M27x2 to 3/4" coolant hose 
straight brass beaded barb
Paccar Cummins part#
V38-1089 V38-1166 V88-1123

✅ Fluorine rubber O-ring seal
temperature range between -40 and 500 degrees Fahrenheit
High pressure combined red copper + O-ring seal
temperature range between -40 and 500 degrees Fahrenheit
✅ PTFE Teflon thread sealing tape
✅ O-ring silicone lubricant