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New Style Oil Pump ?

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The washer is a pretty specific diameter, hardness and thickness to provide a good, properly- aligned

seat for the back of the sprocket.  And the nut is oil- resistant...



Given how inexpensive they are and how many OTHER BMW motors have problems with

oil pump sprocket shedding, I'd just order the OEM parts.



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...you might find some Nylocks that eventually lose their "nylon" being continually immersed in oil...


(yes, I know, that means it's not nylon...)


And that shim NLA???  Damn, that's stupid.  It really is critical to retaining the sprocket...



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  • 2 months later...

meh.  will probably work.  Not the best solution.  I'd take that nut to a real bolt and nut store and find one wtihout the "nyloc" and one with a mechanical deformation lock nut.  

edit.  Looked it up, it's called a "stover lock nut"

Edited by oldguy
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