GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Looking for Off Road

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Old Jul 8, 2022 | 11:08 PM
  #26  
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NGL450 w/EORP, S550
The cheapest option will be to find a 450 or 550 with EORP, put good tires on it

and leave it alone.
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Old Jul 9, 2022 | 09:39 AM
  #27  
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GL 350 Bluetec
I think finding a diesel would be a near impossible task, with converting one being extremely complicated.

The gasoline ones do exist out there however still rare.

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Old Jul 9, 2022 | 11:53 AM
  #28  
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From: Yeast Coast, Canada
GL550 X164
And a newly listed Canadian specimen. First 2009 450 I have seen in 3 years of inconsistent looking. In the 2009+ range have been 550s.

http://www.autotrader.ca/go/5-55523119
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Old Jul 9, 2022 | 08:01 PM
  #29  
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NGL450 w/EORP, S550
Originally Posted by Panzerknacker
I think finding a diesel would be a near impossible task, with converting one being extremely complicated.

The gasoline ones do exist out there however still rare.

There’s one - run the VIN and check for the m273 idler gear issue.
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Old Jul 9, 2022 | 09:05 PM
  #30  
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GL 350 Bluetec
Originally Posted by Max Blast
There’s one - run the VIN and check for the m273 idler gear issue.
If only I had the money and the time for a project car, and it wasn’t so far away. Somebody in the Midwest would have a good opportunity here is the link.

https://www.cargurus.com/Cars/invent...333837321/NONE
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Old Jul 10, 2022 | 02:21 AM
  #31  
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NGL450 w/EORP, S550
Originally Posted by Panzerknacker
If only I had the money and the time for a project car, and it wasn’t so far away. Somebody in the Midwest would have a good opportunity here is the link.

https://www.cargurus.com/Cars/invent...333837321/NONE
This one is mine’s twin but it’s LOADED…even has multi contour seats and HEads Up Display.

However; engine number 273923 30 032173 is in affected range for soft idler gear and the low mileage would indicate prior owners dumped it because it’s beginning to manifest itself. You’d have to check for a history of cam magnet codes to verify that’s this is the case. I’ve seen a LOT of ML/GL/Rs with engines in the affected range, low mileage (78-80k) but bad valve train noises. I know I’m contradicting my earlier post to leave well enough alone, but this may be the corner case where you have to tear into the motor.

so this may be the one to bargain hard on and swap a 550 motor into when the m273e47 in there goes boom.

Or that swap to an alphabet deleted OM642 from your ‘08 @jazz1064

Last edited by Max Blast; Jul 10, 2022 at 11:01 AM.
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Old Jul 11, 2022 | 07:32 PM
  #32  
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Originally Posted by Panzerknacker
I think finding a diesel would be a near impossible task, with converting one being extremely complicated.
It is indeed impossible.

Every drivetrain version requires a separate EPA certification, and MBUSA did not incur this expense to certify diesels.
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Old Jul 12, 2022 | 10:11 AM
  #33  
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GL 350 Bluetec
Originally Posted by lkchris
It is indeed impossible.

Every drivetrain version requires a separate EPA certification, and MBUSA did not incur this expense to certify diesels.
Is this true for both X164 and X166?
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Old Jul 14, 2022 | 11:56 AM
  #34  
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It's probably blasphemy to say it here, but I'd consider a Range Rover given how hard it is to find the offroad package for the GL. They offer the same options, I believe, and are much easier to find. The L322s with the 5.0 Jag engine aren't too bad in terms of reliability, especially the 11-12 years. I considered one for a while but it just didn't feel right when I sat in one. I only mention it because they offer these offroad options pretty much standard and are highly capable offroad.
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Old Jul 14, 2022 | 12:43 PM
  #35  
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@Tina Marsh what is the need for the off road package?

Are you familiar with 4ETS? It is MB’s traction control system that simulates locking differentials and is standard on models with 4MATIC since the W210 platform. Therefore 164 has 4ETS.

What is your use case or requirement that is solved by the off road package, and is not solvable by 4ETS?

The off road system has the cool factor but why do you need it? For the cool factor?
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Old Jul 14, 2022 | 02:16 PM
  #36  
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2007 GL450
Originally Posted by chassis
@Tina Marsh what is the need for the off road package?

Are you familiar with 4ETS? It is MB’s traction control system that simulates locking differentials and is standard on models with 4MATIC since the W210 platform. Therefore 164 has 4ETS.

What is your use case or requirement that is solved by the off road package, and is not solvable by 4ETS?

The off road system has the cool factor but why do you need it? For the cool factor?
Very good point. Lockers offer some but not much improvement over traction control.

The EORP also introduces mechanical complexity, which is something you want to avoid when doing any serious off-roading. The air springs, which are terrific for the extra 3" ground clearance, are an example of problematic complexity. Coil springs simply do not fail; in the air system there are seven components, any one of which can cripple upon failure. More if you count all the air lines snaking around.

I will also add: The low range offered with EORP is only useful if your tires have enough grip to make use of the added torque at the wheel. You simply cannot get very big tires on the GL; you probably could push the width up from stock by a bit, but the baseline best off-road tire is a 265 width. Jeeps have a similar base tire size, but some go crawling around look like they are sitting on balloons in comparison - and the GL is easily a half ton heavier.
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Old Jul 14, 2022 | 05:46 PM
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NGL450 w/EORP, S550
@Tina Marsh peaced out of this thread last year.

My EORP specific components are factory at 217k with only major slop noted in the transfer case chain. No degradation in overall reliability vice a non-EORP.
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Old Aug 8, 2022 | 10:52 PM
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GL 350 Bluetec
Reviving an old thread once again but here is a 2013 gl550 with the package.

https://www.cargurus.com/Cars/invent...333526722/NONE
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Old Oct 12, 2025 | 11:10 PM
  #39  
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GL450, GLE350 E350, E450
I have a 2016 GL450 with the On & Off-Road Package. It is a true off road beast. I live in Colorado and have many miles in 4 Low. As a reference point, I have owned a 1975 Ford Bronco and dirt bikes for most of my life. I bought my GL not knowing about the On & Off-Road Package. I thought the sales woman didn't know what she was talking about. Actually, she knew her ****. I drove off the lot in 4 Low after she demonstrated it to me in the parking lot after the test drive. In most cases, on "Jeep Roads" you can get by without the lockers, steel skid plates and other features. So yes, a regular GL is capable. However, the Off-Road package adds even more capability. I don't plan to ever sell mine.
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