RWD v AWD LS 460 front upper control arms

[jfkova]

Much confusion about so many LS 460 control arms. I want to know if a control arm part number 48630-59135 (Front, Upper Rearward arm for a 2009 LS 460 RWD) will fit for a part number 48630-59145 (F, Upper Rearward arm on a 2009, LS 460 AWD).  Simple question will the 2009 LS 460 RWD control arm part work on a 2009 LS 460 AWD?

[RX400h]

If no one answers here, you may consider asking your dealership's parts department person who can verify whether part numbers are the same.

....or is that where the confusion started?😏

[jfkova]

I can find the part 48630-59135 (Front, Upper Rearward arm for a 2009 LS 460 RWD) in the aftermarket online stores but not the rated for AWD.  The dealership is my last resort.

[jfkova]

My dealership says its a different number so there must be something different about it.  Obviously it's a different number, but that does not answer the question, can it be used on AWD?  And why can I not find one (Front, Upper Rearward arm on a 2009, LS 460 AWD) in the aftermarket?

[RX400h]

I'd tend to ask myself, if the part does fit, what other reason would Lexus have for not using the same part/part number in both applications?

[jfkova]

Excellent question, I don't have an answer.  But why not any Upper Rearward AWD to be found in the aftermarket online stores?  For example Beck/Arnley offers eight of the front eight control arms labeled for RWD and a Lower Rearward for AWD but none listed specifically for Upper Rearward AWD.  Aftermarket is $90 while Lexus parts department is $470.  I was thinking maybe a catalog omission and the RWD is the same part as the AWD?  

[RX400h]

I wonder if the parts department person can tell by looking at the drawings of the two parts. It is a mystery; that's for certain!