Derale Transmission Coolers - D12902
15-1/4" Wide x 5" tall x 3/4" deep, reliable, all-aluminum tube-and-fin cooler extends the life and improves overall functioning of your vehicle's transmission.
Features:
- Improves functioning and overall performance of transmission
- Extends life of transmission and prolongs period between necessary fluid changes
- Cuts down on heat-related failures
- Agitates fluid with built-in, embossed turbulators for more efficient cooling
- Constructed of durable, lightweight aluminum
- Thermal-conductive metal provides excellent transfer of heat
- Includes:
- High-temperature, OEM spec hose with stainless steel clamps
- Nylon mounting rods
- Insta-dapt radiator adapter
- Recommended for compact cars
- Imported
Specs:
- Inlets: 11/32" hose barb
- Overall dimensions: 15-1/4" wide x 5" tall x 3/4" deep
- Core width: 12-1/4"
- Distance between inlets: 3-3/4"
- 1-Year warranty
Note: The Derale Insta-dapt radiator adapter fits most vehicles with 5/16" transmission lines, but not all. In some cases, additional fittings or alteration of the OEM lines or hoses may be required for installation.
Perhaps the simplest type of heat exchanger, the tube-fin effectively cools a variety of automotive systems. The concept is simple: Fluid cools as it travels through the core by transferring heat out to the fins. The fins then provide the surface area necessary for sufficient heat exchange to take place, allowing the heat pulled from the fluid to dissipate into the surrounding air. Quick, easy and effective.

12902 Derale Dyno-Cool Aluminum Tube and Fin Cooler with Installation Kit
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- Transmission Line Identification to Install Cooler # D12902 on a 2010 Dodge Caravan
- You will not want to use the lines on the condenser, you will want to find the metal lines that are threaded into the radiator that come from the transmission. Check on the sides of the radiator, usually there will be metal lines that are run to the radiator and attach with hex bolts. Those are the lines you will need.
In order to determine which line is bringing fluid to the cooler and which line is return line from the cooler to the transmission you will want to follow these steps:
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