WANTED In search of F41 Rear Trailing Arm Stabilizer Shaft Spacer and Shim

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May 22, 2016
Does anyone have for sale (new or used) or know where I can buy a pair of these? Or just know the part number? They go inside the lower control arms to prevent crushing them when installing a rear anti-sway bar. My El Camino never had a rear bar, so I need to find a set before I can add one. I know I can cut some black iron pipe to make spacers, but I'd rather save that as a last ditch effort.

F41 Rear Trailing Arm Stabilizer Shaft Spacer and Shim



Master Mechanic
Feb 9, 2014
North Jersey
I saw a guy made a set out of strap hinges. Looked pretty easy. I know you said you wanted to buy them but I figured I’d throw that out there.


Sep 14, 2014
Elderton, Pa
Here is the hinge strap ones I made about 25 years ago, just need 4 pieces. A little welding & grinding is all you'll need. I know Tractor Supply has them.


Rocket Powered Basset Hound
Jul 24, 2009
Socialist NY
I have a set with bolts


Comic Book Super Hero
Supporting Member
Jan 2, 2006
Nut- M10x1.5, prevailing torque. GM p/n 11502812
Bolt- M10x1.5x65mm, GM p/n 11508039

These are the cheesiest factory rear sway bar mounting set up pieces I've ever seen. If you're not worried about keeping it stock, bolt in whatever spacer part you put in there to keep it lined up, then tack weld the spacer in place, whether you use GM or gate hinge. Then weld a plate across the bottom of that lower control arm.


May 22, 2016

You guys are great!

Thank you very much for the information (especially the part numbers from 69hurstolds), alternative ideas (pagrunt: I’d have never thought of using hinge straps – that’s the kind of ingenuity I appreciate), and advice (I like the idea of tack welding the braces into the LCAs). All were very helpful.

83StreetMachine had the parts on hand and we completed a deal last night.

Fortunately, this is a temporary solution until I can upgrade to the tubular upper and lower control arms. But there’s some other work I gotta take care of first, though.
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