Shop by Cummins platform
Why upgrade your Dodge/Ram Cummins with performance parts
More power and torque
Performance components improve airflow and reduce backpressure so your truck accelerates quicker, tows stronger, and holds speed on grades.
Better fuel efficiency
Improved charge air and exhaust flow help the turbo operate in its sweet spot, supporting cleaner combustion under load.
Durability you can count on
Thick-wall castings, reinforced partitions, and precision-machined flanges resist cracking, warping, and leaks through repeated heat cycles.
Build it your way
From stock-replacement parts to S300/S400 turbos and compound-over-stock kits, choose upgrades that match towing, daily driving, or high-fuel goals.
How to choose the right upgrade path
- Towing & daily: Earlier spool and stable EGT. Consider stock-replacement manifolds and S300-class turbos.
- Street performance: Mid-size singles with freer housings for stronger midrange while keeping street manners.
- High-fuel builds: Larger S400 or compound paths for airflow headroom; plan converter, gearing, and cooling.
Fitment checklist
- Confirm engine family/year and turbo flange (T3/T4/T4i) before ordering.
- Check downpipe route, intercooler path, steering and A/C clearances.
- Plan supporting items: gaskets, hardware, heat shielding, and monitoring ports.
Install & first-drive notes
- Use new gaskets and quality hardware; torque in sequence on a cold engine.
- Pressure test the charge-air system before first start; verify no pre-turbine leaks.
- Monitor boost, EGT, and (if equipped) drive pressure on initial towing runs; re-check fasteners after heat cycles if specified.
Ready to compare options? Visit Diesel Exhaust Manifolds, Turbo Systems, or the Shop by Truck hub to jump straight to your platform.
Frequently asked questions
Do I need tuning for a manifold or basic turbo swap
Manifold-only swaps typically do not require tuning. Turbo and fueling changes may benefit from calibration to optimize response and shift strategy.
Will these parts work with emissions equipment installed
Many upgrades are designed to operate with factory systems when installed as directed. Always follow local regulations and the guidance on each product page.
What should I monitor after installing performance parts
Boost, EGT, and (if equipped) drive pressure during shakedown and early towing. Investigate any soot traces or whistle indicating pre-turbine leaks.
