GL Class (X166) 2013-2015 after facelift became GLS (X166)

Strut Repair

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Old Mar 3, 2022 | 12:13 PM
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2017 GLS450, 2013 GL450, RIP 2011 GL450 (totalled)
Strut Repair

I'm nearing 130k on all four original air bags. What an improvement from the x164.

As my day is coming, has anyone repaired the front struts vs. replacing them with OEM or Arnott ones? Thought I had seen mention of that on this forum but can't find it.

If so, any details on the repair would be great in preparation.
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Old Mar 3, 2022 | 05:36 PM
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I recently replaced mine. You are living on borrowed time for the fronts. Arnott was out of the ones for my GL so I purchased a new set from another source.
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Old Mar 4, 2022 | 05:15 AM
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I rebuild one a year ago. Bought air bag and swapped it. I had to pull rubber sleeve out to get it cleaned - somehow mine was full of dirt, probably from handling. It was a hassle to put it back in. Probably blowing with air makes it easier.
Anyway works fine, but that won't make your absorbers last longer.
The procedure is straight forward - pull the stop ring on aluminum cover, take it off, unscrew shock nut, replace airbag, put it back together. Might need a through socket.
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Old Mar 4, 2022 | 11:24 AM
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2017 GLS450, 2013 GL450, RIP 2011 GL450 (totalled)
Which brand did you buy?
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Old Mar 4, 2022 | 11:26 AM
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Thanks, so you purchased something like this? https://suncoreindustries.com/produc...lass-w166-x166

So much cheaper than complete replacements.
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Old Mar 4, 2022 | 12:17 PM
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At 130K miles I would replace the shocks too - once you take the whole assembly out, why put back a shock that's likely at the end of its life
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Old Mar 4, 2022 | 12:46 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Shocks on gl is short stroke heavy duty, don't die that easily...
​​​​​​Plus 1k vs 100 dollars meaningful difference...
​​​​​​Anyway - all the brands for bags is used housing with new rubber sleeve pressed on. Doesn't matter.
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Old Apr 1, 2022 | 10:26 AM
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Anyone have luck/experience with RMT on rebuilt OE struts?

Looks like Suncore has poor reviews and Arnotts are expensive.
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Old Apr 2, 2022 | 10:58 AM
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Haven't had experience with them on X166 struts but my experience with them on a 164 strut was not pleasant. Had one of their rebuilt struts fail and they tried to charge me $100 since the part could not be rebuilt. My response was "WTF, you have a lifetime warranty and the fact that it can't be rebuilt is not my problem." So, after some more pointed language and threats to turn them in for, what I thought to be deceptive practices, they waived the $100 but it took around a month for them to ship me a new one. I purchased a new but cheap one off ebay for $100 and had it installed while I was waiting for the RMT unit to come back.

Three years later the $100 airstrut from Ebay was still performing well so I never installed the second RMT unit. It was still in my 164 when it totaled. Would I use them again? Don't think so.

Last edited by BlownV8; Apr 3, 2022 at 10:55 AM.
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Old Apr 3, 2022 | 08:53 AM
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Originally Posted by BlownV8
Haven't had experience with them on X166 struts but my experience with them on a 164 strut was not pleasant. Had one of their rebuilt struts fail and they tried to charge me $100 since the part could not be rebuilt. My response was "WTF, you have a lifetime warranty and the fact that it can't be rebuilt is not my problem." So, after some more pointed language and threats to turn them in for, what I thought to be deceptive practices, they waived the $100 but it took around a month for them to ship me a new one. I purchased a new but cheap one off ebay for $100 and had it installed while I was waiting for the RMT unit to come back.

Three years later the $100 airstrut from Ebay was still performing well so I never installed the second RMT unit. It was still in my when the 164 was totaled. Would I use them again? Don't think so.
I also had a similar bad experience with my Audi and RMT, their shoddy struts and sleazy customer service to the point I had to write the Florida Attorney Generals office and threaten a credit card chargeback.
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Old Apr 3, 2022 | 10:55 AM
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Originally Posted by WillieMack
I also had a similar bad experience with my Audi and RMT, their shoddy struts and sleazy customer service to the point I had to write the Florida Attorney Generals office and threaten a credit card chargeback.
Yes, that's what I said I would do if they tried to stick me with the $100 charge. Many negative posts online that share similar experiences to ours.
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Old Apr 4, 2022 | 02:38 PM
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Dang, may mark them off list!

