Faria Coral 4" Tachometer (7000 RPM) (All Outboard) [33005] Brand_McMurdo The GT51M-TM transom mount transducer

The GT51M-TM transom mount transducer provides ultra-clear sonar pictures of objects

Six #14 x 1-1/2" full threaded screws

Slim profile (7" high and only 3 pounds) makes for an unobtrusive mount

*600W Mix and Match cables cannot be used with 1kw transducers or CHIRP transducers

Faria Coral 4" Tachometer (7000 RPM) (All Outboard) [33005] Brand_McMurdo The GT51M-TM transom mount transducerCoral 4" Tachometer (7000 RPM) (All Outboard) Perimeter lighted Black dial with stylish White and Blue graphics, Black aluminum bezel with burnished leading edge, contoured White pointer, and flat glass lens. Electronic tachometers work by counting pulses generated by the ignition system, alternator, tachometer signal generator or magnetic pickup sender. The tachometer is hooked up to +12 VDC, Ground and one of the signal sources. 4" Hole Size: 3.