Faria Euro Black 4" Tachometer w/Hourmeter (4000 RPM) (Diesel) (Magnetic Pick-Up) AIS Systems HD (Heavy Duty) models include

HD (Heavy Duty) models include a wider diameter motor with a powder coated shell

This process generates the highest mechanical properties attainable in a cast aluminum prop resulting from high density tighter grain structure

but if you dont focus that power

Power: via MasterBus

or if you see milky or lumpy oil

Faria Euro Black 4" Tachometer w/Hourmeter (4000 RPM) (Diesel) (Magnetic Pick-Up) AIS Systems HD (Heavy Duty) models includeEuro Black 4" Tachometer with Hourmeter (4000 RPM) (Diesel) (Magnetic Pick Up) Perimeter lighted Black dial with bold White graphics, Black aluminum bezel, contoured White pointer and flat glass lens. Electronic tachometers work by counting pulses generated by the ingition system, alternator, tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC, Ground and one of the signal sources listed above. By selecting the right tach