These parts are not going to be trailer specific and will instead be tied to the specs on the axles; it looks like this trailer has tandem 3500-lbs axles, so the brakes would be fairly straightforward and you'd want to use the # AKEBRK-35-SA. These brakes are designed to fit in the 10" drums that are typically found on 3500-lbs axles. The rest of the parts, however, you would need to take apart some things and take some measurements.
To replace the bearings you would need to determine... view full answer...