ADS.
Unfortunate to see a fall from grace and you made the right move going with Bilstein.




I also had about 4 beers when I made the purchase to justify no headaches in the future if they go out again.
Can't wait to get these installed and get rid of the insane clunks coming from the front end.


To answer my own question I see now that BILSTEIN 20-070915 retain ads and Mercedes OEM is most likely the same unit.
Last edited by Dokus; Jul 20, 2020 at 11:12 AM.
To answer my own question I see now that BILSTEIN 20-070915 retain ads and Mercedes OEM is most likely the same unit.
Don’t ever bother with AMG specific rear bags, even when buying Arnott.
The Best of Mercedes & AMG




Finally done w the swap. Started at 10a and finished around 5p.
All was fine aside from breaking the upper control arm ball joint when tightening... Lucking Mercedes Benz of Los Angeles had the part.
Came to find out that the driver's side air shock was an Arnott, hence it being blown and the passenger's side was a Continental. FML. pairs people. Pairs!
Got everything swapped did the lowering procedure to allow the airbags to fill up and took the car for a drive.
I have never felt such comfort in my time owning this car. Drives like a dream, no more creaks and metal on metal sounds even on the ****tiest surfaces.
I do have to replace the driver's side lower ball joint as it looks like the boot ripped... does anyone know of a universal boot?
I still have a sway bar to install, but after inspecting the bushings there, it was never the sway bar, it was the air shock. It's been blown all along. Really wishing I did this months ago or even when I first got the car.
While I've owned it, I've replaced every suspension component up front, and have been holding off on the air struts since they are so damn expensive.
You should go Bilstein, FCP Euro or where ever. The car feels like a new purchase. But glad everything I have from FCP is easy to get my lifetime warranty.
Now I don't want to drive my G55 aside from off roading.
Quick tip, when replacing the Bilsteins I decided to just replace the o-rings on the current connectors instead of rebuilding the whole thing.
You need to fish out the additional brass hose seating that comes with the new shock. They are hidden inside the strut tower and not mentioned in the instructions.
Tomorrow I think Im going to go get the car washed and take it for a cruise to get some miles on the new setup.


You mean the balljoint which is pressed into the spindel?
The balljoints are cheap so you just buy a new balljoint and use a handheld press. Thus the spindel can stay on the car. Otherwise, remove spindel and press out.
Handheld press for w211
https://www.ebay.com/itm/For-Mercede...AAAOSwqzFeEpBP
Did you replace just front or also rear bags? If you done rear bags, make sure they sit straight and do not curve. You also need star to set the correct pressure. Otherwise they might blow while driving. The person who did my bags blew total of 4 OEM bags before having to pay the dealer for a correct install.
Last edited by Dokus; Jul 26, 2020 at 07:56 AM.




I have a replacement ball joint that I didn't do to the passenger side. May look at taking the boot off that one and just putting the silicone boot on the one that's bad, to avoid doing a full swap.
I already replaced the one that ripped, it snagged on the spindle when I was getting the shock back in.
Not a bad price on that press though!
Also just did the fronts, the rears ride perfectly.








I have an old thread on this where a careless mechanic installed new rear bags without star. The bags had low pressure and got deformed. Blew a few miles later. Happened twice. Luckily I didn't pay for that.
So it's more of an warning to read up before replacing the rear bags.








The car is a bit higher on both front corners, but the fact that I can walk outside and the driver's wheel isn't practicing for stance wars is a win to me!
I actually like where the cars sits at the moment.
The Bilstein instructions state that you can't put the car on the ground without supporting it.
I have small low profile ramps for the E63, so I used my floor jack to get the tires to rest on the ramps (not full car weight).
Started the car up for 3 minutes.
Used the "Raise" button and heard the air pump activate.
Let that run for another 5min. Then I heard the air bags pressure valve go off, letting me know the bags were full.
Then I let the jack all the way down so the car could support its weight. The air compressor went off for about 15 seconds then the pressure valve went off again.
This let me know the bags were inflated.
Took the misses on a quick drive and to both our surprise all the squeaks and metal on metal thuds were gone.
We have a really bad pot hole near our house in LA that I always swerved around. I took it head on and the car didn't even make a peep.
I still don't drive much in our current climate, and the G55 get's most of the love since it's parked behind the Entrance 63, but hoping to get some miles on her this week.
Interesting about the rears needing the STAR to get proper inflation. But I guess that has to do with the fact that there's no function to engage the pump to auto level.

Finally done w the swap. Started at 10a and finished around 5p.
All was fine aside from breaking the upper control arm ball joint when tightening... Lucking Mercedes Benz of Los Angeles had the part.
Came to find out that the driver's side air shock was an Arnott, hence it being blown and the passenger's side was a Continental. FML. pairs people. Pairs!
Got everything swapped did the lowering procedure to allow the airbags to fill up and took the car for a drive.
I have never felt such comfort in my time owning this car. Drives like a dream, no more creaks and metal on metal sounds even on the ****tiest surfaces.
I do have to replace the driver's side lower ball joint as it looks like the boot ripped... does anyone know of a universal boot?
I still have a sway bar to install, but after inspecting the bushings there, it was never the sway bar, it was the air shock. It's been blown all along. Really wishing I did this months ago or even when I first got the car.
While I've owned it, I've replaced every suspension component up front, and have been holding off on the air struts since they are so damn expensive.
You should go Bilstein, FCP Euro or where ever. The car feels like a new purchase. But glad everything I have from FCP is easy to get my lifetime warranty.
Now I don't want to drive my G55 aside from off roading.
Quick tip, when replacing the Bilsteins I decided to just replace the o-rings on the current connectors instead of rebuilding the whole thing.
You need to fish out the additional brass hose seating that comes with the new shock. They are hidden inside the strut tower and not mentioned in the instructions.
Tomorrow I think Im going to go get the car washed and take it for a cruise to get some miles on the new setup.




Also, yea not a bad idea to have a set handy in the event that things go south, you won't have to wait for delivery and your downtime will just be labor.
Fingers X'd for you



