A surprisingly complicated subject, mainly due to the fastenings changing every 5 minutes. Some part numbers have been changed from those listed in the parts books with equivalent parts, in order to simplify the listing. The original number, from the parts book, or those listed here can be used, in any case the same part will be supplied. You are welcome to order a part by saying ‘centre stay and all fastenings’ etc. and we will work what you need. Not all parts are available but we have plans to rectify that.
It would appear that BSA used the part number 67-6543 for 2 similar mudguards so they have been given suffix ‘A’ and ‘B’ to distinguish them. 67-6543A has a rib, side skirts and a pressed area for the number plate; used on plunger models. 67-6543B does not have a rib or a pressed number plate area and is made from one pressing.