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MG MGA - Wiper wheelbox splined spigot

Have just got a new wiper arm which doesn't fit the spigot which at radius 8mm seems too big. Does anyone know what size the OE wheelbox is ? Has someone fitted MGB wheelboxes on our RHD roadster ?
Thanks in advance
Roger
Roger Walker

with all the complaints with replacement parts the new wiper arm is probably the suspect.
Bob Walker

There was a recent thread - I can't remember if it was here, or on the midget board - where someone kept losing replacement wiper arms, as the splines were wrong.
Dave O'Neill 2

As usual, Barney has it covered, (along with a reference to my far from satisfactory interchange with Tex, the wiper arm manufacturers, for who customer relations and quality control appear to be unimportant).
http://mgaguru.com/mgtech/faulty/ft085.htm
T Aczel

you want BHA4894 for RHD or BHA4893 for LHD. These have the wedge fitting and will stay on original wiper boxes

Unfortunately in my experience the repro wiper box splines have problems even with wedge fittings, so never throw the old ones away
Dominic Clancy

There is nothing really wrong with the main part of the wheel boxes, it's just the splines, and no-one appears to be remanufacturing this alloy part.
Gary Lock

Thanks again everyone - the replacement is going back !
Roger Walker

Gary
I may have a couple for you
Dominic
Dominic Clancy

This thread was discussed between 25/02/2017 and 26/02/2017

MG MGA index

This thread is from the archive. The Live MG MGA BBS is active now.