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Lower Control Arm Eccentric Bolts/Plates

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Old Oct 3, 2025 | 12:54 PM
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Default Lower Control Arm Eccentric Bolts/Plates

Went to align my car today and it appears that a prior tech absolutely mangled one of my front eccentrics, somehow threading the bolt right through the plate, and I am going to go ahead and replace them all with OEM in the off season. I just wanted to confirm - are all 8 eccentric bolts/plates the same and interchangeable? I found P/N 11611443 for the bolts and 11611444 for the plates, but half of the websites state that they are for rear. Before I order I want to make sure they are correct for the fronts as well.

Thanks in advance!

Last edited by 4GS7; Oct 3, 2025 at 05:03 PM.
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Old Oct 4, 2025 | 01:23 AM
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Originally Posted by 4GS7
Went to align my car today and it appears that a prior tech absolutely mangled one of my front eccentrics, somehow threading the bolt right through the plate, and I am going to go ahead and replace them all with OEM in the off season. I just wanted to confirm - are all 8 eccentric bolts/plates the same and interchangeable? I found P/N 11611443 for the bolts and 11611444 for the plates, but half of the websites state that they are for rear. Before I order I want to make sure they are correct for the fronts as well.

Thanks in advance!
You will also want to replace the nut. P/N 11516382. I believe the parts are the same at all 8 locations. When replacing the front mounting bolts on the rear control arms, you will have to cut the old bolts to remove them and then insert the new bolts with the bolt head located on the rear side of the control arm's front mounting point. These parts are best ordered from your local dealer. Visit their parts department and have the parts counterperson look up the exact parts required for your vehicle's VIN. Then see if they can grant you a discount when ordering the parts. My local dealer's parts department offers prices that are quite close to the online prices. You don't have to pay shipping if you order from the dealer, as the shipping is included in the cost of the part.

Bill
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Old Oct 4, 2025 | 10:45 PM
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Originally Posted by Bill Dearborn
You will also want to replace the nut. P/N 11516382. I believe the parts are the same at all 8 locations. When replacing the front mounting bolts on the rear control arms, you will have to cut the old bolts to remove them and then insert the new bolts with the bolt head located on the rear side of the control arm's front mounting point. These parts are best ordered from your local dealer. Visit their parts department and have the parts counterperson look up the exact parts required for your vehicle's VIN. Then see if they can grant you a discount when ordering the parts. My local dealer's parts department offers prices that are quite close to the online prices. You don't have to pay shipping if you order from the dealer, as the shipping is included in the cost of the part.

Bill
Also the slot in the cradle is damaged, so I guess I'll be replacing the whole engine cradle, and, as long as I'm in there, might as well do the monoballs that I've always wanted and the Hinson motor mounts. Sigh.
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Old Oct 5, 2025 | 06:01 PM
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Originally Posted by 4GS7
Also the slot in the cradle is damaged, so I guess I'll be replacing the whole engine cradle, and, as long as I'm in there, might as well do the monoballs that I've always wanted and the Hinson motor mounts. Sigh.
There should be two slots in the cradle for each bolt. One is on the rear of the cradle control am mount and the other is on the front of the mount. The bolts have two eccentrics with one fitting in each slot. Depending on how badly damaged the slot you are looking at is, the eccentrics may still hold when torqued to the proper value.

Bill
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Old Oct 6, 2025 | 09:35 AM
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This is a good time to upgrade to AMT's octagonal (?) eccentrics.
C7 Corvette Adjustable Camber Kit | AMT Motorsport - AMT Motorsport
You get close w/ the eccentrics and fine tune w/ the shims. A nice part of this is they have a chart that tells you how much the camber will change for each shim thickness.
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Old Oct 6, 2025 | 12:16 PM
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Originally Posted by CraigStu
This is a good time to upgrade to AMT's octagonal (?) eccentrics.
C7 Corvette Adjustable Camber Kit | AMT Motorsport - AMT Motorsport
You get close w/ the eccentrics and fine tune w/ the shims. A nice part of this is they have a chart that tells you how much the camber will change for each shim thickness.

....and the alignment will never move again. Good stuff. To the OP.....if you go this route, you get what you pay for. There are cheaper knock-offs but with much poorer quality.



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