10 Best 2nd Gen Swap Kit 6.7 Cumminses in 2026

Why settle for stock performance when you can rebuild your engine for better flow and reliability? A clean swap requires precision parts that handle the extreme heat of your diesel engine.

Finding the Best 2nd Gen Swap Kit 6.7 Cumminses components matters more than the installation itself. Quality hardware acts like the foundation of a house, keeping everything stable under boost. Read on to see which kits earn a spot on your build.

Key Takeaways

  • Prioritize stainless steel construction for oil feed lines to prevent heat fatigue and potential leaks.
  • Ensure all drain tube kits match your specific turbo flange orientation to avoid alignment headaches.
  • Replace fragile factory quick-connect fittings with threaded adapters to stop common coolant leaks.
  • Opt for high-flow intake manifolds that remove restrictive factory grid heaters for better air volume.
  • Always bundle your essential filtration changes with your swap to protect the new components from debris.

Our Top Best 2Nd Gen Swap Kit 6.7 Cumminses Picks

Essential Swap Foundation Turbo Drain Tube Swap Kit Turbo Drain Tube Swap Kit High heat resistance Complete hardware set Simple installation process View on Amazon Read Review
Reliable Universal Fit Turbo Drain Tube 5.9/6.7L Turbo Drain Tube 5.9/6.7L Wide engine compatibility Leak resistant design Sturdy metal construction View on Amazon Read Review
Airflow Optimization Master Banks Monster-Ram Intake 42797-B Banks Monster-Ram Intake 42797-B Increased airflow capacity Improved throttle response Optimized air distribution View on Amazon Read Review
Polished Performance Upgrade Banks Monster-Ram Intake 42799-PC Banks Monster-Ram Intake 42799-PC Sleek powdercoat finish Exceptional airflow gains Durable build quality View on Amazon Read Review
Factory Maintenance Standard Mopar OEM Filter Bundle Mopar OEM Filter Bundle Guaranteed factory fit Reliable filtration media Complete maintenance set View on Amazon Read Review
Precision Intake Engineering Banks Monster-Ram Intake 42798-PC Banks Monster-Ram Intake 42798-PC High boost tolerance Reduced airflow turbulence Durable powdercoat finish View on Amazon Read Review
Temperature Control Expert Fleece Performance Coolant Bypass Fleece Performance Coolant Bypass Prevents cylinder head damage Improved thermal regulation High quality components View on Amazon Read Review
Essential Emissions Maintenance Replacement Crankcase Filter Kit Replacement Crankcase Filter Kit Restores ventilation efficiency Prevents oil contamination Complete replacement hardware View on Amazon Read Review
Leak Prevention Specialist Heater Hose Fitting Upgrade Heater Hose Fitting Upgrade Eliminates brittle plastic fittings Secure threaded connection Durable metal construction View on Amazon Read Review
High Flow Powerhouse Banks Monster-Ram 42799 Intake Banks Monster-Ram 42799 Intake Maximizes boost efficiency Improved combustion air density Robust construction View on Amazon Read Review

More Details on Our Top Picks

  1. Turbo Drain Tube Swap Kit

    Turbo Drain Tube Swap Kit

    Essential Swap Foundation

    View on Amazon

    This kit is your go-to solution for managing oil return during a 2nd Gen swap. It provides a durable stainless steel braided line that handles high heat better than factory rubber alternatives.

    The inclusion of all necessary connectors and mounting hardware removes the guesswork from your build. You will appreciate that it fits snugly without needing custom fabrication. Just keep in mind that the hose length is fixed, so verify your specific turbo orientation before installation.

    • Component Type:Oil drain line
    • Engine Fitment:6.7L Cummins
    • Kit Contents:Braided line, connectors, screws
    • Additional Feature:Stainless steel construction
    • Additional Feature:Flexible braided design
    • Additional Feature:Direct fitment connectors
  2. Turbo Drain Tube 5.9/6.7L

    Turbo Drain Tube 5.9/6.7L

    Reliable Universal Fit

    View on Amazon

    If you are moving between engine generations, this tube kit acts as a solid bridge for your oil drainage needs. It accommodates both 5.9L and 6.7L blocks, making it a versatile choice for builders working on multiple platforms.

    The rugged build quality ensures it won't leak under the intense pressures of a modified diesel engine. While the fit is broad, double check that your chosen turbo mounting position aligns with the provided tube geometry to avoid kinks.

