Originally Posted by slacktide_bitog
Originally Posted by y_p_w
What's most likely is that for these filters with plastic frames (rather than rectangles or cylinders with soft foam surrounds) is that there are a limited number of suppliers of aftermarket versions, and all brands are purchased from 2 or 3 suppliers. I doubt it's anything specifically designed to be a Wix or Purolator filter. I remember back when I was getting filters for my 1995 Integra GS-R. It had this odd cylindrical filter, and basically all aftermarket filters for it were either made in one factory in South Korea and another one in Thailand. Didn't matter what brand - they all were either relabeled from one of these two factories. One time I was passing by a particular parts store every day (jury duty) and I asked about a Wix. They ordered it and said I wasn't obligated to buy it. Turned out to be the same part (for maybe $21) that I could find for $12.99 as the Pep Boys house brand.
I don't particularly like the filters that Fram designs and/or makes. The ones with the soft foam surrounds. I remember cutting myself on one when the metal mesh poked through. A lot of them don't have any metal mesh. However, many filters Fram just buys overseas, asks the manufacturer to slap on their part number, and they put it in their own box. I don't really have a problem with those as long as I can get a good price.
Denso used to sell the Integra OE air filter under their name for the aftermarket. Part number 143-2036. This was made in Japan.
Unfortunately, Denso recently scrapped their OE Quality air filter line and replaced it with Chinese FTF. The new part number is 143-3168 and is the same thing everyone else is hawking like you mention
Supposedly, the Hastings AF326 is US-made
That filter was always kind of odd trying to find a replacement. I asked once at an Acura dealer (Honda dealers didn't carry that part) and it was usually around $40. I was actually wondering if K&N was going to make a replacement, even though I'm a bit skeptical about how well they protect the engine. I guess they eventually made one, but for about $90.