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I'm sure I've had one of these before but I can't remember the specific application.

It looks almost the same as a standard '69-'73 SWF washer bottle except that front outer 'corner' is moulded at a 45 deg angle - as if it's designed to allow clearance for something.

The embossed part number is almost impossible to read but it looks like '911 628 721 00' - which in my old version of PET comes up as 'expansion chamber'.

Can anyone identify its specific application ?












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