Trying to source a heating control flap mechanism?

[kiszcat]

Would anyone happen to know where I can get the above part or even how to identify it to buy the right one. I bought the one I thought was correct from eBay and it wasn't the right part. My poor wee Polo always blows hot. Would love to get it sorted.

Also, how easy is it to replace the cigarette lighter socket? Can a generic one be fitted?

Thank you in advance to anyone that can help!