I have been shopping around to do the upper control arms on my 92. I checked rockauto.com and called the customer service number. I have always been under the impression that the control arms were different between 1st and 2nd gens. I have checked the Raybestos upper arms and they have the same part number for 90-00. Customer service says that is correct and they will work on all years.

So, are they the same or are they different? I am still thinking I am correct even after talking with customer service. Anybody out there with some more knowledge that can point out the difference?

I am very happy with the LBJ from Raybestos and hope those are in fact the right parts for the 1st gen.

part number 502-1200 and 502-1201

http://www.rockauto.com/catalog/more...764&cc=1187478

a quick search from sewell lexus shows:

94 pass side UCA part number: 4861050020
95 pass side UCA part number: 4861059015

like the lower ball joint, it looks like they are NOT the same between 1st and 2nd gen. this does NOT mean it won't fit however.

I am curious, as I do think the quality of Raybestos seems to be the best option. They did say if it doesn't fit I can get a full refund plus the shipping. Maybe I will just have to order one and see what happens. I mean the pictures of the parts look almost identical to me.

they definitely do not cross reference.

Looks like it's down to Moog or Dorman now

why not go OEM? sewell gives a decent discount on the parts, though i understand it's still more than aftermarket but heck it's OEM.

Still pricey and it's a 20 year old car.

of those two, these days, I am taking Dorman

Even with discount I think the OEM is like 490$ or some absurd ish. My doorman fit like a glove and has lasted about 20kmiles so far without issues.

I installed a Raybestos 502-1200 Professional Grade Control Arm and Ball Joint Assembly on my '91 LS400 today. Looked just like OE, and fit perfectly except the castle nut was a little too short (did not line up with the hole in the ball joint stud) so I re-used the old one.

So the fit is confirmed, and I highly recommend the part based on visual inspection. I don't expect any wear problems.

did you do both sides? PN ?

No, just the right side. The left side is still tight. Raybestos PN for the left side is 502-1201. PN again for the right side is 502-1200.