The Derale Fluid Control Thermostat regulates engine or transmission oil temperature by routing oil around the cooler while it is cold, then opening at 180 degrees F to send full flow through the cooler once the oil is warm. This helps the drivetrain reach operating temperature sooner, which is useful in cold climates. It is built from billet-style cast aluminum with 1/2 inch NPT inlet and outlet ports and comes with a universal mounting bracket that supports four mounting positions.
Specifications:
- Type: inline fluid control thermostat
- Activation temperature: 180 degrees F
- Ports: 1/2 in NPT inlet and outlet
- Material: billet-style cast aluminum
- Included: universal mounting bracket (four positions)
- Function: bypasses cooler when cold, full flow when warm
- Part number: 25792
FAQ
What does the Derale 25792 thermostat do?
It routes engine or transmission oil around the cooler while cold, then opens at 180 degrees F to send full flow through the cooler once warm.
Why use a fluid control thermostat?
It helps the drivetrain reach operating temperature sooner, which is useful in cold climates and prevents overcooling.
What port size does it use?
1/2 inch NPT inlet and outlet.
What is included?
The thermostat and a universal mounting bracket that supports four mounting positions.

