Upgrading the intercooler pipes and intake elbows on your 5.9L Cummins is crucial for improving airflow, durability, and overall performance. The factory intercooler pipes and intake elbows are more restrictive compared to our upgraded options. With our high-flow intercooler pipes and intake elbows, you'll experience quicker turbocharger spool-up and reduced boost pressure loss. This allows for increased air and fuel delivery to your engine, maximizing horsepower and enhancing performance. Ram Cummins Fitments: 2003, 2004 Ram 5.9L Cummins.Submodel Fitments: Tradesman, Laramie, Laramie Longhorn, Big Horn, Limited, Lone Star, Power Wagon.Some exceptions apply, please see individual product pages for specific fitments.