Big Boss Performance Radiator | Peterbilt 379 X12 Depending on the severity of

Depending on the severity of the build-up you may have to agitate surfaces using a Microfiber Wash Mitt or a Nylex Handle Wheel Brush

Big Boss CAT E-Model Exhaust Manifold

When machine polishing

This premium injector kit from PDI is designed for the Detroit 12

Big Boss Performance Radiator | Peterbilt 379 X12 Depending on the severity ofBig Boss performance radiators for Peterbilt 379 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. Call for availability.