Engine Rubbers #42A

There are 4 pairs of 'grommets' where the four 1/4" dia. bolts connect to the engine mounts lug pairs at the firewall corners. Their outer edges are looking perished or tired and my Inspector wants them changed.

 

They don't appear in my 1991 spares manual sheet 009-1 & -2. But on my a/c they fit over bolt item 17 clamped between disc washers - item 15, and 3 smaller 1/4" i.d. packer washers - item 16.
I took a pair of rubbers off, they are 1" o.d X 3/4" approx. groove base dia. & the groove is 1/8" wide. the whole washer is 1/4" thick. Got them via Rans USA.