I found this from NewSixCoupe on Air Cleaners:
I'm looking at an actual RAL 7021 chip (you can't judge color on a monitor) and there's no way that's the right color—its charcoal gray, almost black. I think the number may have been accidentally transposed, because 7012 is a dark gray/green that matches the BMW Museum images above almost perfectly. Its also the color of the air cleaner on my '74. Here's a pic from my trip and you can see how lighting throws things off because here the color has a bluish tint.
This from deQuincey:
@Stevehose yes you are right, there were at least 2 different greys, one dark green grey and the other light grey and i even wonder if there is not a third one as a sort of olive green as to ral, i recall discussing with a shop about 7021 and 7043, for the greendark version, but i have to check nonetheless i give little trust to bmw official response, not sure if they are aware of what happened in "Chez Karmann" back in the seventies,...;-)
This from dbower:
Hello Mr. Bower,
thank you for your inquiry.
The Paintcode of the Aircleaner is RAL 7021
kind regards
Maximilian Karmann
BMW Group
Maximilian Karmann
Corporate Affairs
BMW Group Classic AK-51
Product Manager Parts Sales
Moosacherstrasse Straße 66
80809 München
Mailing address:
80788 München
Email
[email protected]
Web:
http://www.bmwgroup.com/
http://shop.bmw-classic.com
Note that Mr. Karmann is responding specifically to my vehicle so I don't know if the color changed before or after this. For reference, here is the RAL chart, showing clearly that RAL 7021 is a dark gray:
http://www.ralcolor.com/
As an aside, this confirms what Lothar Schuettler told me recently. I remain mystified why so many (including mine) are light gray.
Don
and this from HB Chris:
That is black grey, next to 7022 which is what we used for the b35 air box, it looks black. Get a sample and double check. Even 7012, 7015 and 7031 have more blue and also could be correct.
From a member here:
http://www.e-paint.co.uk/RAL_Colourchart.asp