Cummins Marine QSB 5.9 Coolant Temperature Switch Locations
The coolant expansion tank on a Cummins QSB 5.9 will typically have (2) plugged 1/4″ NPT ports that are available to install a temp sender/switch. SMX Deluxe Temperature Alarm Switch
The coolant expansion tank on a Cummins QSB 5.9 will typically have (2) plugged 1/4″ NPT ports that are available to install a temp sender/switch. SMX Deluxe Temperature Alarm Switch