The SN20 is a low pass filter. This filter allows signals of valid tachometer frequencies to pass through to the gauge while blocking high frequency interference. This filter would be helpful if you have interference on the tachometer's signal which is causing erratic behavior on your tachometer.

Features:

More From This Category

Dakota Digital Sending Unit, EGT Sensor, Electrical, Pyrometer, 18 ft. Length, 0- 870 C, Odyssey/Odyssey II, Each

Dakota Digital Sending Unit, EGT Sensor, Electrical, Pyrometer, 18 ft. Length, 0- 870 C, Odyssey/Odyssey II, Each

$185.03

Dakota Digital Gauge Kit, Direct Fit, 1967 For Camaro/ For Firebird, Analog/Digital, Black Background, Multicolor Illuminated Display, Kit

Dakota Digital Gauge Kit, Direct Fit, 1967 For Camaro/ For Firebird, Analog/Digital, Black Background, Multicolor Illuminated Display, Kit

$3,500.56

Dakota Digital Gauge Kit, 1963- 67 For Chevrolet Corvette, Analog, Black Background, Alloy Style Face, Blue Display

Dakota Digital Gauge Kit, 1963- 67 For Chevrolet Corvette, Analog, Black Background, Alloy Style Face, Blue Display

$3,287.76

Dakota Digital Gauge Kit, 1968- 77 For Chevrolet Corvette, Analog, Silver Background, Alloy Style Face, Red Display

Dakota Digital Gauge Kit, 1968- 77 For Chevrolet Corvette, Analog, Silver Background, Alloy Style Face, Red Display

$3,713.36