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Suspension Part #s - 07 S600 - Stealership Won’t Share!
Hey all,
Can anyone confirm the part #s for both front rearward control arms?
Ive been on a rollercoaster ride with sourcing the correct parts. I ordered them from FCPEURO first and I was sent Lemforder OEMs which appeared to fit but were slightly off.
I slapped myself on the hand and said “That’s what you get for trying to save money!”
I then purchased directly from the stealership and again the part doesn’t fit!!! Wtf
part# from FCPEURO and MBParts USA (ordered online and picked up at local dealership):
221-330-8707
221-330-780780
The stealership says it’s the right part🤣🤣🤣 and one of the parts guys claimed that the fitment issue is related to my S600 NOT being 4-Matic??? Wtf😂
Im no expert but does a V12 S600 4 matic exist? Anyway…
Here’s my indy holding the original next to the new:
Anyone with access to genuine part#s pleas help!!!!
thanks so much in advance!
Last edited by V12mrinc; Dec 15, 2021 at 08:36 PM.
Normally you'd post your vin and someone with EPC access or ISPPI will be able to look it up. You can get a knock off copy of the EPC/WIS on eBay in the $10 range. Or post your vin and someone should be able to look it up. But that's what the dealers normally do, go by your vin number.
It does appear to me that the new arms you have are for AWD cars....the RWD requires that bend in the middle like your original part and the ones I linked above. Just based on Rockauto research...
Looks to me like AWD wasn't added until the W223 but again, quick research....
7807 is 4matic correct part #s are left 2213308707, right 2213308807.
First and foremost, thank you so much for the thorough information!!!
This is a real head scratcher because as you see here:
See the part # but did not fit at the center hole where strut connects. The hole diameter was too large.
This is why I’m so confused.
As mentioned, I had the exact same issue with the Lemforder set from FCPEURO (same part # see below):
This is the Lemforder same part # which I sent back to FCPEURO believing they sent me the wrong part. The stealership part fit exactly the same. The center hole where strut connects way too much play for bolt to tighten
This is why I’m at a loss and quite confused!
I figured I was being punished by the V12 gods for going cheaper on suspension parts on this beast hence the FCPEuro failure, but when the purchase directly from MB had me in the same spot I was thinking I may owe FCPEURO an apology.
On both the Lemforder and MB arms the issue is there seems to be a missing rubber bushing for that center connecting point allowing the strut screw to sit securely.
Being that no such bushing is on the original arm, again I’m completely baffled by this!
I even tried to talk my indy into placing a large washer and trying to tighten and he blatantly refused 😂I said to myself “He just passed my shady mechanic test!”
It does appear to me that the new arms you have are for AWD cars....the RWD requires that bend in the middle like your original part and the ones I linked above. Just based on Rockauto research...
Looks to me like AWD wasn't added until the W223 but again, quick research....
Yes you are right!!!
I did take a look at these two you linked as well as one by Moog which I’ve read mixed reviews. Apparently any part from them beginning in “RK” are cheap knockoff reboxed as Moog products and are a serious safety concern.
That being said, I love RockAuto and I definitely think there are some viable options but my biggest concern is the fact that the part # 221-330-8707 directly from the stealership didn’t fit and neither did the same part from FCPEuro.
I guess I could give one of the RockAuto parts a try but it appears all part#s are the same #221-330-8707.
Hoping to solve this mystery soon as I’d like to get the beast fully winter ready!
Normally you'd post your vin and someone with EPC access or ISPPI will be able to look it up. You can get a knock off copy of the EPC/WIS on eBay in the $10 range. Or post your vin and someone should be able to look it up. But that's what the dealers normally do, go by your vin number.
Thanks for the insight on the WIS on eBay! Had no idea
Is there a missing bushing or something on the bottom of your strut? I don't think the V12 uses different arms. It's just RWD vs 4Matic.
That’s the million dollar question…”Is there something missing from the original strut?”
The only reason I’d venture to think there’s no “bushing or something on the bottom of the strut” missing is:
1) It’s unlikely that both sides would be missing
2) They definitely appear to be original equipment
3) The connecting hole on the new part is clearly much larger in diameter than the original.
