QuickCar's Digital Oil Pressure Gauge is a 0-100PSI 2-1/16" electric gauge that features an adjustable warning level. The warning function flashes the display as the oil pressure drops below desired readings. The lightweight plastic casing is perfect for high performance uses. Gauge includes mounting hardware. 67-003 does not include sending unit (Pt.# 63-230) that is required for the gauge to function.