The Derale 15719 Fluid Control thermostat kit regulates when fluid is sent to an external cooler. The thermostat stays closed until the fluid warms up, then opens to route it through the cooler, which speeds warm-up and holds a steady operating temperature. It uses 1/2 inch NPT ports for the fluid lines.
Specifications:
- Type: Fluid control thermostat kit
- Ports: 1/2" NPT
- Function: Opens to route fluid to the cooler once warm
- Use: Engine oil or transmission fluid cooler circuits
- Part number: 15719
FAQ
What does the Derale 15719 do?
It routes fluid to an external cooler only after the fluid warms up, which speeds warm-up and steadies temperature.
What size are the ports?
They are 1/2" NPT.
Where is it used?
In engine oil or transmission fluid cooler circuits.
Is it a complete kit?
Yes, it is sold as a Fluid Control thermostat kit.

