The MGA With An Attitude
Moss Motors, USA part number 145-200
Moss Motors UK part number 37H6316
Replacement for BMC part numbers:

14B5588 Wheelbox Assembly Thru(c) 80383
17H5388 Spindle and gear Thru(c) 80383
BHA4151 Wheelbox Assembly Com.(c) 80384
AJH5079 Spindle and gear Com.(c) 80384
Used on all MGA 1955-1962

On 17 November 2016, JL Cheatham in Virginia, USA wrote:
"I restored a pair of Rainbow wiper arms. See bottom of page here). -- I had replaced my wheel boxes with new ones from Moss and found that the splines of the new spindles did not match the splines of the Rainbow arms. I ended up restoring my original wheel boxes with new rubber seals from Todd Clarke. The Rainbow splines fit perfectly on the original spindles".

On 18 November 2016, JL Cheatham wrote:
Wiper spindle splines "Here's a picture of the new Moss spindle I bought compared to the original spindle. There are fewer splines on the new Moss Spindle (57) compared to the original spindle (72). Original Rainbow wiper arms will not fit on the Moss spindles".

So, if you want to buy the Moss Motors wiper spindles, you also need to buy the Moss Motors wiper arms and install them as a matched set. For future service, this precludes use of original type parts unless you once again buy both spindles and wiper arms and change them as a matched set. As always when using any non-standard parts you should keep good documentation, and keep in mind that the non-standard parts may not be available later for future service. Replacing the spindles (wheelboxes) is royal pain in a fully assembled car, especially if all you wanted to do was to replace the wiper arms.

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© 2016 Barney Gaylord -- Copyright and reprint information