Comments about Teleflex Teleflex Marine Code L 4-Stroke Engine Synchronizer:
Hooked it up in less than an hour. Worked as advertised without any hassle. Highly recommend for an older boat with twin inboards. Now I don't have to guess if engines are synched! You think you can synch by ear, but this is much easier.
Combined it with the Teleflex 2 1/2" gauge.