Archives....again
Look in archives under "engine filters" by Tom Soko. He lists all sorts of replacement filters. My local Universal dealer will not stock my size filter and "special orders" them when I need them. I tried the Kubota filter (p/n 70000-15241) which works fine except it is slightly larger and is a snug fit next to the coolant hose. Fram filter (p/n PH-3593-A) is slightly smaller in diameter and seems to fit better.