Thanks O2 - you are the man.
Indeed - what app are we talking about?
The Pur. number cross references, Baldwin wise:
Descriptions : Microlite Full-Flow Lube Spin-on
Contains : Anti-Drainback Valve 20 PSI By-Pass Valve
Fits : Ford, Honda, Mazda, Porsche Automotive; Kubota Engines
Replaces : Ford D87Z-6731-A; Mazda 8173-23-802
Thread : M20 x 1.5
O.D. : 3 1/32 (77.0)
Length : 4 1/16 (103.2)
I.Gskt : G481