If it is not possible to obtain just that part, then there may be room to manufacture something.
what model do you have?
If it's the same part as mine, i'll drop mine out and see if it's possible for me to manufacture something to replace it.
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X-Trail Ti T30 series II, 2004,
16" Cobalt rims (speedy wheels), Grandtrek AT3 (silica), Alutech front strut bar,
ARB Nudge Bar, complete underbody bash kit, Genuine tow bar, Genuine Roof Racks.