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Propshaft Flexible Couplings (Donuts)

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Old 04-16-2013, 05:59 AM
Steve - UK's Avatar
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Default Propshaft Flexible Couplings (Donuts)

"A two-piece driveshaft links the transmission and rear axle through two flexible disks and one universal joint to
minimize driveline vibrations"

Ive just done some research having noticed some slight cracking in the rubber Flexible Coupling Disk (or donut) at the rear end of the propshaft. The front coupling is fine probably because it runs in - line where as the rear one takes some more flexing. Having checked out the MB info on this it seems that some SLK's have had failures of the part with catastrophic results so worth checking and changing if any signs of cracking. Some of our friends in USA have had to change these on the Xfire. This can be due to age/mileage or too much hard acceleration. It seems that while the standard SLK or standard Xfire can have this issue, the AMG/SRT versions eat these couplings for breakfast. I would recomend inspection and replacement if any signs of cracking around the bolt heads, especially if the miles are creeping up, and even more so on SRT models as mine has done only 33K and last only owner was a lady! The MB part numbers are different for standard SLK/Xfire and AMG/SRT as the more powerfull car has version which is much more beefed up. AMG version for SRT is part number 203 410 0215 79.00+Vat from your local MB dealer.
 

Last edited by Steve - UK; 04-17-2013 at 05:06 AM. Reason: clarification
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Old 04-16-2013, 06:44 AM
UK ken's Avatar
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Default Re: Propshaft Flexible Couplings (Donuts)

Originally Posted by Steve - UK View Post
Ive just done some research having noticed some slight cracking in the rubber Flexible Coupling (or donut) at the rear end of the propshaft. The front coupling is fine probably because it runs in - line where as the rear one takes some more flexing as the rear supension moves. Having checked out the MB info on this it seems that some SLK's have had failures of the part with catastrophic results so worth checking and changing if any signs of cracking. This can be due to age/mileage or lots of hard acceleration. It seems that while the standard SLK can have this issue, the AMG versions eat these couplings for breakfast. I would recomend inspection and replacement if any signs, especially if the miles are creeping up, and even more so on SRT models as mine has done 33K and last only owner was a lady! The MB part numbers are different for standard SLK and AMG as the more powerfull car version is much more beefed up. AMG version is part number 203 410 0215 79.00+Vat from your local MB dealer.


First time I've seen this info re xfire pending trouble.

A big thanks Steve....my round next time we meet.

UKKen.
 
  #3 (permalink)  
Old 04-16-2013, 08:27 AM
Join Date: Jul 2012
Location: SW Scotland UK
Age: 58
Posts: 269
Default Re: Propshaft Flexible Couplings (Donuts)

Originally Posted by Steve - UK View Post
Ive just done some research having noticed some slight cracking in the rubber Flexible Coupling (or donut) at the rear end of the propshaft. The front coupling is fine probably because it runs in - line where as the rear one takes some more flexing as the rear supension moves. Having checked out the MB info on this it seems that some SLK's have had failures of the part with catastrophic results so worth checking and changing if any signs of cracking. This can be due to age/mileage or lots of hard acceleration. It seems that while the standard SLK can have this issue, the AMG versions eat these couplings for breakfast. I would recomend inspection and replacement if any signs, especially if the miles are creeping up, and even more so on SRT models as mine has done 33K and last only owner was a lady! The MB part numbers are different for standard SLK and AMG as the more powerfull car version is much more beefed up. AMG version is part number 203 410 0215 79.00+Vat from your local MB dealer.
Well spotted Steve - great that you've brought this to our attention.
My car's just on 30k with next service due in 2k so will be checking this out v. soon.
Thanks again!
 
  #4 (permalink)  
Old 11-02-2018, 07:42 AM
Join Date: Nov 2014
Location: United Kingdom
Posts: 4
Default Re: Propshaft Flexible Couplings (Donuts)

Mercedes Part Numbers for NON SRT

Propshaft Centre Bearing - A008 981 4325
Propshaft Centre Bearing Mount/Support - A170 410 0081
Propshaft Donut/Coupling - A000 411 0000 (front and rear are the same part)

Febi Bilstein versions are readily available at places like onlinecarparts.co.uk and relatively inexpensive.

Chrysler will want you to but a whole propshaft for almost 1,500
 
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