I cannot speak for Napa....but if you order from Ground Up, The Parts Place, Inline Tube, Right Stuff, OPGI....they all come from the same manufacturer.
They had a bad batch of them a six months ago.....I went through a half dozen of them. They do stand behind their products....as they kept sending me a new master after each one failed. I have an entire shelf of them....as they did not want them back.
Dan
Last edited by Postsedan; 10-30-2017 at 10:41 PM.
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