Industrial Injection 03-07 5.9 Cummins S300 SX-E Single Turbo Kit 66/74 With .91 A/R

This Industrial Injection turbo kit for your 2003-2007 5.9L Cummins includes the S300 SX-E turbocharger with a 66mm compressor and 74mm turbine, a .91 A/R exhaust housing, a custom exhaust manifold, a high-flow downpipe, and all the necessary oil and coolant feed and return lines. This kit is designed to be a complete upgrade, replacing your factory turbocharger and associated plumbing with components that can support significantly more airflow and power.

The S300 SX-E turbocharger is a well-known performer, and this specific configuration with its 66mm compressor wheel and 74mm turbine wheel is balanced for a strong powerband on the 5.9 Cummins. The .91 A/R exhaust housing helps to spool the turbo efficiently while still allowing it to breathe at higher RPMs, making it a versatile choice for daily driving and towing. Industrial Injection has engineered the included manifold and downpipe to integrate smoothly with your truck's chassis and exhaust system, simplifying the installation process. The comprehensive line kit ensures proper lubrication and cooling for the turbocharger, which is critical for its longevity and performance.

When installing this kit, you'll want to have a good understanding of your engine's fuel system and exhaust backpressure. While this kit is designed for a direct bolt-on installation, it's important to ensure your fuel delivery can keep up with the increased airflow from the turbo. Many owners find that upgrading their exhaust system beyond the included downpipe can further enhance performance and reduce exhaust gas temperatures. Please note that this kit is not CARB approved and cannot be shipped to California.