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

Torn air duct (intake arm)

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Old Oct 29, 2018 | 11:08 AM
  #26  
DC-BENZ's Avatar
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GL350 Bluetec and GLS580
And measurable differences in N/A engines.

Originally Posted by chsu74
IAT makes a big difference with turbo engines.
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Old Oct 31, 2018 | 01:21 AM
  #27  
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2013 GL450
I had to replace my driver side one last year. I did the passenger side one a few weeks ago after I got mine back Mercedes from a Turbo replacement. They weren't cheap and I don't have very much confidence on how long they'll last.

S
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Old Nov 2, 2018 | 08:39 AM
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2014 S550, 2013 GL450
I just had both of mine replaces under the factory extended warranty. The right side was showing some signs of deterioration the left was fine. They replaced them both after I told them I know this is a common issue. They also replaced the right from strut because it was leaking and failed.
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Old Nov 2, 2018 | 10:55 AM
  #29  
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Nice - my dealership rejected me on my CPO ELW and I had to pay for mine (bought new ones on eBay). Nice job on the strut too - not sure if my dealer would cover it. My rear shocks are not covered under CPO ELW.
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Old Nov 2, 2018 | 11:20 AM
  #30  
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2014 S550, 2013 GL450
I am lucky. I have a great relationship with my dealer. I have been working with them for over 10 years. I have yet to have anything rejected under warranty.
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Old Feb 8, 2020 | 03:08 PM
  #31  
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Range Rover Sport Supercharged
I was to lazy to uninstall and measure the existing pipes and couplers. I had some left over PTP thermo tape. It is super stiff but also very malleable because it is basically woven steel encased in a heat proof resin. Check it out:


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Old Feb 8, 2020 | 05:49 PM
  #32  
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GL350 Bluetec and GLS580
I wonder if MB uses the felt to help absorb humidity or for some other reason like cooling or air flow?
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Old Feb 12, 2020 | 12:57 PM
  #33  
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Old tread but I got a question: what's the intake hose diameter? Is it 3" or 4" (the side that goes to airbox)?
Many thanks!
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Old Feb 12, 2020 | 05:55 PM
  #34  
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Never mind, it's 3,5"
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Old Apr 6, 2021 | 09:48 PM
  #35  
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2017 GLS450, 2013 GL450, RIP 2011 GL450 (totalled)
I just replaced mine as they were both torn, drivers side worse as it was just about completely severed. I’d rig but it’s always fall back down and I bet intake was getting 50/50 engine bay air vs outside air.

I found similar ducts to the OEM on eBay for $90 (both L+R included). Not sure if it’s mental but the car seems to be shifting much more smoothly, mainly downshifts slowing down and torque converter disengagement feeling when letting off gas is much less clumsy. I read a comment above as well as another M278 forum (I think) that observed a similar outcome.

Doesn’t make any sense mechanically but there you go...
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Old Jun 4, 2021 | 06:25 AM
  #36  
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14 GL 350, 23Chevy Bolt EV and 22 EUV
Just replaced my torn drivers side air intake hose with the Spectre Performance hose. (Amazon, ~$12) . One hose needed per side.
For some reasons, most of the MB parts stores no longer carry the Left side hose replacement.
Removing and replacing not a major problem.
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Old Jun 4, 2021 | 11:10 AM
  #37  
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2015 GL350 Bluetec
Originally Posted by captivabenz
Just replaced my torn drivers side air intake hose with the Spectre Performance hose. (Amazon, ~$12) . One hose needed per side.
For some reasons, most of the MB parts stores no longer carry the Left side hose replacement.
Removing and replacing not a major problem.
I need to replace the left side intake hose on my 2015 GL350. Can you confirm which Spectre Performance hose you used? A link to the page on Amazon would be great.

Jeff
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Old Jun 5, 2021 | 05:52 AM
  #38  
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14 GL 350, 23Chevy Bolt EV and 22 EUV
Spectre Performance Black 3” Air Duct Hose, #8741.
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Old Jun 6, 2021 | 12:25 AM
  #39  
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GL450
Originally Posted by captivabenz
Spectre Performance Black 3” Air Duct Hose, #8741.
BAMM!!
Right there Bro, nailed it!

Chad
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Old Jun 6, 2021 | 12:26 AM
  #40  
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GL450
New car for me, might be an old question. Where is the air filter on my '13 GL450?

Chad
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Old Jun 18, 2021 | 06:43 PM
  #41  
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replaced torn one with brand new one and my mpg went to 22.6 chicago-indianapolis from 20.5
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Old Dec 5, 2021 | 08:54 PM
  #42  
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torn intake lines

so both of mine are torn I upgraded my engine filters yesterday and today I have a check engine light, could this be why the light is on ? haven’t scanned the code yet.
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