3rd Gen 5.9L Cummins Intercooler

Lower exhaust gas temperatures, increase air density, and maximize turbocharger efficiency on your 2003–2007 3rd Gen 5.9L Cummins with a heavy-duty aftermarket intercooler upgrade. Factory intercoolers feature weak plastic end tanks and restrictive core designs that are prone to cracking under high boost pressures and heat soaking quickly during heavy towing. Upgrading to a high-capacity, all-aluminum intercooler with cast end tanks and heavy-duty boost tubes ensures superior thermal dissipation, eliminates boost leaks, and delivers cooler, denser air for enhanced power and reliability under extreme-duty use. Shop top-tier intercoolers engineered for exact OE fitment and severe-duty durability.