The Derale 31520 is an engine cooling fan blade spacer kit for belt-driven fans. It mounts between the water pump hub and the fan to move the fan blade forward, positioning it correctly within the radiator shroud or closer to the radiator core for better airflow and clearance.
Specifications:
- Type: Belt-driven fan blade spacer kit
- Function: Moves the fan forward for correct shroud and radiator clearance
- Fitment: Universal (belt-driven fans)
- Part number: 31520
FAQ
What does the Derale 31520 do?
It moves a belt-driven cooling fan forward for correct shroud and radiator clearance and better airflow.
Where does it mount?
Between the water pump hub and the fan.
Is it universal?
Yes, it fits common belt-driven fan setups.

