EMP Thermostat Kit Mercruiser 60°C/140°F

MerCruiser 1975-78/1982-97
2.5-3.0L 120-140 HP 4-cyl
4.3-4.5L 185-200 HP V6

Also crosses with:
Sierra: 18-3650
GLM: 13370
Mallory: 9-43153