Big Boss Performance Radiator | Peterbilt 389

Big Boss performance radiators for Peterbilt 389 models feature a dimpled tube design to allow coolant more time to cool properly for more demanding applications. When combined with higher fin count and more efficient cores, PDI radiators increase cooling capacity 15-20% over OEM. Size and Fitment is direct replacement for simple installation.

Constructed of quality aluminum cores with plastic tanks to ensure no tank corrosion and efficient cooling for higher horsepower and demanding applications.