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Fuel Mileage Improvement
This kit also includes all new hardened bolts to ensure proper installation of your manifold
Chrome cover dresses up DEF tank to match your polished fuel tanks
this flywheel is designed for longevity and dependable performance
PDI Big Boss Performance Radiator | Peterbilt 389 Cylinder Head Fuel Mileage ImprovementPDI Big Boss performance radiators for Peterbilt 389 models feature a premium 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
