Boating Accessories New Mercruiser Thermostat Kit 160 Degrees 807252T / 807252Q5 710-807252Q 5

Exactly to Mercruiser specs.. installed and engine ran perfectly, took it out under load, there was some fluctuating at first but it settled in. Have a little over 600 hrs on my engines so they run a bit warmer at 175-180 but temp was steady snd drop down to 145 at idle.

perfect