Can 2005 Nissan Armada With OEM Transmission Cooler Add Second Transmission Cooler

Question:

I have a 2005 Nissan Armada whose transmission has been overheating. I would like to add a transmission oil cooler to help bring down the temps. My Armada currently has 260k. As Ive begun researching and looking at the vehicle, I found that the Armada already has a transmission cooler sandwiched between the radiator and the AC cooler. Can I add an additional transmission cooler? If so, where would be the best location?

asked by: Lamoni P

Expert Reply:

Even though your 2005 Nissan Armada already has a transmission cooler you can absolutely add a secondary cooler because fluids will not over-cool.

In regards to fit, the rule of thumb with aftermarket transmission coolers is you want to get the largest one that will fit in the space you have. For example, the Derale Series 9000 Plate-Fin Transmission Cooler Kit # D13614 is very large, measuring 11" wide x 11-3/8" tall x 1-1/4" deep and would be my recommendation if you have the space to mount it.

The best position would be anywhere that allows the cooler to get the maximum airflow; if you take a look of the cutout of the linked directions you can see where the best spots would be, with number 1 being the optimal spot.

If the Derale Transmission Cooler Kit # D13614 is too large, I recommend taking a look at the Derale Series 8000 Plate-Fin Transmission Cooler Kit # D13502 which is 11" wide x 7-1/4" tall x 7/8" deep.

I have added links to video reviews of these coolers for you to check out as well as links to a couple help articles on transmission coolers which I recommend taking a look at.