The diesel injectors tend to almost weld themselves in place, and can break or snap off rather than come out.
I'd avoid removing them unless it was absolutely necessary; or if I was going to replace them anyway and breaking them wasn't all that of a concern .
Why do you need to remove them?

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X5 E70 3.0d M-Sport , 2010 Titan Silver , ZF 6HP28, 320hp.

X5 E53 3.0d Sport, 2006 LeMans Blue, ZF 6HP26, diesel .