Hi Pete, New to this forum and still trying to work out how to navigate it properly, so my apology if this is the wrong route, plus I have limited access until I've complete 20 somethings ! I have a Skoda Fabia mk1 6Y2 on a 56 plate which I have recently aquired. The previous owner had obviously had an issue with the passenger side window mechanism and long story short had removed the motor and regulator and propped the window up with a plank of wood. How I laughed........ The drivers side works fine as does all the other bits and bobs both sides. I am trying to source a replacement motor for the passenger side but have no part number to start from. I spoke to the main dealer who quoted 6Y2959801 SK1 (original) and SK4 (revised). He actually said K1 and K4 but added the S after a bit of discussion. My drivers side motor is present and has a part number of 6Y2959802 SK240DDRS I've searched the second hand market but there does not appear to be a visual way to see if a part is SK1/SK4 or otherwise. Is that a red herring or significant part of the part identification ? I have seen some suppliers stating that the chips inside are very model specific. Once I have a part I'll have a starting point to work out what else reveals itself as not working !! Any advice would be most welcome. Regards Dave