... which is MB number A 001 991 76 70
(i have no idea if it's the correct part, but that's the corresponding number)
As per this NCV3 parts page: (item 13)
If it is for a T1N Sprinter, then:
I would suspect 05125582AA might be the proper number.
MB A 011 988 89 78 "Clip, U-type"
(the catalog says that 6 are needed)
--dick (it really really helps if you provide your model year when asking about parts)