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PDI 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.
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🇺🇸 Ship from USA · On Agora since 2026
$2,950.00