Part number is 1920-LR. As far as reliability, you ought to do a search here or on google, because he doesn't have many miles on his yet. But it's a very easy install, without needing to set backlash or gear pattern. The box says it's a richmond lock-right. I think it's advertised as a powertrax. It's very quiet, you can turn tight circles without it catching, but floor it and it's definitely locked. Hope this helps.