Yep, that's right, mine broke into three when I did the service at the weekend, but handily there is a nice Vx part number. I rang the Stealers there and then - the number wasnt recognised! If anyone's got a APC to hand and is able to confirm this. The reason I mention it is that for all us with - ahem - 'proper' throttles, not dbw type, this could prove a fair old issue, as it's a bit specialist, really. And if yours crumbles then you're a bit stuck unless you have a suitable replacement.
I've contacted a UK company that manufactures every size of grommet, and they have one similar, but not an
exact match. (hoping being rubber that a difference of half a mm isn't going to be an issue) but just for future reference, maybe worth all you on here that regularly break Omegas, to nab the grommet off the throttle cable. It's certainly not the sort of thing I'd ever think about getting, and I must have passed up dozens over the years, same with diff mounts etc...
I'll let you know my 'professional bodge' repair in time, but for now would like to know if there's a source of the correct grommemt/bush?