After Arnott, which replacement/remanufactured brand would everyone recommend?

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Old Apr 6, 2022 | 09:56 PM
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Originally Posted by mcoady1
Dang, may mark them off list!

After Arnott, which replacement/remanufactured brand would everyone recommend?
Don’t gamble on saving a buck on cheap struts. Been there done that. You end up losing more time and money than it’s worth. Pay for new OEM. You already know the quality since they’ve lasted 130k miles. Discounted from MB parts dealers online they’re about $700 each brand new https://www.mbonlineparts.com/v-2014...and-components

Arnott remanufactured are about $550 ish. Why try to save $150 on a strut that’s lesser quality than new while running into the potential of spending more time and money replacing a faulty one, shipping it back, waiting for a replacement, and paying the reinstall labor is not worth it.
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Old Apr 7, 2022 | 09:08 AM
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I have used both rebuilt, new, and really inexpensive struts. My 63's stock struts lasted around 110k miles which is better than the stockers did on my GL450. Arnott's lasted around 150k miles so with that data point they were more reliable than the factory struts. The only ones I had that were not more reliable than the factory units were from RMT and they lasted about as long as the factory struts. As far as rebuilt vs new cost, I wish the price was that close on my 63.

Then again, what do I know. Between my two GL's, the last data point was around 370k miles. Others may have more or different experience so the data may vary. After 15 plus years of GL ownership, would I say that the struts have to be factory new? For me, it is a no. I will do rebuilt or aftermarket new. The only factory part that I've found to be absolutely critical are MB wheel speed sensors since the replacements fail far too often.
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Old Apr 7, 2022 | 09:47 AM
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Originally Posted by BlownV8
I have used both rebuilt, new, and really inexpensive struts. My 63's stock struts lasted around 110k miles which is better than the stockers did on my GL450. Arnott's lasted around 150k miles so with that data point they were more reliable than the factory struts. The only ones I had that were not more reliable than the factory units were from RMT and they lasted about as long as the factory struts. As far as rebuilt vs new cost, I wish the price was that close on my 63.

Then again, what do I know. Between my two GL's, the last data point was around 370k miles. Others may have more or different experience so the data may vary. After 15 plus years of GL ownership, would I say that the struts have to be factory new? For me, it is a no. I will do rebuilt or aftermarket new. The only factory part that I've found to be absolutely critical are MB wheel speed sensors since the replacements fail far too often.
Good point. However the new Arnott struts do not have Active Damping System (ADS) like factory Mercedes strut, only the remanufactured Arnott ones. That would rule out the new Arnotts for me as they have just 1 set value for damping. Went through this same dilemma on my Audi A8 and installed the new Arnotts. They were more floaty and did not ride like factory struts with the Active Damping.

Arnotts remanufactured struts have a good reputation and you like many others have had great success, but it’s also not uncommon for some faulty to slip through the cracks (based on first hand experiences on boards I’ve read) and you have to go through the whole uninstall/return shipping headache (even though their customer service is great).
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Old Apr 7, 2022 | 10:56 AM
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Correct on the new Arnott ADS struts. They do not adjust dampening and only have a resistor as to not induce an error message. Their rebuilt units maintain the ADS. My GL450 didn't have ADS so that was not an issue.

The only return I had with Arnott was pain free. They sent me a new one, returned the old one in the same box, and they paid shipping. It was painless. They don't sell directly to consumers anymore so I have no idea what it will be like with their chosen vendors. Though Arnott was painless, RMT experience was painful. Point is, not all rebuilders are the same so choose wisely.

I did not go factory new with my 63 struts and got them on Ebay for 1/5 the cost of new. The inexpensive replacements, so far, are working great. No one had any rebuilt shocks for my 63 and the factory/Bilstein new ones were around $2.9k for the pair but none were in stock. There was no other option that I could find other than the route I took to avoid excessive downtime. I still have the AMG struts, in my garage, and I will rebuild and reinstall at a later date. Keeping fingers crossed that these hold up. They appear and feel to be high quality and the ride and handling is great.

