Hello All 

I have been having trouble with trying to get my rear main seal  / output shaft seal to stop leaking 

I believe that it may have something to do with the stop disk/ thrust washer  and how it passes through the seal   

Item number  10  

[b][b]11 21 1 460 873[/b][/b]

STOP DISK - 1MM

or 

[b][b] 11 21 1 461 813[/b][/b]

STOP DISK - 1,25MM

Is this item required  ? 
 

Matthew Brisbane wrote:Item number 10. Is this item required?

A K100 like yours has one; the K75 doesn't have one. I suggest you keep it in the assembly. If it's damaged, measure its thickness and replace it with an OEM washer/stop disk of the same thickness.

What is that a strand of material visible in the lower part of the second image?