Unscrew injector "bolt"?

[Slobo2712]

Hello which tool I need to unscrew this bolt whatever its called..which holds injector on 307 1.6 hdi ?Tnx in advance

[thewww]

you need a torx socket
https://www.screwfix.com/p/hilka-pro-cr ... -pcs/7617k

[white exec]

Or try a couple of nuts put on to the thread, and then locked together. You might be lucky.