Pre-Oiler Pressure Switch

Pressure Switch (0166-408) for Pre-Oiler: 12 or 24 VDC ( same switch ) weighing only 2.6 oz ; factory pressure set at 55 +/-7.25 PSI, adjustable via a set screw in the bottom of the switch (see left pic); N.C. diaphragm Pressure Switch with an adjustment range of 14.5 PSI to 145 PSI so you can custom set your Pressure Switch for your minimum engine oil pressure, with a maximum press of 4350 PSI, that has a 1/8″ male NPT with zinc plated steel body.  Oil Pressure Switch function is to turn the Pre-Oiler OFF when your engine oil pressure from your engine driven mechanical oil pump reaches minimum operating pressure, and turns ON the Pre-Oiler as a Back-Up Oil Pump if the engine driven mechanical oil pump ever fails and the engine oil pressure drops below ~60 PSI ( for example, or whatever you set for your minimum engine oil pressure ) — $70.00 each via cash, check or money order / $72.80 each credit card price ( BUT, we prefer checks ), plus S & H , and CA Sales Tax ( if you live in CA ).