A guy at the tractor forum is looking for a hydraulic filter for his Kubota L3400. The OEM filter number is HH3A0-82623. At this site, they list that filter as a replacement for the 3A431-82623, but, neither one of those numbers produce at the WIX, Fram or Purolator sites. According to WIX, they're valid numbers, but they don't have a match. Don't know the thread size or any other details. Any ideas, or should he just bite the bullet and spend the $$$ for OEM?