    • Component Type:Turbo drain tube
    • Compatible Years:2003-2018
    • Engine Fitment:5.9L and 6.7L Cummins
    • Additional Feature:Compatible with Ram 2500/3500
    • Additional Feature:Simple bolt-on installation
    • Additional Feature:Heat tolerant materials
  3. Banks Monster-Ram Intake 42797-B

    Banks Monster-Ram Intake 42797-B

    Airflow Optimization Master

    View on Amazon

    Upgrading your intake is the easiest way to let your engine breathe. This Monster-Ram kit replaces restrictive factory piping to boost throttle response and lower internal temperatures significantly.

    The included Killer Grid Heater upgrade removes a common bottleneck in the stock air horn. This is a bulky piece of equipment, so ensure you have enough clearance in your engine bay before mounting.

    • Brand:Banks Power
    • Component Type:Intake manifold
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Includes Killer Grid heater
    • Additional Feature:High flow design
    • Additional Feature:Improved cylinder filling
  4. Banks Monster-Ram Intake 42799-PC

    Banks Monster-Ram Intake 42799-PC

    Polished Performance Upgrade

    View on Amazon

    This version of the Monster-Ram offers the same performance gains as the standard model but with a refined aesthetic finish. It is perfect if you want your engine bay to look as sharp as it runs.

    You get the same superior flow characteristics that help your diesel engine produce more power throughout the rev range. Be prepared for a bit of a project, as installing an intake manifold requires careful attention to gasket seating.

    • Brand:Banks Power
    • Component Type:Intake manifold
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Killer Grid heater included
    • Additional Feature:High-grade construction
    • Additional Feature:Enhanced under-hood appearance
  5. Mopar OEM Filter Bundle

    Mopar OEM Filter Bundle

    Factory Maintenance Standard

    View on Amazon

    Keeping your fuel system clean is the best insurance for a long engine life. This bundle provides genuine Mopar components that match the exact specifications of your 6.7L Cummins.

    Using original equipment filters ensures proper micron ratings and seals, which aftermarket units sometimes miss. This is a straightforward purchase for anyone who prefers sticking to manufacturer-approved maintenance intervals.

    • Brand:Mopar
    • Component Type:Filter kit
    • Compatible Years:2013-2019
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Includes oil filter
    • Additional Feature:Includes fuel filters
    • Additional Feature:OEM quality assurance
  6. Banks Monster-Ram Intake 42798-PC

    Banks Monster-Ram Intake 42798-PC

    Precision Intake Engineering

    View on Amazon

    When you push your 6.7L Cummins to higher boost levels, the stock intake manifold becomes a liability. This unit provides the structural integrity needed for high-performance applications while smoothing out the intake path.

    The air travels through this manifold like water through a polished pipe, reducing turbulence and increasing density. Note that the installation requires careful work around the fuel lines, so allow yourself plenty of time.

    • Brand:Banks Power
    • Component Type:Intake manifold
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Killer Grid heater included
    • Additional Feature:Optimized interior volume
    • Additional Feature:Direct bolt-on replacement
  7. Fleece Performance Coolant Bypass

    Fleece Performance Coolant Bypass

    Temperature Control Expert

    View on Amazon

    Managing heat is the secret to a long-lasting diesel, and this bypass kit is a critical cooling component. It helps regulate coolant flow to prevent localized hot spots within the engine block.

    This is a mandatory upgrade for anyone who works their truck hard or runs heavy tunes. The installation is somewhat technical, so it is best suited for those comfortable with cooling system maintenance.

    • Brand:Fleece Performance
    • Component Type:Coolant bypass
    • Compatible Years:2013-2018
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Protects against cavitation
    • Additional Feature:Regulates internal temperatures
    • Additional Feature:Built for heavy loads
  8. Replacement Crankcase Filter Kit

    Replacement Crankcase Filter Kit

    Essential Emissions Maintenance

    View on Amazon

    The crankcase filter is often overlooked until you see oil mist where it doesn't belong. This kit provides a direct replacement that restores your engine's ability to vent crankcase pressure properly.

    It includes the necessary mounting hardware and clamps, making the swap a clean affair. While simple, it is vital for keeping your intake tract and turbocharger free from oily buildup.

    • Component Type:Crankcase filter
    • Compatible Years:2007.5-2018
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Includes hose and bracket
    • Additional Feature:Essential maintenance part
    • Additional Feature:Easy installation process
  9. Heater Hose Fitting Upgrade

    Heater Hose Fitting Upgrade

    Leak Prevention Specialist

    View on Amazon

    Factory quick-disconnect fittings are notorious for failing at the worst possible time. This upgrade replaces those weak points with a sturdy -10AN connection, effectively stopping coolant leaks before they start.

