4" Heavy-Duty Tachometer (6000 RPM) - Gas - Black

Hole Size: 4" gauge (3.375" [85mm] mounting hole)

Perimeter-lighted black dial with bold white graphics, black aluminum SAE style bezel, contoured white pointer, and flat glass lens.

Electronic tachometers work by counting pulses generated by the ignition 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 and setting the switch on the back to the correct position you let the tachometer know how many pulses are sent per each engine revolution.

Features:

• Wide range of scales
• Available for gas or diesel engines
• Multiple signal sources
• Anti-scratch glass lens
• Plastic Cases for corrosion resistance and long life
• Black