Turbochargers, compound turbo kits, and exhaust manifolds for 1989-2024 Dodge and Ram trucks with the 5.9L or 6.7L Cummins.
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Diesel Power Source® designs and builds turbochargers, turbo kits, and exhaust manifolds for the Dodge and Ram Cummins, from the 12-valve 5.9L through the 5th Gen 6.7L. Fitment changes with every generation, so this page is the starting point: pick your truck, pick the type of upgrade, or follow the upgrade paths below. Every DPS air and exhaust product is CFD tested during design.
Turbos, manifolds, and piping are flow tested in design
Piping, oil supply and drain lines, and hardware are included
Kits bolt to the stock intercooler, intake, and exhaust
HE-series turbos and T4i and 5G manifolds keep factory equipment
Or start with the engine: 5.9 Cummins parts and 6.7 Cummins parts.
Comparing turbos by engine? See 5.9 Cummins turbos and 6.7 Cummins turbos.
On the 6.7L, the HE363VG keeps factory fitment and the exhaust brake and covers stock to 550 RWHP. On the 5.9L, an S362 single covers stock to 450 RWHP with quick spool.
Larger S300 singles step up with the build: the S363/73 at 400-575 RWHP, the S366 at 450-650 RWHP, and the S369 at 500-750+ RWHP.
An Add-A-Turbo kit with the S475 is matched from stock power up to 600 RWHP, and it leaves a path to a full compound kit later.
Above about 600-650 HP, a single turbo large enough to make the power gives up low-end response. Compounds are typically the way to keep street manners and towing at that level.
HP figures are approximate rear wheel horsepower and vary with tuning, fueling, and supporting modifications. Not sure which path fits? Use the Turbo Selector or call 801-930-8404.
Expect roughly 10 HP per PSI of boost on a 5.9L Cummins and about 13.5 HP per PSI on a 6.7L.
Head studs are recommended above 45 PSI on 1988-2002 engines, 55 PSI on 2003-2007 engines, and 48 PSI on 2007.5-2018 engines.
The factory transmission typically needs attention around 400 RWHP. The stock fuel system reaches its limit around 500-550 RWHP. Past about 800 RWHP, aftermarket connecting rods are the smart move on any modern Cummins.
Tuning is the owner's responsibility. Diesel Power Source® does not sell tuners or tuning.
Ready to compare options? Visit Turbo Systems, Exhaust Manifolds, or Shop by Truck.
Cummins is a registered trademark of Cummins Inc. Diesel Power Source® is not affiliated with Cummins Inc.
Refine:
It depends on the turbo, the load, and the tune. More airflow means more complete combustion, so less of the fuel's energy leaves as exhaust heat. Compound kits give the largest EGT reduction in the DPS lineup. An exhaust manifold alone typically lowers EGTs by approximately 25-75°F on a pickup.
Typical EGT reductions: 150-300°F depending on turbo configuration and load.
Real-world towing improvements:
Stock turbo baseline:
After S300 single turbo upgrade:
After compound turbo upgrade:
Why this matters for engine life:
Some upgrades, such as compound turbo kits or larger single turbos, may require custom tuning to run properly and safely. Other bolt-on components can be installed without tuning. Always check the product description or contact our team to confirm tuning requirements.
Yes. Many of our Dodge Cummins performance products are engineered with towing in mind, focusing on controlled boost, lower exhaust temperatures, and long-term durability. We also offer options specifically intended for daily-driven and work trucks.
The best upgrade depends on your goals, such as towing, daily driving, or high horsepower. Diesel Power Source offers expert guidance to help you choose the right turbo, manifold, or kit based on your truck, budget, and performance goals.
Compounds use TWO turbos working together—small primary + large secondary.
How compounds work:
Compound advantages over single turbo:
Compound disadvantages:
When to choose compounds:
The best 6.7 Cummins turbo upgrade depends on how you use the truck. Stock-style VGT upgrades are great for towing and daily driving, while S300, S400, and compound turbo systems are better for higher horsepower goals.
High EGT on a 6.7 Cummins is commonly caused by airflow restriction, inefficient turbo performance, fueling imbalance, or excessive load. Upgrading the turbocharger or exhaust manifold can help lower exhaust gas temperatures.
Yes. Compound turbos can improve airflow efficiency, lower EGTs, and increase horsepower, especially on trucks used for towing or higher-performance builds.
Common signs include slow spool, loss of power, excessive smoke, boost-related trouble codes, and sticking VGT behavior.
