105 and Alfetta fly-wheel ring gears

1300-1600-1750 engine.
oe part number 105 41 0240100
220mm diameter with 110 teeth. 

2000
e arlyoe part number 105 12 0240100
230mm diameter with 131 teeth  

2000 late
oe part number 116 00 0240101
230mm diameter with 130 teeth