Installing Derale Combination Transmission/Engine Oil Cooler, Part # 13302, in a 2010 Honda Odyssey  

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The Derale Combination Transmission/Engine Oil Cooler Core, part # D13302, offers the convenience of being able to cool two engine fluids within one single housing. The protocol for cooling engine fluids is generally to cool the engine oil as a first priority, followed by the transmission fluid, and then the power steering fluid.

Coolers are not vehicle-specific, meaning that you can use the largest one that will fit in the space available in front of your air-conditioning system condenser. In the case of fluid coolers, larger is better since the greater the surface area, the greater the heat exchange. The Derale combination cooler, part # D13302, measures 3/4-inch thick, with height of 12-5/8 inches and overall width (including the tubing on both sides) of 16-13/16 inches. This makes it among the largest coolers available.

First, you will need to measure the available space in front of your A/C condenser (or in front of your radiator) to confirm that this unit can fit without interfering with any other components. If this cooler is too large, you can select from among the other Derale products available to find the largest dual cooler that will fit. Other combination coolers from Derale include part # D15301 (1-3/4 inches thick x 10-1/2 inches tall x 13-15/16 inches overall width); part # D13322 (3/4 inches thick x 10-1/4 inches tall x 12-13/16 inches overall width); and part # D15331 (3/4 inches thick x 7-5/8 inches tall x 13-15/16 inches overall width). In the case of cooler # D13302 you will notice that the two sections of the cooler are not the same size; one makes 4-passes through the cooler and the other 6-passes. If you do choose this cooler, use the 6-pass section for engine oil and the 4-pass section for transmission fluid.

You will also need components to adapt your Odyssey oil filter mount with fittings to re-route your engine oil to one section of the cooler. I recommend a filter relocation kit, such as part # D15718. This kit includes a spin-on adapter that installs at the present oil filter location, a remote filter mount, 10 feet of hose, brass fittings and mounting hardware.

Note that when using this filter relocation kit you will only need one of the # D12006 install kits. The D12006 includes the mounting hardware to secure the cooler to the A/C condenser, 4 hose clamps, 4 feet of hose and the Insta-Dapt radiator adapter that fits most vehicles with 5/16" transmission lines. In certain instances
additional fittings or alteration of the OEM transmission fluid lines may be required to complete installation.
Please be aware that once you have installed the oil filter relocation kit, you will need to use a different oil filter, type PH8.

I have included a video showing a typical installation of a transmission cooler; while the cooler and vehicle are different than yours, the process is essentially the same and the video should provide some helpful guidance. Also included are two FAQ articles that cover basics and installation tips.

expert reply by: Adam R

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