Good stuff.
A couple of interesting points:
1) The Wix 51347 is comparable to the Wix 51626 I found for my tractor. Besides obviously having the same thread size, the 51347 is about an inch taller but also about 3/4" smaller in diameter with a total volume of 32.35 cubic inches. The 51626 has a total volume of 40.17 cubic inches. They are both full flow filters with anti-drain back valves, have the same paper 21 micron media, and the same by-pass valve setting of 8-11 PSI. Where they differ the most is that the 51347 has a burst pressure of 325 PSI while the 51626 has a burst pressure of 370 PSI.
2) It's interesting to see what vehicles these spec for:
51347: Ford Courier (72-82), Hyster, Komatsu, Merc. Bobcat (75-79), Pinto (75-79), Thermo-King, Yanmar Excavators
51626: Dodge Monaco (91), Eagle (88-92), Jeep (87-93)
Both a Ford Pinto and a Yanmar Excavator? Whoda thunk?
Wix 51626 & Napa 1626 Oil Filter: FleetFilter Secure Store - Wix, Fram, Baldwin, Luberfiner