Too late now, dealer fitted it to mine.
Although feels all very dodgy to me. They say they looked at ACC sensor due to fault code, I scanned it a week before and no ACC faults. No signs of any impact on front of the car either. Sensor itself was not changed either, nor the shroud around it..... nothing looks like they had a knock. If it wasn't a company car I'd go up the walls as they want money for it (and at the same time reject to change the scored crap they use as rear brakes on a 6 months old car).