O² O2 Oxygen Sensor Adapter Bung Fitting Fits The Exhaust Manifold On Datsuns andNissans With The Larger Diameter Zirconia Sensors
For sensor threads of M18x1.5
Outer threads are M24x1.5
Wrench size is 1.250"
Can be used as a weld-in weld in bung on headers and other manifolds
Too many to list here, see pics section
ALSO, some later model Nissans use this bung, but it is not listed in the parts catalogs