AEM Digital Oil Pressure Gauge. 0~150psi 30-4407 Tein " is a sub-valve system

" is a sub-valve system composed of a combination of 2 mechanisms

a valve that closes off the radiator bypass hole when the thermostat opens

we noticed that not everyone needs a high pressure

Excellent Performance and Unmatched Fitment

Positioning of fuel injectors is critical since optimizing the spray angle of the injector can improve fuel atomization and efficiency

AEM Digital Oil Pressure Gauge. 0~150psi 30-4407 Tein " is a sub-valve systemOVERVIEW AEM Digital Oil Pressure Gauges combine unsurpassed accuracy, speed and control with an easy to read digital LED interface that displays oil pressure in 1 PSI increments, and a sweeping LED "needle" that lines the edge and moves as oil pressure changes from 0 to 100. The oil pressure gauge's digital readout will automatically increase and decrease in intensity due to the built in ambient light sensing photocell. AEM's digital oil pressure