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Special way to replace control arms?

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Old Jul 28, 2021 | 08:23 PM
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Default Special way to replace control arms?

Hey guys,

I have a 2014 LS460 Fsport with 43K on the dash. Recently I began to hear clunking sound in the front driver side foot area whenever I braked or made a turn. Went to the mechanic and he said both lower rear control arms bushings are shot. He was able to wiggle them with just one hand. I dont know of any quality replacement parts so opted for oem control arms for $300 each and decided to do both front ball joints for $110 each because one had a torn rubber boot. Okay so I never expected these to go bad so early but my question is - do these have to be installed in a special/specific way so they are installed properly? im going to an indy shop and I stand next to the mechanic when he works on my car.


Part No.: 48670-59025 & Part No.: 48660-59025 For control arms
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Old Jul 29, 2021 | 03:02 AM
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I thought, control arm problem was resolved in 2013+.

Yes, you have to release tension in bushings after installation. One of ways to do it is to tighten your control arms, lower the car. And then drive the car 20-30 feet back and forth. After that drive the car on ramps and loosen the bushing bolts. If there is any tension remaining, you will hear a snap of bushing going in proper position. Tighten the bots and nuts and go for alignment.

Just in case, to remove the lower front forward arms you loosen the nut. To remove the lower front rearward arms you loosen the bolt. In order to get out the bolt. you will have to move the wheel plastic shield out the way.
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Old Jul 29, 2021 | 03:23 AM
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You didn't have to buy new arms, you could have just bought the bushings themselves......
Anyway, to continue with what Anfanger is saying, I thought you also have to have the control arms in their normal operating positions when you tighten the bushings, otherwise they will wear out super fast.
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Old Jul 29, 2021 | 04:05 AM
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Originally Posted by Zetascry
Hey guys,

I have a 2014 LS460 Fsport with 43K on the dash. Recently I began to hear clunking sound in the front driver side foot area whenever I braked or made a turn. Went to the mechanic and he said both lower rear control arms bushings are shot. He was able to wiggle them with just one hand. I dont know of any quality replacement parts so opted for oem control arms for $300 each and decided to do both front ball joints for $110 each because one had a torn rubber boot. Okay so I never expected these to go bad so early but my question is - do these have to be installed in a special/specific way so they are installed properly? im going to an indy shop and I stand next to the mechanic when he works on my car.


Part No.: 48670-59025 & Part No.: 48660-59025 For control arms
Make sure the correct arms are being replaced because the photo/part#'s above are for the lower forward arms.
Be wary of some of the parts sites that have inaccurate description of the part location. This thread may be of help with the part numbers: https://www.clublexus.com/forums/ls-...os-inside.html

Here's a couple of pics of the driver's side (left) from when I replaced all 8 arms this past April. Disregard the ball joint puller, as I used it to remove the rearward arm after I removed the knuckle (with both arms attached) from the car.






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Old Jul 29, 2021 | 06:50 AM
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Originally Posted by Anfanger
I thought, control arm problem was resolved in 2013+.

Yes, you have to release tension in bushings after installation. One of ways to do it is to tighten your control arms, lower the car. And then drive the car 20-30 feet back and forth. After that drive the car on ramps and loosen the bushing bolts. If there is any tension remaining, you will hear a snap of bushing going in proper position. Tighten the bots and nuts and go for alignment.

Just in case, to remove the lower front forward arms you loosen the nut. To remove the lower front rearward arms you loosen the bolt. In order to get out the bolt. you will have to move the wheel plastic shield out the way.
Thats what I thought. This was weird when it happened. I expected no suspension work til 75k the least..

so once installed. I can drive around the block then drive them onto the wheel alignment machine ramps. Then loosen the nuts with a hand tool till I hear a click?

thanks again!
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Old Jul 29, 2021 | 06:52 AM
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Originally Posted by ausLX
You didn't have to buy new arms, you could have just bought the bushings themselves......
Anyway, to continue with what Anfanger is saying, I thought you also have to have the control arms in their normal operating positions when you tighten the bushings, otherwise they will wear out super fast.
i assumed the ball joints for the arms would be worn. I guess I’ll just keep the old arms and replace out with new bushings and ball joints and keep for the future.

