Review on 🛢️ Black Derale Series 9000 Plate and Fin Transmission Oil Cooler, Model 13613 by Richie Kotun

I bought this cooler to replace the factory transmission cooler on a 2005 Toyota Tundra. With the factory cooler installed, the transmission was about 60 degrees above ambient under normal driving conditions, as measured by a sump-mounted digital temp gauge. After replacing a small factory cooler with this unit, I tend to run about 40 degrees above ambient. The block replacement was well spent.