I got the filter for my 12h at a New Holland dealer. The part# is JAC 545440. It was pricey but it's not something you need to replace often. Definitely worth it for your tractor, I think you'll see a night and day difference. I did find the filter online also: New Holland JAC545440 FILTER, ELEMENT
Resurrecting a year plus old thread, but I'm trying to find a cross-reference for the hydro filter on my 1968 Sears hydro-trac. The original PN (NLA) is 9341H. Can't seem to find a cross ref for that number in Google.
Can you provide the year for this particular 12H? I've heard that they used the same hydro filters for some years and I'm thinking this might work.
Edited by MountainMichael, December 01, 2014 - 05:13 PM.