Front differential question
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Front differential question
Hi, what is the difference on these 4 differentials? I know they all are different part numbers and go to a different cars but its looks the same, got same 3.45 ratio, they fit the same, The only thing i see different is a air vent, other than that i dont see anything different. Any thoughts if they can be interchangeable ?
I got a 08 63amg get lots of metal flakes in my oil. trying to find a low miles diff but all i see is 80k and up but jeep dodge and newer W166 i can get lower miles.
https://www.ebay.com/itm/17-Mercedes...53.m1438.l2649
https://www.ebay.com/itm/2011-2021-J...53.m1438.l2649
https://www.ebay.com/itm/Differentia.../323771136265?
https://www.ebay.com/itm/07-11-Merce...53.m1438.l2649
I got a 08 63amg get lots of metal flakes in my oil. trying to find a low miles diff but all i see is 80k and up but jeep dodge and newer W166 i can get lower miles.
https://www.ebay.com/itm/17-Mercedes...53.m1438.l2649
https://www.ebay.com/itm/2011-2021-J...53.m1438.l2649
https://www.ebay.com/itm/Differentia.../323771136265?
https://www.ebay.com/itm/07-11-Merce...53.m1438.l2649
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Yes its front diff and my vin is 4JGBB77E38A353315
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Yes , i do know i need A1643302702 part # for my car diff. My question was ca i use diff from Jeep Cherokee diff with 3.45 ratio or dodge durango diff with 3.45 ratio or Mercedes ML W166 diff with 3.45 ratio on my car?
They all look the same to me same ratio and same everything. the only difference i see is air vent but that i really dont care about .
They all look the same to me same ratio and same everything. the only difference i see is air vent but that i really dont care about .
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
I got diff from Durango with 12k miles for $200 looks the same, same ratio 3.45 i guess i will learn the hard way. The one for my car was $300 and up and all of them 80k miles and up
My diff is humming, replaced bearings it got quiet for a little but then it started again. drained oil and it was metallic looking again, im thinking its the ring-gear making the noise. That noise is driving me crazy at 45 to 50 mph.
Will update when i get it
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Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Dodge durango front diff fit great works great. Only difference i seen was the air vent thats all car drives just fine.
But the humming noise still there at 45-50 mpg
so disappointing!
Front wheel bearings new
Front diff 12 k miles fresh oil
Transfer case all new bearings fresh oil
Rear driveshaft new support bearing and fresh grease in the joint
Rear bearings checked sound good.
Got 3 more things left.
Front driveshaft. If the joints are too tight would it make the humming noises at certain speeds? how can front driveshaft be checked?
transmission bearings maybe? looks like a lot of them fail on 722.9 tranny but i dont know what the symptoms are for that.
Or rear differential?
This noise driving me insane, sounds like you driving a Jeep wrangler with huge tires with big threads on it but only hear it at 45-50 mpg thats what makes it weird
Any Ideas?
But the humming noise still there at 45-50 mpg
so disappointing!Front wheel bearings new
Front diff 12 k miles fresh oil
Transfer case all new bearings fresh oil
Rear driveshaft new support bearing and fresh grease in the joint
Rear bearings checked sound good.
Got 3 more things left.
Front driveshaft. If the joints are too tight would it make the humming noises at certain speeds? how can front driveshaft be checked?
transmission bearings maybe? looks like a lot of them fail on 722.9 tranny but i dont know what the symptoms are for that.
Or rear differential?
This noise driving me insane, sounds like you driving a Jeep wrangler with huge tires with big threads on it but only hear it at 45-50 mpg thats what makes it weird
Any Ideas?
Last edited by IgorE350; Mar 16, 2021 at 11:08 PM.
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Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Finally found the problem. Decided to swap wheels from my W163 ML55 with Goodyear tires but they're older to my M63 that has brand new 295/45/20 Falken Ziex S-TZ05 114H With about 8k miles on it. my noise at 45-50 mpg gone . My brand new tires that i put on not long a go got me through hell figuring out where the humming noise coming from. Would never think that new tires make a nice car drive like crap. My Ford E-250 cargo van sounds better driving inside than my 63AMG and tires make that difference. i guess you get what you pay for most of the time.
My next step is to try install foam inside my tire, maybe 25mm thick glue it to the tire inside to kill that noise. Definitely not buying another brand new set of tires. i see a lot of people do it for electric cars,
i know Rolls Royce got it inside of the tire to lower the road noise. Any idea what product to use, foam, glue and how would that effect TPMS sensor.
. My brand new tires that i put on not long a go got me through hell figuring out where the humming noise coming from. Would never think that new tires make a nice car drive like crap. My Ford E-250 cargo van sounds better driving inside than my 63AMG and tires make that difference. i guess you get what you pay for most of the time.My next step is to try install foam inside my tire, maybe 25mm thick glue it to the tire inside to kill that noise. Definitely not buying another brand new set of tires. i see a lot of people do it for electric cars,
i know Rolls Royce got it inside of the tire to lower the road noise. Any idea what product to use, foam, glue and how would that effect TPMS sensor.
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Joined: Jun 2002
Posts: 7,258
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
Slightly older thread. Oh the pain! All that work, and it turned out to be tires.
I once had 2 Federal Super Steel 595's on my C230 and it was making a horrible racket.
Yeah, I thought my diff was done.
Fortunately mechanic took a ride with me, and immediately said, it was the tires.
I was spared a hard lesson, and also honest mechanic didn't take advantage of me.
So those Federal Super Steel 595, they last long and grip well, I really liked them in those regards,,
but they went bye bye with the wheels (sold), and I told the buyer beware of these tires.
I once had 2 Federal Super Steel 595's on my C230 and it was making a horrible racket.
Yeah, I thought my diff was done.
Fortunately mechanic took a ride with me, and immediately said, it was the tires.
I was spared a hard lesson, and also honest mechanic didn't take advantage of me.
So those Federal Super Steel 595, they last long and grip well, I really liked them in those regards,,
but they went bye bye with the wheels (sold), and I told the buyer beware of these tires.
