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DPS S300 VGT Ball Bearing Turbo & Manifold Package
Choose OptionsMSRP: $4,389.98 - $4,689.98$4,299.00 - $4,599.00
Dodge/Ram Cummins
Dodge Cummins Performance Parts & Turbo Upgrades
Looking to upgrade your 5.9L or 6.7L Cummins? Diesel Power Source offers 6.7 Cummins upgrades, Compound Turbo Systems, and High-Flow Exhaust Manifolds built to increase horsepower, lower EGTs, improve spool, and make towing more reliable.
Whether you're dealing with high exhaust gas temperatures, turbo lag, or looking for a full performance build, our Cummins turbo upgrades are engineered for real-world results. From stock replacement VGT turbos to S300 and compound turbo kits, we carry solutions for daily drivers, tow rigs, and high-performance builds.
Popular Cummins Performance Upgrades
- 6.7 Cummins VGT Turbo Upgrades (Improve spool & eliminate sticking vanes)
- Compound Turbo Systems for Cummins (Lower EGTs & increase horsepower)
- High-Flow Exhaust Manifolds (Reduce backpressure & heat)
- 2007.5–2012 6.7 Cummins Performance Parts (4th Gen)
- 2013–2018 6.7 Cummins Performance Parts (4th Gen)
- 2019–2024 6.7 Cummins Performance Parts (5th Gen)
From turbo systems and exhaust manifolds to install hardware and replacement parts, Diesel Power Source engineers clean-fit, durable solutions for daily work trucks, tow rigs, and high-power builds. Lower your EGTs 200-300°F, improve throttle response, and protect your engine for the long haul.
200-300°F Cooler EGTs
Proven thermal management for heavy towing
Better Spool & Response
Improved low-end torque and passing power
Built to Last
Thick-wall castings resist cracking and warping
Clean-Fit Solutions
Direct bolt-in for Dodge/Ram chassis
Shop by Cummins Platform
- 5.9L Cummins (1994–2007) — Manifolds and turbo-ready hardware for 12V, 24V, and common-rail
- 6.7L Cummins (2007.5–2024) — Stock-replacement and T4 performance manifolds
- S300 Single Turbos — Balanced spool and towing manners
- S400 Single Turbos — Higher airflow for elevated fueling
- Add-A-Turbo (Compound-Over-Stock) — True twin setups with strong EGT control
- Turbonator® VGT Upgrades — Patented ball-bearing VGT response and control
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 without excessive throttle.
Better Fuel Efficiency
Improved charge air and exhaust flow help the turbo operate in its sweet spot, supporting cleaner combustion under load and reducing wasted fuel.
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 for 150-200°F cooler temps and instant response.
Street Performance
Mid-size singles with freer housings for stronger midrange while keeping street manners. Best balance of fun and usability.
High-Fuel Builds
Larger S400 or compound paths for airflow headroom; plan converter, gearing, and cooling. 200-300°F cooler EGTs even at 700+ HP.
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 in instructions
Ready to compare options? Visit Diesel Exhaust Manifolds, Turbo Systems, or the Shop by Truck hub to jump straight to your platform.
Refine:
5.9 12V Cummins | 1989 – 1993
5.9 12V Cummins | 1994 – 1998
5.9 24V Cummins | 1998.5 – 2002
3rd Gen 5.9 Cummins | 2003 – 2007
4th Gen 6.7 Cummins | 2007.5 – 2012
4th Gen 6.7 Cummins | 2013 – 2018
5th Gen 6.7 Cummins | 2019 – 2024
4BT Cummins
Frequently Asked Questions
Diesel Power Source offers performance turbochargers, compound turbo kits, exhaust manifolds, add-a-turbo systems, intake and airflow upgrades, and supporting hardware for Dodge Ram Cummins trucks. These parts are designed to improve power, drivability, and reliability in both street and work-truck applications.
Typical EGT reductions: 150-300°F depending on turbo configuration and load.
Real-world towing improvements:
Stock turbo baseline:
- Towing 18,000 lbs up 6% grade: 1,350-1,475°F typical
- Towing 22,000 lbs up 7% grade: 1,425-1,550°F (danger zone)
- Driver often backing out of throttle or downshifting to manage heat
After S300 single turbo upgrade:
- Same 18,000 lbs load: 1,150-1,250°F (150-200°F cooler)
- Same 22,000 lbs load: 1,225-1,325°F (200°F cooler)
- Can maintain highway speed without excessive heat
After compound turbo upgrade:
- Same 18,000 lbs load: 1,025-1,125°F (250-325°F cooler)
- Same 22,000 lbs load: 1,100-1,200°F (275-350°F cooler)
- Complete confidence on any grade, any load
Why this matters for engine life:
- Head gasket stress: Every 100°F over 1,300°F dramatically increases failure risk
- Manifold cracking: Repeated thermal cycling above 1,400°F causes cracks
- Turbo longevity: Sustained high EGTs shorten turbo bearing life
- Overall reliability: Cooler operation = longer engine life, period
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:
- Primary (small) turbo: Mounted on manifold, spools instantly, provides low-end response
- Secondary (large) turbo: Mounted downstream, takes air from primary and compresses again, adds massive top-end airflow
- Result: Quick spool like small turbo + huge airflow like big turbo = no compromises
Compound advantages over single turbo:
- No lag: Primary handles instant response, you're in boost from idle
- Better EGTs: 200-300°F cooler vs. 150-200°F with singles
- Lower drive pressure: Two turbos sharing work = less backpressure = less cylinder stress
- More usable power: 700 HP from compounds is drivable daily; 700 HP from S480 single is laggy and frustrating
- Best for towing: Instant response when you need it, massive power when you want it
Compound disadvantages:
- Higher cost: $4,500-7,500 vs. $2,500-4,000 for singles
- More complex install: Two turbos to mount and plumb (12-20 hours vs. 6-10)
- More piping: Additional intercooler piping, more potential leak points
When to choose compounds:
- Heavy towing (18k+ lbs) regularly or commercially
- Want 600-800+ HP that's drivable daily
- Need absolute best EGT control
- Mountain terrain or sustained high-load operation
- Refuse to compromise between response and power
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.