Last edited by BlownV8; Apr 7, 2022 at 10:59 AM.
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Old Apr 7, 2022 | 11:20 AM
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Originally Posted by BlownV8
Correct on the new Arnott ADS struts. They do not adjust dampening and only have a resistor as to not induce an error message. Their rebuilt units maintain the ADS. My GL450 didn't have ADS so that was not an issue.

The only return I had with Arnott was pain free. They sent me a new one, returned the old one in the same box, and they paid shipping. It was painless. They don't sell directly to consumers anymore so I have no idea what it will be like with their chosen vendors. Though Arnott was painless, RMT experience was painful. Point is, not all rebuilders are the same so choose wisely.

I did not go factory new with my 63 struts and got them on Ebay for 1/5 the cost of new. The inexpensive replacements, so far, are working great. No one had any rebuilt shocks for my 63 and the factory/Bilstein new ones were around $2.9k for the pair but none were in stock. There was no other option that I could find other than the route I took to avoid excessive downtime. I still have the AMG struts, in my garage, and I will rebuild and reinstall at a later date. Keeping fingers crossed that these hold up. They appear and feel to be high quality and the ride and handling is great.
Which inexpensive brand did you go with? Like a random Chinese one or A1 Cardone/similar US equivalent?
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Old Apr 7, 2022 | 12:27 PM
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Originally Posted by BlownV8
Correct on the new Arnott ADS struts. They do not adjust dampening and only have a resistor as to not induce an error message. Their rebuilt units maintain the ADS. My GL450 didn't have ADS so that was not an issue.

The only return I had with Arnott was pain free. They sent me a new one, returned the old one in the same box, and they paid shipping. It was painless. They don't sell directly to consumers anymore so I have no idea what it will be like with their chosen vendors. Though Arnott was painless, RMT experience was painful. Point is, not all rebuilders are the same so choose wisely.

I did not go factory new with my 63 struts and got them on Ebay for 1/5 the cost of new. The inexpensive replacements, so far, are working great. No one had any rebuilt shocks for my 63 and the factory/Bilstein new ones were around $2.9k for the pair but none were in stock. There was no other option that I could find other than the route I took to avoid excessive downtime. I still have the AMG struts, in my garage, and I will rebuild and reinstall at a later date. Keeping fingers crossed that these hold up. They appear and feel to be high quality and the ride and handling is great.

Makes sense. In your case you really had no better option.

I have a 550 with ADS. When they fail hopefully it’s within CPO!
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Old Apr 7, 2022 | 03:51 PM
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Originally Posted by WillieMack
Makes sense. In your case you really had no better option.

I have a 550 with ADS. When they fail hopefully it’s within CPO!
Mine failed 1 month after CPO ended. Just my luck.

Went with ADS units from ShockMasters. They may be Chinese. I'm not sure. Seem to work fine.
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Old Apr 7, 2022 | 05:51 PM
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MERCEDES AMG GT, MERCEDES CLS63 AMG, MERCEDES G63 AMG, MERCEDES CL63 AMG
You can try Bilstein B6! Stable on high speeds! And not boaty
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Old Apr 7, 2022 | 06:32 PM
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Originally Posted by AR_motorwerkz
You can try Bilstein B6! Stable on high speeds! And not boaty
Your signature is seizure inducing. Slow the scroll or fix to one image. That's terrible.
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Old Apr 7, 2022 | 06:42 PM
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MERCEDES AMG GT, MERCEDES CLS63 AMG, MERCEDES G63 AMG, MERCEDES CL63 AMG
Originally Posted by BlownV8
Your signature is seizure inducing. Slow the scroll or fix to one image. That's terrible.
Thanks for your feedback! We'll fix it.
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Old Apr 7, 2022 | 06:47 PM
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Originally Posted by AR_motorwerkz
Thanks for your feedback! We'll fix it.
Thank you and please.
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Old Aug 29, 2023 | 10:21 AM
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Resurrecting an old thread to ask Blown V8 about how the chinese struts have held up after another 1.5 years. Left front strut on my GL63 is gone after 135k miles, first one of the original struts to go. Not sure how much longer I'm keeping it for and would prefer to not pay $1K+ for the OEM one.

Anyone else use Vigor or any other struts from Shockmasters on an X166 and have any thoughts?

Thanks everyone.
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Old Aug 29, 2023 | 01:57 PM
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They held up great.
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