Trying to replace the lower front stabilizer shaft bushing on my 1993 coupe and ordered the bushing through my local GM dealership. The GM parts diagram lists the upper (part #21) and lower insulator (part #49) as part # 14084097 for both. I believe they should be different as the upper is "beveled" to press into the stabilizer bar end, and the lower that fits into the lower control arm should be different. Can someone please shed some light and advise if this is correct. Thanks in advance!

Bryan

 

12521520 is the correct part # for the lower but it's been NLA for quite some time. You might try the numbers that he sold you but I don't recall them being the same 'dimensionally', I've never measured but the through bolts upper and lower are the same I'm quite sure.

 

tried it and it does not fit.... it is slightly larger. Any recommendation on where i can get the correct one. And why would the GM parts diagram list them incorrectly. Checked tonkin GM parts and they list both as an"upper"....

 

Dimensionally what is the difference? Could the LCA be 'reamed' for the upper to fit? I understand the desire to use OE metal clad replacements so I'd maybe consider that.

If the dealer has the bushings for the rear measure those maybe for comparison's sake. That number is 14060114.

 

The OD is larger on the lower than the upper and i really dont want to mess with the lower control arm. I personally like the metal clad bushings but may try a set of Poly bushings from Ecklers. What do you think? Are they any good, and can anyone reccomend another source.

 

Okay, this post is 10 years old, but the car issues remain relevant as long as they are on the road.

I asked basically the same question a couple days ago but got almost nowhere. I also want to replace the upper and lower stabilizer bushings and am looking to the supply vendors for clarification. I'm finding they are basically clueless.

I do know the lowers are sleeved using a smooth metal case pressed in until the collar hits. The original uppers are segmented to indicate the depth they are pushed into the sway bar (13mm). Rubber is the oem material. Lots of vendors say the bushings they sell are "rubber" as well as the large sway bar to frame bushings, calling them "rubber". I got a couple "rubber" bushings from Ramcoa, but they certainly look and feel like polyethylene.

To the point of the original post; I have measured the upper an lower stabilizer bushings while in place and found them to be identical dimensionally. This is opposed to the original poster. With 17k miles, I have to assume my components are oem. I will pull both to make a final comparison and report. If the same, we should be good to go with a single part number instead of wrestling with the separate numbers.

I guess this only appeals to those replacing front sway bar components.

 

I hate to raise a post from the dead but I'm wondering if you got anywhere with this? I'm in the process of rebuilding the front end and I have all bushes ready to go, but this one!