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gtogreen1969
 Post subject: Rear Brake Drum AYA4020
PostPosted: Mon Apr 13, 2015 8:57 pm 
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Does anyone recognise the part number AYA4020 Mowog brake drum.
It measures 180mm across so it appears to be the same as the std 21A22 drum.
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Goldbrocade_62
PostPosted: Mon Apr 13, 2015 9:02 pm 
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MG midget maybe??
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Morris 1100
PostPosted: Mon Apr 13, 2015 9:03 pm 
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AYA4020 is an Australian part number and is listed in some Australian Mini parts books.
21A22 is a UK number.

This probably means they were getting brake drums made locally.
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gtogreen1969
PostPosted: Mon Apr 13, 2015 9:12 pm 
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Morris 1100 wrote:
AYA4020 is an Australian part number and is listed in some Australian Mini parts books.
21A22 is a UK number.

This probably means they were getting brake drums made locally.


Thanks, That's what I needed to know. All good - I will put it back on.
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winabbey
PostPosted: Mon Apr 13, 2015 9:36 pm 
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As mentioned above, it's the Australian produced version of the standard Mini (i.e. non-Cooper S) brake drum. First released into production in May 1963, so they must've used the UK part until then. You may find the casting date code on there too.

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drmini in aust
PostPosted: Mon Apr 13, 2015 10:10 pm 
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AYA4020 listed in Mini K book PUB1038 (final).

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