Wright 807191 wrench. Does anyone have info on this wrench? 3/8 dr/ 9/16 opening.
(http://i390.photobucket.com/albums/oo343/snapmom/001_zpsac761c0c.jpg)
Looks like an automotive distributor wrench.
Looks like a distributor nut wrench to me too.
Mike
I don't know how many manufacturers used the same design, but I remember always needing 9/16" on Chevy 350 cubic inch motors. The motors I am referencing had 4 bolt mains, 010 on the block.
Chilly