    The conversion is a permanent fix that adds a layer of security to your cooling system. Once installed, the threaded connection is far more reliable than the plastic snap-on original.

    • Component Type:Hose fitting kit
    • Compatible Years:2007.5+
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Quick-disconnect delete
    • Additional Feature:Includes elbow and clamp
    • Additional Feature:High pressure tolerance
  10. Banks Monster-Ram 42799 Intake

    Banks Monster-Ram 42799 Intake

    High Flow Powerhouse

    View on Amazon

    This Monster-Ram variant delivers the raw airflow advantage your engine craves when you want to make serious power. By smoothing the transition into the cylinder head, it maximizes every pound of boost your turbo produces.

    Pairing this with the Killer Grid Heater makes it a comprehensive upgrade for your intake system. It is a substantial piece of hardware, so ensure your surrounding engine components are ready for the increased volume.

    • Brand:Banks Power
    • Component Type:Intake manifold
    • Engine Fitment:6.7L Cummins
    • Additional Feature:Includes Killer Grid heater
    • Additional Feature:Optimized flow path
    • Additional Feature:Increases engine power

Factors to Consider When Choosing Best 2Nd Gen Swap Kit 6.7 Cumminses

Manifold Material Integrity

Cast iron is the gold standard for these manifolds because it handles extreme thermal expansion without cracking. Look for high-silicon ductile iron that resists the intense heat cycling typical of a 6.7 Cummins. Avoid mild steel options, as they often warp or fail under the high pressures of a tuned engine.

Turbo Flange Compatibility

You must match your manifold flange to the turbocharger footprint you intend to run. Most kits offer T4 or T4i flanges, which dictate your future upgrade path. Choosing the wrong flange is like trying to fit a square peg in a round hole, so confirm your turbo model before purchasing.

Wastegate Port Inclusion

If you plan to run an external wastegate for better boost control, ensure the manifold includes a pre-machined port. Adding this later requires expensive machine work that can compromise the structural integrity of the casting. Prioritize a kit that offers a dedicated flange for your specific gate size.

Downpipe Fitment

The transition from the turbo outlet to the exhaust system is a common point of failure. A quality kit provides a precision-bent downpipe that clears the firewall and transmission tunnel without hitting other components. Verify the diameter matches your existing exhaust to maintain proper backpressure levels.

Hardware And Gaskets

High-quality kits include stainless steel studs and high-temp manifold gaskets as standard. Cheap hardware often stretches or snaps under load, leaving you with annoying exhaust leaks. Investing in a kit with premium fasteners saves you the headache of extracting broken bolts later.

Oil Feed Lines

Moving the turbocharger to the top mount position requires longer oil supply and drain lines. Ensure the kit includes braided stainless lines that are properly heat-shielded. Leaking oil lines are a major fire risk, so do not compromise on the quality of these critical connections.

Frequently Asked Questions

Why move to a second gen manifold setup?

The stock 6.7 Cummins manifold restricts flow and places the turbo in a position that limits your choice of performance upgrades. Moving to a top-mount configuration improves exhaust gas velocity and allows you to install much larger, more efficient turbochargers.

Will this kit fit my stock intake horn?

Most second gen swap kits require an aftermarket side-draft intake horn to clear the relocated turbo. The factory intake is simply too bulky for the new plumbing layout. You should budget for a new intake manifold to complete the installation.

Is tuning required after the swap?

Yes, changing the turbo location and size significantly alters your engine's air-to-fuel ratio. You must update your ECM tuning to match the new airflow characteristics. Running the truck without a proper tune can lead to high exhaust temperatures and potential engine damage.

What tools do I need for the installation?

You will need a comprehensive set of metric sockets, a high-quality torque wrench, and an exhaust manifold stud removal tool. The factory bolts are often seized, so having a penetrating oil and a torch on hand is essential. Expect to spend a full weekend if you are working in a home garage.

Can I keep my factory exhaust brake?

Most second gen kits are designed for racing or off-road turbos that do not have integrated exhaust brakes. If you need an exhaust brake for towing, you must select a turbo that is specifically designed with that feature. Otherwise, you will need to install an inline brake further down the exhaust system.

James Wilson
James Wilson

James Wilson is the lead writer at MediLab Zone, where he researches and reviews health, wellness, and personal care products to help readers make informed decisions. James has a keen eye for quality, safety, and value, and takes a careful, detail-oriented approach to every buying guide he puts together. He believes that choosing the right wellness product shouldn't require a medical degree, and he's committed to keeping his content clear, current, and genuinely useful. (Note: James is not a medical professional, and his content is intended for general informational purposes only.)

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