Idler Arm to frame hardware - Impala Tech
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post #1 of 2 (permalink) Old 03-29-2016, 10:46 PM Thread Starter
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Join Date: Aug 2011
Location: Western Washington
Posts: 147
Idler Arm to frame hardware

Does anyone know the correct bolt size for the idler arm bolts to mount to the frame for the fullsize 1967 Impala sedan. I seemed to have misplaced them and need to get a new set while finishing up the front end suspension and steering. I have the number 186682 from the manual but that number seems defunct in interweb searches.

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post #2 of 2 (permalink) Old 03-29-2016, 11:07 PM
Join Date: Jan 2006
Posts: 12,488
Probably going to be a 3/8-16 inch and a half or so long (thick enough to go through the idler arm, frame nut and have an eighth of an inch or so remaining) with a crimped nut on the other side, grade eight. It may be a 7/16th bolt and nut; but I would try the three eighths bolt's fitment first. It should be tight. It will be a grade eight not a grade five to prevent shear.

Big Dave
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