I don,t now exactly what a longerong is but i asume You mean this

https://www.werk34.de/en/aussenschw...ks-9522011.html

https://www.werk34.de/en/aussenschw...ts-9522012.html

The original parts number is 1H3809847 for the left and 1H3809848 for the right

Maybe You van Google thoe parts Numbers for a store or website in your neighbourhood that also Shell,s them