I think its this? 055105277 - spring pin 6,2X22 - €0.4 or maybe: N 10105801 -parallel dowel pin 6M6X30 - €0.37
yeah, im leaning towards the 1st part number as it listed for both mk1 and mk2 8v, the 2nd one is 16v mk2 and g60 only. I wasnt aware that there was a difference between 16v and 8v 210mm flywheels though!