https://www.amazon.com/dp/B008YEM5UC/ref=cm_sw_r_cp_apa_i_Y0GuFb3VEMJE4
I ordered that and it arrived yesterday. I hope it's the right part. I am decently mechanically inclined, but I've never messed with small engines or Go-Karts before. In fact, until last week, I didn't even know there was such a thing as a clutch for a small engine. Fingers crossed that I can swap this out correctly, and that it's the right part.