The Derale 31540 is a 2-1/4 inch aluminum fan spacer for belt-driven mechanical cooling fans. It moves the fan forward on the water pump shaft so the blade sits in the correct position relative to the radiator and fan shroud, which improves airflow through the core. The spacer is machined from aluminum to keep rotating weight low.
Specifications:
- Type: Belt-driven mechanical fan spacer
- Spacer length: 2-1/4 inch
- Material: Aluminum
- Application: Repositions a belt-driven fan forward toward the radiator
- Part number: 31540
FAQ
What does a fan spacer do?
It moves a belt-driven mechanical fan forward toward the radiator so the blade sits properly within the fan shroud for better airflow.
What is the Derale 31540 made of?
The 31540 spacer is machined from aluminum.
How thick is the 31540 spacer?
It provides 2-1/4 inches of forward spacing.

