PH8A made by Champ in Mexico?

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Dec 31, 2017
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SE British Columbia, Canada
I purchased a Motomaster OE Plus PH8A filter and from the printing on the filter looks like it’s a Champ, but it’s made in Mexico instead of the USA. It has a recognizable 6 holes, where one hole is larger than the other 5. Plus it has “ AA “ stamped on the plate. I recall seeing this before on this forum. Anyone recall the design?

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Yep, looks like a Champion Labs made filter ... printing on the dome pretty much just a Champion Labs style.
 
 
Why is one hole slightly larger? That's odd.
I am going to guess that a broken punch in the die was replaced and the one available was larger. Or possibly all the others are worn that much.

Its also possible its an index mark, for assembly orientation. It seems unlikely orientation on assembly would matter, but its possible there is a tab or notch used for some assembly process?
 
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