Compound Add-A-Turbo Kit

Features:

• Compatible with 2013–2018 6.7L Cummins RAM
• Designed for use with stock Holset turbo
• Adds BorgWarner S475 turbocharger to system
• Supports power levels up to 650 horsepower
• Helps significantly lower exhaust gas temperatures
• Retains factory exhaust brake functionality
• Includes new A/C lines for proper fitment
• Complete bolt-on kit with all hardware included
• Maximizes engine airflow and performance potential
• Ideal for towing and performance diesel builds
• Not emissions legal for on-road vehicle use

Turn Your Stock Turbo Into A Serious Performer

If your RAM's 6.7L Cummins is still running a stock turbo and you're craving more power, the Industrial Injection Compound Add-A-Turbo Kit is exactly what your build needs. This bolt-on kit transforms your existing setup by pairing your factory Holset turbo with a massive BorgWarner S475, giving you serious airflow and performance without sacrificing reliability. It's a smart, efficient way to push your truck up to the 650 horsepower range, all while keeping your factory exhaust brake intact. Lower exhaust temps mean better towing performance and more consistent power under load, especially for those long hauls or hot summer climbs. And because it’s a compound setup, you get strong bottom-end response with massive top-end gains, a true best-of-both-worlds solution. Whether you're building a tow rig or a weekend powerhouse, this kit delivers the extra grunt you’ve been looking for. It’s everything you need to wake up your Cummins without losing the drivability you depend on.

Engineered To Maximize Boost Without Sacrificing Function

The Industrial 22C407 Compound Add-A-Turbo Kit is built for 2013–2018 RAM 2500 and 3500 trucks running the 6.7L Cummins engine with a stock Holset turbo. It’s designed to compound your factory turbo with a BorgWarner S475 unit, featuring a 75mm compressor, 96mm turbine, and 1.32 A/R housing. This combination drastically improves airflow, allowing your engine to operate more efficiently while supporting horsepower levels up to 650. One of the biggest advantages is that the factory exhaust brake remains fully operational, which is critical for towing and daily use. The kit includes new A/C lines for proper fitment, along with all hardware required for installation. This system delivers cooler exhaust temps and smoother power delivery across the RPM range, making it ideal for high-performance builds where heat control and drivability are equally important. Note that a stock turbo is required, and this product is intended for closed-course competition use only.

Fitment: 2013, 2014, 2015, 2016, 2017, 2018 RAM 2500/3500 6.7L Cummins

Notes:

• Designed for 2013–2018 RAM 2500 and 3500 trucks
• Fits 6.7L Cummins engines with stock Holset turbo
• Kit compounds stock turbo with BorgWarner S475
• Supports up to 650 horsepower with proper tuning
• Stock turbo must be present to use this kit
• Factory exhaust brake remains fully functional
• Helps reduce exhaust gas temperatures under load
• Includes all hardware and new A/C lines
• Ideal for towing, high-performance, or competition builds
• Not emissions compliant for on-road or dual-use vehicles
• Intended for closed-course competition use only