My 1993 car had a steering box so had grease nipples on all 4 joints of the steering rods. They had rubber boots. The MOT needed these to be sound but I spotted one had a split. I bought replacements off ebay for a low cost. The joints themselves were good with no wear signs. Not a difficult job to replace them but greasy! The seller on ebay offered various sizes so measurements of the old ones were matched.
I prefer the greasing by the stub axle points as you see what is going on and can spit potential problems at regular intervals.
