Well I did do a flush recently and it flowed quite well but I was unaware that it needed to be replaced for a flush. The old fluid wasn't too bad so apparently a PO had it flushed at some point in its life since it didn't look like it was 26 years old.

 

Hopefully Roger found another vehicle that uses the same part and his picture isn't just a random NOS piece....

 

The 959 used the same PSD pump so maybe it shared the reservoir ....

 

 

Where did you find it?

 

The 959 PSD hydraulic reservoir is completely different to the 928 S4 1990> one

959 part number = 959 315 167 00

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Same goes for the 959 PSD pump ( very very different to the 928S4 1990> )

959 part number = 959 660 011 00

 

Somehow I just can't imagine 959 parts to be cheaper or more readily available than 928 parts...?

Alan