Thanks vti. I realized it was a weekday (i'm off work this week) so e down to Gengras Volvo and got the OEM ring. I measure the id to 0.307 a 302 pin is loose and a 5/16 pin is just a tad over. The width is 0.072 so the size they gave me is a -011. (5/16 ID by 7/16 OD 1/16 Wide) That size is include...