The difference between a reliable rig and a roadside headache is proper component clearance during your build. You need parts that fit exactly as intended to prevent heat soak and fluid leaks under pressure.
Choosing the Best Compound Turbo Setups for 6.7 Cummins requires focusing on how these systems integrate with your factory emissions and mounting points. If you get the geometry wrong now, you will pay for it with burnt wires and wasted time later.
Key Takeaways
- Prioritize high quality steel lines that handle the extreme thermal cycles found in compound configurations.
- Verify that your actuator electronics communicate clearly with the factory engine computer to prevent frequent limp modes.
- Ensure all drain tube kits provide enough gravity slope to keep oil moving away from the turbo bearings efficiently.
- Choose assemblies that include pre-calibrated modules to save hours of manual tuning during the installation phase.
- Always check that your specific model year aligns with the electronic connection type on the replacement turbo assembly.
| Clearance Problem Solver |  |
Diesel Power Source A/C Line Kit | Perfect for compound clearance | Direct fit design | High quality construction | View on Amazon | Read Review |
| Reliable Factory Replacement |  |
Holset HE300VG Turbocharger Assembly | Includes pre-installed actuator | OE performance standards | Direct bolt-on fit | View on Amazon | Read Review |
| Standard Operational Upgrade |  |
Holset HE300VG Turbocharger Replacement | Factory spec performance | Includes electronic actuator | Wide compatibility | View on Amazon | Read Review |
| Versatile Heavy Duty |  |
HE300VG Turbocharger with Actuator | Wide chassis compatibility | Ready to install | Reliable turbine performance | View on Amazon | Read Review |
| Precise Electronic Control |  |
6.7 Cummins Turbo Actuator Kit | Includes calibration kit | Restores VGT function | Specific to 6.7 Cummins | View on Amazon | Read Review |
| Intelligent Self-Correction |  |
Automatic Calibration Turbo Actuator | Self-calibrating technology | Easy installation process | Compatible with factory VGT | View on Amazon | Read Review |
| Critical Oil Management |  |
Fleece Performance Turbo Drain Tube | Durable construction | Specifically for modified turbos | Prevents oil leaks | View on Amazon | Read Review |
| Reliable Electronic Replacement |  |
VGT Turbocharger Actuator Kit | Automatic calibration included | Direct electronic replacement | Compatible with VGT | View on Amazon | Read Review |
| Enhanced System Calibration | Upgrade Turbocharger Actuator Kit | Includes turbine calibration module | Improves boost response | Direct electronic fit | View on Amazon | Read Review | |
| Complete System Overhaul |  |
Holset HE300VG Turbo Assembly | Complete turbo assembly | Includes pre-installed actuator | OE factory performance | View on Amazon | Read Review |
More Details on Our Top Picks
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Diesel Power Source A/C Line Kit
When you transition to a compound setup or perform a second-gen swap, space becomes your biggest enemy. This kit provides the critical clearance needed to keep your air conditioning lines away from the hot, expanded turbo plumbing. It is a necessary addition for anyone who wants a clean installation without risking line damage from vibrating contact.
Keep in mind that while these lines are robust, they require careful routing during the swap process. You will appreciate the OEM-quality fittings that ensure a leak-free connection under high pressure.
- Brand Name:Diesel Power Source
- Component Type:A/C Line Relocation
- Model Year:2010-2018
- Included Accessories:Lines and fittings
- Additional Feature:Engineered for compound turbo setups
- Additional Feature:Prevents line interference
- Additional Feature:American made durability
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Holset HE300VG Turbocharger Assembly
If your existing turbocharger is showing its age or failing under the strain of daily driving, this unit brings your engine back to factory specifications. It includes the essential electronic actuator, which is the heart of your truck's variable geometry system. This assembly is ideal for those who prefer to maintain stock performance characteristics while ensuring long-term reliability.
You should consider this if your actuator has reached the end of its service life. The direct compatibility with your truck's existing wiring harness makes for a straightforward installation process.
- Brand Name:Holset
- Component Type:Turbocharger Assembly
- Model Year:2013-2018
- OE Compatibility:68321378AA
- Additional Feature:Variable geometry functionality
- Additional Feature:Precision calibrated assembly
- Additional Feature:Integrated electronic controls
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Holset HE300VG Turbocharger Replacement
This turbocharger acts as a direct swap for the 2013 through 2018 6.7L Cummins, mirroring the factory setup perfectly. It is the go-to choice for owners who need a reliable engine component without the need for custom tuning or complex fabrication. The inclusion of the actuator saves you from the headache of sourcing one separately.
Be aware that like all VGT units, this requires a healthy oil feed and drain system to operate smoothly. It provides the consistent boost delivery you expect from your diesel engine.
- Brand Name:Holset
- Component Type:Turbocharger Assembly
- Model Year:2013-2018
- OE Compatibility:5326055HX
- Additional Feature:Precision turbine balancing
- Additional Feature:Integrated VGT hardware
- Additional Feature:Direct OE replacement
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HE300VG Turbocharger with Actuator
This assembly is engineered to fit a wide range of Ram chassis, making it a flexible option for various truck configurations. It comes with the electric actuator pre-attached, which simplifies the transition from your old, worn-out unit. It is an excellent choice for maintaining engine longevity in heavy-duty applications.
The build quality is consistent with industry standards for the ISB platform. You get dependable throttle response that helps your truck pull heavy loads with ease.
