It's been posted here before that WIX no longer makes the majority of NAPA filters as they have in the past 50 years. WIX was bought out by Mann/Hummel, a Geman manufacturer, that sources almost all their filters globally.
Some of the You tube warriors, that dissect filters on their videos have shown that some of the new filters from H/M are not of the same quality, or construction, as the older versions were. Previously the same last 4 numbers of WIX and NAPA filters were identical inside, that has changed.
Formerly if you couldn't get a WIX part, the NAPA version was identical, no longer the case.
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Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix
100% Pontiacs in my driveway!!! What's in your driveway?
If you don't take some of the RACETRACK home with you, Ya got cheated 
  
Last edited by Sirrotica; 02-15-2024 at 12:56 PM.
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