The 57002 is a Mazda Skyactiv specific filter that has no anti drain back valve (like a Mazda OEM filter). I was aware of it's existance but never used them as they were more expensive than Mazda OEM filters at the time. I can now get them from Rock Auto for about half the price of an OEM filter. Would they be equal to or better than the quality of a Mazda OEM filter? I've read here that Wix has had some issues with some of their filters. Is that all in the past or a current issue?
Wix 57002 quality
- Thread starter GaryMX5
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- Sep 26, 2025
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The current Wix filters don’t seem as highly regarded as the pre M+H Wix filters
RA did also recently (month or so ago) have some Carquest Premium 84002 that were relabeled Wix 54002 from the time. Most with holes in the center tube. One or two with louvers. Interestingly enough, the ones I got from them ranged from 2013-2015 production. All pre M+H / Affinia Wix made in Mexico. There was a lone late 2015 one that was actually Champ made and contained an ADBV which was definitely not the spec for the filter.
RA did also recently (month or so ago) have some Carquest Premium 84002 that were relabeled Wix 54002 from the time. Most with holes in the center tube. One or two with louvers. Interestingly enough, the ones I got from them ranged from 2013-2015 production. All pre M+H / Affinia Wix made in Mexico. There was a lone late 2015 one that was actually Champ made and contained an ADBV which was definitely not the spec for the filter.
I just cut one open. It looked ok quality but the louvers are pretty tight. I never could bring myself to use it when I could get OEM filters for similar price
One of the reasons I inquired is that the Mazda filters seem to increase in price frequently. At my dealership the cost is 16 bucks or so. On line prices (where I've been buying OEM) aren't a whole lot less once shipping is included. I have two cars that use the same filter and I go thru them fairly frequently. I was hoping the Wix was of reasonable quality to justify using it and spending half as much. Another issue I recently learned is that the wix appears to be a dual use filter and used for both turbo and non-turbo motors (most other filter manufacturers spec the same filter for both Mazda motors as well). Mazda has separate filters for each motor. My understanding is that the Mazda turbo filter has a BVRP that opens at 20 to 22 psi. The NA filter opens at 16 to 18 psi. That begs the question of where the wix (and others) open. Is it an average of the two or is it even an important numerical distinction? And whether center tubes holes flow better than louvers I have no idea, but it sure looks like holes would!
According to the Wix website, the bypass valve setting is 11 - 14 psi.
I’ve been using wix for a while now and I’ve had no issue with them. Crazy how people dismiss them and follow whatever anyone says is good or bad on here
Unfortunately, we can't trust that to be accurate due to Wix frequently white washing specs.
What's the turbo oil filter number from Mazda ?
Or, maybe, the cut open filters have show definitive object quality evidence to NOT use them? Plenty of examples. Nobody has to blindly follow. If they look at some of those and still decide to use them, that's on them. Also, there is a reason Napa went to PG on current production. That alone should say something.
PY8W-14-302 - original, made by Roki in Japan
PY8W-14-302-MV - “Mazda Value” version
1WPY-14-302 - current replacement, made in Thailand
I'm showing:
1WPE-14-302
1WPY-14-302 (Turbo engines.)
The ones I have are PE01-14-302B. They seem to change the part numbers quite a bit.
Poster asked for Turbo filter part numbers, and I provided them. At the Mazda parts counter in the US, they can sell the PY8W-14-302-MV or 1WPY-14-302 filter for Turbo car. The PY8W-14-302 filter only comes on new cars and was superseded a few years ago in the US dealer parts system.
PE01-14-302B, PE01-14-302B-MV, and 1WPE-14-302 are the non-Turbo filters.
Out of curiosity, how important is the BVRP's opening pressure? Based on a few numbers posted here and I not being a engineer to properly evaluate them, they seem to raise more questions than they answer. The Wix BVRP numbers mentioned above (accuracy noted) and possibly all the other companies who spec one filter for both Mazda motors (turbo or NA) maybe less than either of the Mazda pressure numbers I found. Is this good or bad when a filters BVRP may open at a lessor pressure than the OEM filter spec. I know unfiltered oil is released but it seems more frequent openings due to the lower pressure release may not be a good thing. Assuming all these other filter manufacturers use a conservative opening pressure, will this cause potential or eventual harm to one or both motors? If so why would they do it knowing Mazda has different filter specs for each motor. If not, why did Mazda develop a separate filter for each motor? I assume they had a good reason other than making a few bucks selling multiple filters. Is the difference in the opening pressures not that significant? This is for far brighter minds than mine and forgive me if it's not worth more discussion.
Was it not for supply issues? During Covid
Where did the bypass valve specs come from for the Mazda OEM filters?
The bypass valve setting of the oil filter is based on both the engine oiling system specs (pump flow and oil viscosity specified), the anticipated debris loading factor (which increases the dP with time) and also the oil filter's overall flow performance (dP vs flow). That's why you can look at 10 different oil filters specified for the same engine and they could have different bypass valve settings. If a filter maker is going to specify one filter for dozens of different engines (which is typical unless there's a very specific application), then I'd think they would set the bypass valve on the higher end of what's required so it will work on all of those engines without being in bypass more than necessary.
If a filter maker specifies a filter for an engine, all you can do is trust that they looked at the factors that affect the dP across the filter in use and set the bypass valve appropriately.
What got me initially interested was this site. It was the best description of the differences between the two mazda filters I had seen.
https://artsautomotive.com/art-icle...mazda-oil-filters-1wpe-14-302-vs-1wpy-14-302/
While it didn't provide specific valve opening pressures, the spring test they conducted indicated a significant difference in spring rate. I then did the customary online/google search. For the NA filter most numbers I quoted came from Mazda forums like Miata.net which I have found credible. For the turbo filter I actually found some numbers in a thread here on BITOG. The number (or range) I quoted was also found on some other mazda forums including a Mazda cx5 forum. I can only assume these numbers are reasonably correct/accurate.
I used that filter once. Nothing wrong with it but it was convenient at the time. I use Mazda filters I get from the local dealer.