- Brand Name:Holset
- Component Type:Turbocharger Assembly
- Model Year:2013-2018
- OE Compatibility:3775426
- Additional Feature:High performance housing
- Additional Feature:Pre-calibrated actuator
- Additional Feature:Heavy duty construction
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6.7 Cummins Turbo Actuator Kit
Often, the turbo itself is fine, but the electronic actuator fails, leaving you with a truck that feels sluggish. This kit offers a cost-effective solution by providing just the actuator, complete with a calibration tool. It is perfect for the DIY mechanic who wants to restore boost control without replacing the entire turbocharger assembly.
The provided calibration software is a nice touch, as it ensures the actuator communicates correctly with your truck's computer. It brings smooth boost transitions back to your driving experience.
- Brand Name:Holset
- Component Type:Turbo Actuator
- Model Year:2013-2018
- Included Accessories:Calibration kit
- OE Compatibility:5494878RX
- Additional Feature:Automatic calibration capability
- Additional Feature:Corrects electronic boost lag
- Additional Feature:High grade housing
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Automatic Calibration Turbo Actuator
This actuator distinguishes itself with its automatic calibration feature, which removes the guesswork often associated with installing electronic turbo components. It acts as a smart interface between your engine management system and the VGT turbine. This is an ideal component for users who value a time-saving installation.
It is designed to handle the specific electrical demands of the 2013-2018 Ram diesel systems. You will notice a return to the crisp acceleration that define a properly functioning Cummins engine.
- Brand Name:Holset
- Component Type:Turbo Actuator
- Model Year:2013-2018
- OE Compatibility:5494878RX
- Additional Feature:Plug and play functionality
- Additional Feature:Intelligent feedback loop
- Additional Feature:Weather resistant casing
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Fleece Performance Turbo Drain Tube
When you run a compound turbo system, the drain path for your oil becomes much more complex. This drain tube kit is built to provide a secure oil return, preventing the leaks that can occur with modified plumbing. It is a foundational piece for any custom turbo build where the factory drain tube will no longer fit.
The durability of this kit ensures that you won't have to worry about oil starvation under high engine loads. It provides the peace of mind that your investment is properly lubricated.
- Brand Name:Fleece Performance
- Component Type:Turbo Drain Tube
- Model Year:2007-2018
- Additional Feature:Optimized flow design
- Additional Feature:High heat resistance
- Additional Feature:Engineered for tight spaces
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VGT Turbocharger Actuator Kit
This actuator kit is designed to provide a seamless replacement for your failing factory unit. By focusing on the electronics, it gives you a way to fix boost issues without paying for parts you do not need. It is highly recommended for owners experiencing erratic boost levels caused by a faulty actuator motor.
The inclusion of automatic calibration makes this a user-friendly choice for those working in their own garages. It is a solid performer that gets your turbo back in sync with your engine.
- Brand Name:Holset
- Component Type:Turbo Actuator
- Model Year:2013-2018
- OE Compatibility:5494878RX
- Additional Feature:Precision electronic control
- Additional Feature:Fast setup time
- Additional Feature:Sturdy internal components
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Upgrade Turbocharger Actuator Kit
This kit goes beyond a basic replacement by including a turbine calibration module, which helps you fine-tune the performance of your VGT system. It is perfect for those who want a bit more control over how their turbo responds to throttle input. You can expect a smoother power curve once the system is properly synced.
It fits the standard 6.7L Cummins turbine housing perfectly. The build feels solid, providing the thermal protection needed for daily operation under the hood.
- Brand Name:Holset
- Component Type:Turbo Actuator
- Model Year:2013-2018
- Included Accessories:Calibration module
- Additional Feature:Advanced electronic feedback
- Additional Feature:Optimized VGT performance
- Additional Feature:High durability materials
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Holset HE300VG Turbo Assembly
For those who want a comprehensive solution, this assembly combines the turbocharger and the actuator into one package. It is the equivalent of a factory fresh start for your engine's induction system. This is the standard choice for professional shops performing high-quality repairs on 2013-2018 trucks.
By replacing both the mechanical and electronic sides of the turbo at once, you eliminate the risk of mismatched parts. You get factory-grade efficiency that keeps your truck running like the day it left the assembly line.
- Brand Name:Holset
- Component Type:Turbocharger Assembly
- Model Year:2013-2018
- OE Compatibility:5326055HX
- Additional Feature:Integrated VGT actuator
- Additional Feature:Factory balanced turbine
- Additional Feature:Precision induction engineering
Frequently Asked Questions
Will a compound setup make my truck harder to drive every day?
Not if you choose the right sizing. A well-tuned compound system actually provides smoother power delivery than a single large turbo, which tends to suffer from significant lag. You will notice much better throttle response when pulling away from a stoplight.
Do I need to upgrade my head studs for this?
Yes, you absolutely should. Increased boost pressures put immense strain on the cylinder head seal, and factory bolts are prone to stretching under these conditions. Installing heavy-duty head studs is a necessary insurance policy against a blown head gasket.
How much horsepower can I realistically expect?
Most street-oriented compound kits will support between 600 and 800 horsepower depending on your fueling setup. If you push beyond these numbers, you start entering the territory of built engines and serious driveline upgrades. Be honest about your goals before you spend the money.
Can I keep my exhaust brake with a compound kit?
Most modern kits integrate an exhaust brake by using a wastegate control system or by retaining the function of the secondary turbo. You should confirm the electronic compatibility with your specific tuner before finalizing your purchase. Losing your exhaust brake can be a major inconvenience if you tow heavy loads.
Is it necessary to replace the transmission?
If you have an automatic, the stock transmission will struggle with the instant torque provided by compounds. You should budget for a built transmission or at least a high-performance torque converter to manage the power. A manual transmission will also need a performance clutch to prevent slipping.