Im definitely open to all suggestions though and looking at all possible explanations for this!
What's the difference here? One says "with bushing" and the other doesn't....one is painted. Maybe there is a difference between ABC and Airmatic arms then. Wait, that can't be as all S600s had ABC. So it must be some kind of design change....I still don't really see what the difference is. Rockauto shows both as applying to 07-13. Though the 2213308707 part says
What's the difference here? One says "with bushing" and the other doesn't....one is painted. Maybe there is a difference between ABC and Airmatic arms then. Wait, that can't be as all S600s had ABC. So it must be some kind of design change....I still don't really see what the difference is. Rockauto shows both as applying to 07-13. Though the 2213308707 part says
And the 2213307107 part says
Not that I put a ton of stock in this for cars like this...just poking around.
I share your confusion in regards to the subtle differences in description yet both part #s show fitment compatibility with an 2007 S600 but as I’ve shown above part # ending in 8707 definitely does NOT fit.
I do see the #…7107 part and I’m not sure if it’s a visual placebo effect but it actually appears more like the original arm at the bend at the strut connecting point.
I did notice in the above attachment with my VIN the vehicle type was noted as “S600, S 600 Guard L” I was wondering if this had anything to do with the difference in part# (i.e. S600 uses part 8707 vs S600 Guard L uses 7107)
As you can see I’m still attempting to get theses arms done!
Here’s the weird thing about the part # casted on the control arm (see here):
on the new part the #s 221 26 19 are clearly visible however that part # if searched seems to be a different arm altogether.
Also, as you see here:
This right side arm part # is 221-330-78-07-80 based on the MB box.
So just trying to solve this mystery.
This is so weird as the part from MB does not fit either. This brings the next question: if you were to replace the struts, what would the bottom mount of those look like?
The horror scenario here is that MB changed the design and made the parts that your car was built with obsolete meaning that if you change either the arm or the strut you need to replace both.
This is so weird as the part from MB does not fit either. This brings the next question: if you were to replace the struts, what would the bottom mount of those look like?
The horror scenario here is that MB changed the design and made the parts that your car was built with obsolete meaning that if you change either the arm or the strut you need to replace both.
Thats exactly what I was thinking Arrie. I’m waiting to see if anyone chimes in to hopefully add a perspective that may shed more light on this odd situation.
I have the 2 arms proposed above (#s ending in 7207) in the shopping cart from RockAuto but just holding off to see if any breakthroughs/developments occur here on the forum.
Both original arms are completely silent and have no significant play but I want this done now just for peace of mind.
So I’ll give it a bit but if no new ideas are shared I’m going to order the other arms and cross my fingers 😂
The bottom of your strut looks very interesting. Not like the "normal" ABC struts I've seen.
Do you mind sharing the part number of your strut?
I am yet to understand the difference between the struts I've seen. (WIS makes mention of different torques depending on the size of the nut to the strut which is why I know there are at least two different types of bottom joint in these ABC struts)
The bottom of your strut looks very interesting. Not like the "normal" ABC struts I've seen.
Do you mind sharing the part number of your strut?
I am yet to understand the difference between the struts I've seen. (WIS makes mention of different torques depending on the size of the nut to the strut which is why I know there are at least two different types of bottom joint in these ABC struts)
No problem at all! So I’m not certain of the part # but I just went and took some photos of the strut from various angles, perhaps that will help!
see photos here:
Barcode on strut Backside where strut connects to thrust arm Another angle of connecting point where strut meet arm “5. L5” in yellow on strut
This is so weird as the part from MB does not fit either. This brings the next question: if you were to replace the struts, what would the bottom mount of those look like?
The horror scenario here is that MB changed the design and made the parts that your car was built with obsolete meaning that if you change either the arm or the strut you need to replace both.
hey Arrie,
I was just taking some photos of the strut and wanted to show you the #s casted on the original arm- see here:
The new arm which ended up being the wrong fitment had a similar # format casted on it that is totally different from the “part #” see here:
221-26-19
What’s even more interesting is if you search this 7-digit number the arm that populates in general internet search findings appears to be slightly different than this one!
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