Originally Posted by lwphat66
Make sure the correct arms are being replaced because the photo/part#'s above are for the lower forward arms.
Be wary of some of the parts sites that have inaccurate description of the part location. This thread may be of help with the part numbers: https://www.clublexus.com/forums/ls-...os-inside.html

Here's a couple of pics of the driver's side (left) from when I replaced all 8 arms this past April. Disregard the ball joint puller, as I used it to remove the rearward arm after I removed the knuckle (with both arms attached) from the car.




So I used the vin number on my car to match these parts online. My vehicle is an awd so I assume the part numbers are slightly different?
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Old Jul 29, 2021 | 07:13 AM
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Originally Posted by Zetascry
i assumed the ball joints for the arms would be worn. I guess I’ll just keep the old arms and replace out with new bushings and ball joints and keep for the future.
So I used the vin number on my car to match these parts online. My vehicle is an awd so I assume the part numbers are slightly different?
Forgot yours is AWD. Although the part #s are most likely different (definitely the rearward arms as it's a different design) that pic still looks like the forward arms. Maybe use the search function as I recall thread(s) specifically for AWD arms. Easy to see the difference between the two: https://parts.longolexus.com/oem-par...RzJms9MQ%3D%3D

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Old Jul 29, 2021 | 07:15 AM
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Part numbers look correct (front lower rearward) but the picture does not. I am not sure why you paid $300, if you can get OEM ones on Ebay for < $170 per arm shipped to US.

https://www.ebay.com/itm/39276199308...YAAOSw0Mpfg-Uq
https://www.ebay.com/itm/33261056750...QAAOSwTJ1fKgdr

Last edited by Anfanger; Jul 29, 2021 at 07:23 AM.
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Old Jul 29, 2021 | 07:57 AM
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Originally Posted by lwphat66
Forgot yours is AWD. Although the part #s are most likely different (definitely the rearward arms as it's a different design) that pic still looks like the forward arms. Maybe use the search function as I recall thread(s) specifically for AWD arms. Easy to see the difference between the two: https://parts.longolexus.com/oem-par...RzJms9MQ%3D%3D
why are they called forward arms? The link you shared actually looks like the forward arms on my car. The photo I referenced looks like the rear arms as they are behind the strut and closer to rear of the wheel well. Could it be they have different placement for rwd and awd?
Originally Posted by Anfanger
Part numbers look correct (front lower rearward) but the picture does not. I am not sure why you paid $300, if you can get OEM ones on Ebay for < $170 per arm shipped to US.

https://www.ebay.com/itm/39276199308...YAAOSw0Mpfg-Uq
https://www.ebay.com/itm/33261056750...QAAOSwTJ1fKgdr
Im confused now. Idk if they are forward or rearward. They look like the one in the photo I referenced. These actually sit behind the strut, closer to rear of the car inside the wheel well. Hope it’s the right part 😅

I’ve heard of fake “oem” parts on eBay and I actually need them ASAP. I have to drive upstate this weekend and eBay shows delivery date of 1 month lol
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Old Jul 29, 2021 | 08:04 AM
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Yes, those are rearward arms. RWD and AWD front lower rearward arms look similar from a distance. But have a little bit different geometry and the bolt hole in rubber bushing is wider for AWD.

I heard about fakes too but I have encountered only "gray market" parts.

If you need the parts ASAP those guys probably will not work.
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Old Jul 29, 2021 | 12:28 PM
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Originally Posted by Anfanger
Yes, those are rearward arms. RWD and AWD front lower rearward arms look similar from a distance. But have a little bit different geometry and the bolt hole in rubber bushing is wider for AWD.

I heard about fakes too but I have encountered only "gray market" parts.

If you need the parts ASAP those guys probably will not work.
Thanks for confirming . I noticed a lot of members in this forum are mixing up the forward and rearward arms. Or they are in different places as lwphat66 showed them towards front of the strut in his photos.

Idk what gray market parts are lol either they’re real or really good fakes
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Old Jul 29, 2021 | 07:57 PM
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They are real but remanufactured due to some issues. At least, that is how I understand it.
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Old Jul 29, 2021 | 07:58 PM
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What do you guys think about these as a replacement option for bushings?

https://www.armstrongdistributors.com/collections/ls460
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Old Jul 29, 2021 | 08:09 PM
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Terrible. You can get Figs for upper control arms.
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Old Jul 29, 2021 | 08:29 PM
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Seriously? Why are they so terrible?
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