There are at least two different Koyo/Jtekt bearings available for the front end of the 200 and Tundra chassis vehicles
1 OEM Koyo 43570-60031 and aftermarket equivalent Koyo 2DUF058N-5BR
2 OEM Koyo 43570-0C010 and aftermarket Koyo 2DUF058N-5 or sometimes 5R
The difference between 1 and 2 is in the grease seals. The 5BR has extra seals, whereas the 5/5R does not. These seals are fairly serious, and they not only keep junk out, but the grease in. The latter relies largely on the hub, knuckle, and cv seals to keep contaminants out. It doesn’t really have seals at all on the inboard side of the bearing. Other suffixes seem to exist, but we won’t concern ourselves with them at this point. The short of it is that the Land Cruiser bearing receives a higher grade of sealing when compared to the Tundra bearing.
With all the OEM, aftermarket, reselling, and fakes out there, we need to know what is what in the box we just purchased. The 5/5R bearing is frequently sold as a 5BR. The easy way to tell what bearing you have… If it comes with the internal plastic retainer, which holds the bearing together for transport, you have a 5/5R. The 5BR is held together by the extra seals, so it needs no retainer.