The washer in question (finger pointed at) with spring washer under.
You can see that moving the washer up let’s you access the thinner stainless steel inner Stantion which the collar will pass over 😜 ...
@perky there are two types be careful, one has a round splitter box and one is oblong that is the later one, the problem arises when the oil pump cable goes into the housing and you try to fit the retaining clip and it’s the wrong length.
