I also have two used ZKW right side (but I am pretty sure the ballasts are the same from side to side)

15 CONTROL UNIT XENON LIGHT AL 2 09/2001 63127176068 $449.90
15 CONTROL UNIT XENON LIGHT ZKW 2 09/2002 63126925647 $449.90

16 Ignition element Xenon-light AL 2 09/2001 63126907504 $114.15
16 Ignition element Xenon-light ZKW 2 09/2002 63126925648 $186.45