MOTOR METER RACING Universal Diesel Engine 85mm 3-3/8" Tachometer for Alternator W Terminal 4000 RPM White Dial in Dash 12/24 Volt

the tachometer was very easy to install, the only issue was installing the light, directions were not clear

I installed it on my marine Yanmar on my boat. It's possible to calibrate perfectly.

Very nice in appearance, easy to install once figured out where to hook alternator wire. The rpm needle is very stable while tractor is running. Dropped one star due to instructions not stating what direction to rotate the pot to adjust rpm reading. When I first started the tractor the needle pegged, so shut down immediately as not to damage instrument. Then had to guess which way to turn the adjustment before restarting. Got lucky. FYI as viewing back of tach, rotate pot clockwise to lower rpm reading. Once adjusted tach has been working well.

It was a great replacement for the OEM part at 1/4 the cost could not have been more pleased

Very poor instructions. Still dont know if i installed right.

The media could not be loaded. This was the only tach I could find that went to 4k rpm and was compatible with a single cylinder motor. Needed this for lawn mower build. Looks cool and works great. Calibration is key.

Used them on an old cummins on my boat that had tachometer drives. (Didn't hook to the alternator). Setting was very close at install just a minor tweak and locked in.

Second one I ordered, have to return it again because they both are missing the mounting bracket clearly stated in the description and shown in the picture😡😡