Derale 8 Pass 15" Dyno-Cool Series 6000 Aluminum Transmission Cooler 20-OTL-NB-L built with lightweight material designed

built with lightweight material designed specifically for snowmobiles

1/2 in Male Barb Fittings

Original replacement tube and grommet assemblies included

1964-1965 GMC B3500

Bearings / Bushings / Seals

Derale 8 Pass 15" Dyno-Cool Series 6000 Aluminum Transmission Cooler 20-OTL-NB-L built with lightweight material designedThis universal all aluminum transmission cooler is perfect for today's full size car and truck automatic transmissions. Featuring embossed turbulators inserted into full 1 2" tubing to agitate fluid and louvered cooling fins, it extends transmission life by helping to prevent heat related transmission failures while improving shift performance. This kit comes with a complete transmission cooler hardware kit to easily install onto vehicles with 5 16"