I have a few steering boxes and they are different, all seem to have the same numbers, yet one (68?) also has a number "2" and an "A" in a circle.above the part number (5877849 or 5677649?) the other has a incircled "T" under the part number. i check the spare car also. Oh, the one with the "2" and "A" has writing on the cover. check, fill or something, and the other has numbers. I get back to you guys with more info. jc