Hi-Lo Western Breakaway Side Mirror
1 Outside Rear View Mirror Gasket (Upper) 17724
2 Screw(s) N806345-S47 (T30 M6x1.00x20mm)
3 Riv-Nuts N803763-S36
4 Outside Rear View Mirror Gasket (Lower) 17724
5 Outside Rear View Mirror 17682
6 Outside Rear View Mirror Head 17723
A Tighten to 4-12 N-m (35-106 Lb-In)
Aftermarket copies use a common hex-head bolt to attach the mirror post to the arm; OE uses this countersunk bolt. The OE mirror head is a convoluted plastic form with a stainless skin glued on; aftermarket is a hollow stainless shell, which is why they vibrate much more than OE.
See also:
.
.