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I have been using and selling those filters for over 20 years. The pics show me over tightening, lack of lube on the o-ring and/or the need to replace the o-ring more often. The filter on my Challenger is on it's SIXTH bike and has over 250,000 miles on it. I have never had an o-ring shear like in the pic so my belief is the cause is what I have mentioned above.

RACNRAY
 

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1,948 Posts
The common denominator here is the filter/o ring and the mechanic/dealership. These filters are CNC machined which minimizes defects in the end product, but does not eliminate defects. Was the groove machined properly with no burrs? Was the groove lubed before the o ring inserted, VERY IMPORTANT!

Me having more experience with these filters than ANYONE I can say for sure the o ring SCREAMS the above mentioned along with over tightening. You threw away a filter blaming it and the o ring on the www and I betcha you didn't even contact K&P.
 
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