Every racer around is well aware that the crank sensor is an integral part of the fuel injection system. Holleys EFI Crankshaft Signal Sensor is designed to generate an RPM input signal to the ECU when used in ferrous target crank trigger setups. This sensor is a Hall Effect sensor, meaning it outputs a digital square wave signal, which is ideal for use with most Electronic Fuel Injection Systems Can Operate 8-20 Volts Will Function As An Auxiliary Speed Input M12X1 Threads For Finer Gap Adjustability Approx. 2 in. Length 3 Wire Hall-Effect Crankshaft Sensor Generates Digital Additional Attributes: GTIN: 00090127723968 WARNING CA Proposition 65: No Extened Information: Emissions : Legal US Life Cycle Status: Available To Order Packaging: Quantity of Each: Package UOM: Dimension: 6.0000 x 3.2500 x 3.2500 inches PDF: 199r10800rev2