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1975 Mercedes 450 SL
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33 Posts
Discussion Starter · #1 ·
In 1975 my father bought a 450 SL new from a local dealer. He owned it until his death and in 1992 it passed to my ownership from his estate. I have been maintaining it for almost 30 of its 45 years and it is still in very good condition. Recently a mechanic told me the subframe and engine bushings need to be replaced, and while I was researching the topic I ran across an article detailing the Mercedes campaign for addressing the problem American import 107s had with cracks forming in the subframe. For a time - beginning in the '80s when the problem first appeared - Mercedes would inspect and repair or replace the subframe at no cost to the owner. I am told that program ended 10 years ago.

I called the mechanic to ask if he had noticed any cracks in the subframe: He had not. I called the dealership I use to ask if there had ever been such an inspection or repair on this vehicle. They had trouble looking up the service history, asked me twice for the VIN, put me on hold for a long time and eventually hung up on me. A typical dealer experience, in other words. Lastly I called the dealership parts department to find out if the plates that comprised the subframe repair were still available. Parts told me there was one set left in the country and the dealer would not release them.

So... Here I am: A failure of the subframe at speed could be catastrophic. I can't in good conscience transfer ownership of the car to someone else with this potential defect. My two remaining options are to only drive the car slowly, locally, or commission a third party to design and make the repair. Which brings me to this forum: Has anyone else dealt with this problem and how did you resolve it?

Thanks for your replies.
 

· R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s ALL SOLD
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32,794 Posts
Is your subframe cracked? It is easy to tell if the safety campaign has been done. Have you looked? This is all covered in the EGv107 Sticky. Many members had their subframes reinforced or replaced up until approx. two years ago when the gusset and new '86 subframes went NLA. While supposedly only US models were covered the problem exists in all 107s from '71-'85 and some Euro and 380 models have been covered.
 

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'79 450SL, '04 CLK200 convertible; former A124, W210, A209.
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3,679 Posts
Perhaps your subframe is already repaired and you worry over nothing? Post a pic and we'll advise, as Rowdie said have a look at the sticky and you'll know what to search for.

Also don't worry about those parts being NLA, they can be relocated and a good welder will be able to fix her up if needed.
 

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2011 S212, 1978 R107
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238 Posts
I went through this Saga a couple years ago, short version is that M-B claimed that my subframe had been previously welded, and that they could only replace it, but the parts were NLA, so that was the end of it.

Meanwhile I sourced a set of the metal brackets which were NOT actually NLA, and need to have them welded. I would have the Classic center see they can find you a set. In the alternative you can buy a used 560 subframe for about $800 from ebay and use that, or have someone fabricate a copy of the brackets, they are a very simple design, and weld that up.
 

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2011 S212, 1978 R107
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238 Posts
best thread on the subject

 

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1985 280SL
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272 Posts
I have a subframe from an '86 560SL that is in excellent condition and I also have a set of the repair gussets with original packaging that I bought from a Mercedes dealer a few years ago if you decide you need to repair you subframe. You can PM me and I'll send pictures if interested.
 

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I have a subframe from an '86 560SL that is in excellent condition and I also have a set of the repair gussets with original packaging that I bought from a Mercedes dealer a few years ago if you decide you need to repair you subframe. You can PM me and I'll send pictures if interested.
Hi my subframe is cracked need any help I can get!
 

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1975 Mercedes 450 SL
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33 Posts
Discussion Starter · #9 ·
My apologies for my apparent disregard of this thread: It was not until today that I received any notification of your responses - when Henrysl asked for help. I thought I had opted for notifications.

To summarize: No, the repair was not performed; Mercedes had no idea I now owned the car and I was not notified. My mechanic looked at the subframe and verified it was in good shape but that the repair had not been performed..

I thank Don Shorty for his offer; I will be addressing other repair in the same area of the subframe this spring and the body shop will address this issue at the same time. The gussets should not be difficult to fabricate if they are unavailable NOS.

In the interim I have been going through the vehicle, stem to stern, as I found my German-born, Mercedes-trained mechanic of stellar reputation (and eye-watering fee schedule) had missed some very basic points in working on the vehicle; a leak in the cooling system that caused rust on the frame; one of the two floats in the ATE brake-fluid reservoir missing; the center electrode of the distributor cap eroded - this after a "tune up"! From now on I am my own mechanic.

Thanks again for your replies.

-CH-
 

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I have a subframe from an '86 560SL that is in excellent condition and I also have a set of the repair gussets with original packaging that I bought from a Mercedes dealer a few years ago if you decide you need to repair you subframe. You can PM me and I'll send pictures if interested.
Are either of those items still available? Particularly interested in a good subframe.
 

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1984 380 SL
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139 Posts

· Registered
1975 450SL
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65 Posts
I have a subframe from an '86 560SL that is in excellent condition and I also have a set of the repair gussets with original packaging that I bought from a Mercedes dealer a few years ago if you decide you need to repair you subframe. You can PM me and I'll send pictures if interested.
Hi Don
I’d like to buy your reinforcement brackets if you still have them. I attempted to send you a pm, but I think I’m too new on the forum to do so, but believe you can send me a pm and I can then reply.
Thanks! Robert
 

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59 Posts
I tried to order the gussets from the link above and others on Ebay-UK, they will not ship to USA. Where can I buy these please?

Edit, seller just emailed, he will ship to US, total cost about 112USD
That's about the same that I paid almost 2 yrs ago from an ebay seller from the Netherlands. Then found an older experienced welder at a repair/muffler shop who charged about $90 to weld them in.
 

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1976 450SL, 1992 190e 2.3, 1984 300D turbo, 1966 VW bus
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