Any opinions on TRW control arms? - Page 2 - Mercedes-Benz Forum
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post #11 of 29 (permalink) Old 05-27-2015, 10:26 AM
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Re: Febi LCAs . . .

See post: Spring Clatter - MBWorld.org Forums and Never ending vibration problem - MBWorld.org Forums
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Floobydust: a contemporary term derived from the archaic Latin miscellaneous, whose disputed history probably springs from Greek origins (influenced, of course by Egyptian linguists) - meaning here "a mixed bag." - National Semiconductor Audio Handbook
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post #12 of 29 (permalink) Old 05-27-2015, 11:28 AM Thread Starter
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Quote:
Originally Posted by knapster View Post
ok - I will come clean ...

I just bought control arms from FCP.

The left arm is Febi, the right arm is TRW. Why? Because FCP had the left arm on clearance - $99! (but not the right arm lol). So about $225 for both. And FCP offers lifetime guaranty for their parts - we'll see how that goes.

I will be your guinea pig. If these parts kill me (or worse kill someone else) I will post from the gates of Hell

My expectation for the lifespan of these arms is around 60k to 70k miles. Good or bad, I will post my observations.

The TRW arm was made in Spain btw. The Febi arm, despite the Germany markings, came from parts unknown. The TRW arm appears better in quality to the Febi - but who knows. I'm curious to see their performance.

I understand OP's cost dilemma. Genuine MB arms are $850 for both if you shop around. $850 compared to $225? that's a big difference

Can you see if the boot pops off like on that?

I agree $850 vs $260 for my sunday driver.....
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post #13 of 29 (permalink) Old 05-27-2015, 06:24 PM
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here are pics

TRW on the left and Febi on the right

Any opinions on TRW control arms?-20150527_180640_resized.jpg

Again, TRW on the left and Febi on the right

Any opinions on TRW control arms?-20150527_180735_resized.jpg

I moved the ball joints around on both and saw no problems. As you can see the TRW appears more like genuine than the Febi but that may not mean anything. Both arms weighed 12.8 lbs btw.
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post #14 of 29 (permalink) Old 05-28-2015, 02:45 AM
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TRW brake parts are used by Mercedes for a lot of their cars .
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post #15 of 29 (permalink) Old 05-28-2015, 07:21 AM
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Quote:
Originally Posted by knapster View Post
here are pics

TRW on the left and Febi on the right

Attachment 1457889

Again, TRW on the left and Febi on the right

Attachment 1457897

I moved the ball joints around on both and saw no problems. As you can see the TRW appears more like genuine than the Febi but that may not mean anything. Both arms weighed 12.8 lbs btw.
It's hard to tell from the angle of the picture (and end on view would be better), but it appears that the Febi LCA is equipped with the W201 style bushings. My standard procedure for LCA replacement is to buy the aftermarket LCA and a set of genuine MB W124 bushings (still less money that an all genuine MB LCA). I then remove and throw away the aftermarket bushings and replace them with the genuine MB bushings, properly positioned for the W124. As I said before, I have had no issues with the steel stampings or the ball joints on the TRW or Febi parts. The bushings are always the issue. There is a lot of engineering that went into the bushings on these and they are the key to proper performance in each application. Don't Eff up your car's handling with the wrong bushings.
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Floobydust: a contemporary term derived from the archaic Latin miscellaneous, whose disputed history probably springs from Greek origins (influenced, of course by Egyptian linguists) - meaning here "a mixed bag." - National Semiconductor Audio Handbook

Last edited by Floobydust; 05-28-2015 at 07:25 AM. Reason: typo
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post #16 of 29 (permalink) Old 05-28-2015, 07:32 AM
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Originally Posted by plinker17722 View Post
TRW brake parts are used by Mercedes for a lot of their cars .
MB uses a lot of suppliers, some of which have a so so reputation in the aftermarket. They key difference is that the MB Quality System ensures that the parts meet MB specifications for parts supplied to MB, whereas the specifications and quality requirements for the aftermarket versions of these parts are determined by the supplier. These are often much less stringent than those required by MB.

Floobydust: a contemporary term derived from the archaic Latin miscellaneous, whose disputed history probably springs from Greek origins (influenced, of course by Egyptian linguists) - meaning here "a mixed bag." - National Semiconductor Audio Handbook
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post #17 of 29 (permalink) Old 05-28-2015, 08:09 AM
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Quote:
Originally Posted by knapster View Post
ok - I will come clean ...

I just bought control arms from FCP.

The left arm is Febi, the right arm is TRW. Why? Because FCP had the left arm on clearance - $99! (but not the right arm lol). So about $225 for both. And FCP offers lifetime guaranty for their parts - we'll see how that goes.

I will be your guinea pig. If these parts kill me (or worse kill someone else) I will post from the gates of Hell

My expectation for the lifespan of these arms is around 60k to 70k miles. Good or bad, I will post my observations.

The TRW arm was made in Spain btw. The Febi arm, despite the Germany markings, came from parts unknown. The TRW arm appears better in quality to the Febi - but who knows. I'm curious to see their performance.

I understand OP's cost dilemma. Genuine MB arms are $850 for both if you shop around. $850 compared to $225? that's a big difference
First i would not mix these arms on your car .I would want them of one make only.
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post #18 of 29 (permalink) Old 05-28-2015, 08:40 AM
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@Flo oby

regarding the Febi bushings - I've looked at a lot of images of the w201 bushings and it appears that they have the same orientation markings as the w124 bushings - except for the early w201. The early w201 bushings have the single orientation mark like the Febi's in the photo. So I'm not sure what to say about whether the arms have w201 bushings.

It's not a bad idea to switch out the bushings with genuine (or maybe lemforder for $50). I'm more concerned about the quality of the ball joint than the bushings. I'm going to install both of these arms as they are and share with everyone the outcome so that we all have an update as to the quality of these parts.

Interestingly, Mercedes is not even listed as an application in the Febi website. Perhaps they've stopped manufacturing for Mercedes cars.
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post #19 of 29 (permalink) Old 05-28-2015, 09:51 AM
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Quote:
Originally Posted by knapster View Post
@Flo oby

regarding the Febi bushings - I've looked at a lot of images of the w201 bushings and it appears that they have the same orientation markings as the w124 bushings - except for the early w201. The early w201 bushings have the single orientation mark like the Febi's in the photo. So I'm not sure what to say about whether the arms have w201 bushings.
Yes, they appear to have the early style W201 bushings. I have personally received Febi arms so equipped in the past.

Quote:
Originally Posted by knapster View Post

It's not a bad idea to switch out the bushings with genuine (or maybe lemforder for $50). I'm more concerned about the quality of the ball joint than the bushings. I'm going to install both of these arms as they are and share with everyone the outcome so that we all have an update as to the quality of these parts.
I hope you are experimenting on the 1988CE and not the 1995 E420 - I think it would be a shame to use a V8 car as a guinea pig.

Floobydust: a contemporary term derived from the archaic Latin miscellaneous, whose disputed history probably springs from Greek origins (influenced, of course by Egyptian linguists) - meaning here "a mixed bag." - National Semiconductor Audio Handbook
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post #20 of 29 (permalink) Old 05-28-2015, 11:08 AM
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sorry flooby these are going on the E420. If either or both of these arms are really that bad then I'll take my medicine. I do drive a lot in my cars so I'll know soon enough.

On the bright side I'm expecting new MB tie rods and center link from Mr. Lionel today and they will be installed with the arms.
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