The Derale 25702 is a universal thermostatic sandwich adapter that installs between the engine block and the spin-on oil filter. The built-in thermostat opens once the oil warms up to route it through an external cooler, helping the engine warm up quickly and hold a steady oil temperature. It provides 3/8 inch NPT ports for the cooler lines.
Specifications:
- Type: Thermostatic oil filter sandwich adapter
- Cooler ports: 3/8" NPT
- Function: Built-in thermostat opens to route oil to the cooler once warm
- Mounting: Between the engine block and spin-on oil filter
- Fitment: Universal
- Part number: 25702
FAQ
What does the Derale 25702 do?
It is a thermostatic sandwich adapter that routes oil to an external cooler once the oil is warm.
What size are the cooler ports?
They are 3/8" NPT.
Where does it mount?
Between the engine block and the spin-on oil filter.
Is it universal?
Yes, it fits spin-on oil filter setups universally.

