The Derale 13950 is an Atomic Cool remote transmission cooler kit for performance, muscle, hot rod, and truck applications, including heavy towing and hauling. It pairs a heavy-duty 15-row plate and fin cooler with an 8" reversible Tornado electric fan, so the cooler supplies its own airflow and can mount almost anywhere. A clear anodized aluminum shroud and brackets hold the assembly, and a 180°F in-line thermostat switches the fan on by fluid temperature. This version uses -6AN plumbing and includes everything needed to install on vehicles with 1/2" transmission cooler lines.
Specifications:
- Cooler: 15 row plate and fin, 22,000 BTU/hr
- Fan: 8" reversible Tornado, 500 CFM, 4.8 amp draw
- Ports: -6AN inlets
- Dimensions: 12-3/4" W x 9-3/8" H x 4-5/16" D
- Added fluid capacity: 17 oz
- Shroud/brackets: clear anodized aluminum
- Included: cooler, two -6AN hose barb fittings, 180°F in-line thermostat, 10' hose, hardware
- Origin: made in the USA
- Part number: 13950
FAQ
What is the Derale 13950 kit for?
It is a fan-equipped remote transmission cooler kit for performance cars and trucks, including heavy towing and hauling.
What port size does it use?
It uses -6AN inlets and includes -6AN hose barb fittings.
Does it include a fan and thermostat?
Yes, it includes an 8" reversible Tornado fan (500 CFM) and a 180°F in-line thermostat to activate the fan.
How much cooling does it provide?
The 15-row plate and fin cooler is rated at 22,000 BTU per hour.

