Tru-Cool 40K Transmission Cooler Comparison
As many of you have probably heard by now Dana discontinued the Tru-Cool 40K transmission cooler (LPD47391) that was made in Canada.
So we are now left with aftermarket options and a copy that is made in China.
Here is a comparison.
Long story short they are all almost identical. If you are looking closely the Derale is probably the closest to the original Tru-Cool 40K. The Mishimoto uses o-ring fittings and has a lifetime warranty. The Mishimoto core is about .25" shorter but still had 13 rows.


Tru-Cool 40K Transmission Cooler
Price: $135
Fittings: 5/8"-18 inverted flare
Core Size: 22.75" x 7.25" x 1.25"
Warranty: None
Link: https://stcharlesgarage.com/products/tru-cool-40k-transmission-cooler
Line Kit: https://stcharlesgarage.com/products/tru-cool-40k-cooler-6an-transmission-line-kit


Mishimoto 40K Universal 13-Row Stacked Plate Transmission Cooler
Price: $175
Fittings: 3/4"-16 O-ring
Core Size: 22.75" x 7" x 1.25"
Warranty: Lifetime
Derale 40K 13 Row Series 9500 Plate & Fin Transmission Cooler Kit
Price: $170
Fittings: 5/8"-18 inverted flare
Core Size: 22.75" x 7.25" x 1.25"
Warranty: 1 Year
Link: https://stcharlesgarage.com/products/derale-40k-13-row-series-9500-plate-fin-transmission-cooler-kit
Line Kit: https://stcharlesgarage.com/products/tru-cool-40k-cooler-6an-transmission-line-kit

