Don't have a part number, but just replace my brakes 6 months ago and my brakes came with new clips. If you just need a new clip and are not replacing pads, try a brake shop, they are a pretty common clip style.
When i bought my calipers new, they came with two clips but different sizes. Are there supposed to be two different sized clips? The bigger of the two was the one that fit, but i couldn't get the smaller one to fit on there.
Although in this pic, it looks like two different sized clips.
I am pretty sure that both of my clips were the same size. I am taking my wheel of tonight, to fit some new wheels and I will check again. I had problems with my clips, turns out I was putting them on backwards. What is even more funny is that is how they were or there to begin with. I took it to a friend at a good brake shop and he showed me what was wrong, I was was having a problem with the pad clamping properly. All fixed now.