My concern is that anytime a washer is being bowed in - the spread of force is not even, This happens when a weaker washer is used. a 10.9 grade wont do this. It will retain its shape and be in proper tension under that nut. Specially on a W124 - as the design of the suspension is a bit faulty, that balljoint is under a constant pulling (separation) force from the spring on the control arm.

Just keep an eye on this - replace it with a 10.9 washer from an autoparts store if you find it misshaped further.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

Sir, THIS washer IS a MERCEDES part. It is NOT "mishapened"! The way it appears in the photo is exactly the way it was pulled from the plastic bag it arrived in. It is the correct part that supercedes the original designed pinch bolt setup. With that said, I am going to have to trust the MB engineers, that they have reason to make this change

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Dale