Description
This upper control arm bolt kit has fine threads. Correct for 63-67.You can use our 68-82 as a replacement with corse thread, which is Corvette Centrals part # 572043..
Set includes 4-7/16-20 x 2 1/8 inch bolts with locking nuts. There is a spline under the head to prevent the bolt turning in the hole – spline diameter = 0.457





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