Best Mods For 6.7 Cummins (2024 Updated)

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If you're a Cummins enthusiast, you probably already know the immense potential of the 6.7-liter Cummins engine. It's a powerful machine that can benefit from the right modifications. However, with so many products and brands on the market, it can be challenging to decide which mods will work best for your 6.7 Cummins.

To help you out, we've put together a short guide on the key points you should consider when looking for the best mods for your 6.7 Cummins. Here are the five points to keep in mind:

1. Know your goals: Are you looking for more horsepower, torque, or better fuel efficiency? Your goals will determine the type of modifications you should focus on.

2. Quality: Always opt for high-quality products from reputable brands. Cheap products may save you money upfront, but they can cause long-term damage to your engine.

3. Compatibility: Make sure the mods you choose are compatible with your 6.7 Cummins engine. Not all products are designed to work with every engine model.

4. Installation: Some modifications require professional installation, while others can be done at home. Consider your skill level and the complexity of the installation before making a purchase.

5. Budget: Mods can range from a few hundred to thousands of dollars. Set a budget and stick to it. Remember, the most expensive mods may not always be the best ones for your needs.

By keeping these key points in mind, you'll be able to find the best mods for your 6.7 Cummins engine. Whether you're looking for better performance, fuel efficiency, or just want to customize your ride, there's a mod out there that's perfect for you.

10 Best Mods For 6.7 Cummins

1. Mishimoto Transmission Oil Cooler For Dodge Ram Cummins 2500/3500 5.9l/6.7l 03-09.

The Mishimoto MMTC-RAM-03SL Automatic Transmission Oil Cooler is a top-quality product designed for the Dodge Ram Cummins 2500 / 3500 5.9L / 6.7L models between the years 2003-2009. This product is perfect for individuals who need to maintain the optimal temperature of their transmission oil, ensuring that their vehicle operates at the highest level of efficiency.

This transmission oil cooler offers an impressive 59% increase in fin surface area, making it one of the most efficient and reliable coolers on the market. The stacked-plate design of the cooler allows for tough and reliable cooling, making it ideal for those who use their vehicles for heavy-duty work.

Additionally, the Mishimoto MMTC-RAM-03SL Automatic Transmission Oil Cooler comes equipped with a fully serviceable thermostat that ensures fast warm-up in cold climates. The thermostat bypass also allows for constant cooling in hot climates, making it a versatile product that can be used in a variety of environments.

One of the standout features of this product is its compatibility with all 2003-2009 Dodge Ram 5.9L & 6.7L Cummins models. This makes it an excellent choice for anyone who owns a Dodge Ram from this era and is looking to upgrade their transmission oil cooler.

Overall, the Mishimoto MMTC-RAM-03SL Automatic Transmission Oil Cooler is a top-quality product that is perfect for anyone who needs to maintain the optimal temperature of their transmission oil. Its impressive fin surface area, stacked-plate design, and fully serviceable thermostat make it one of the best coolers on the market, and its compatibility with all 2003-2009 Dodge Ram 5.9L & 6.7L Cummins models makes it an excellent choice for anyone looking to upgrade their transmission oil cooler.

2. Innovative Products Of America – Light Ranger Mutt (9101)

The Innovative Products of America – Light Ranger Mutt (9101) is a powerful and versatile tool designed to test trailer harnesses of different types. This product is perfect for those who need to troubleshoot or diagnose issues with their trailer wiring, whether for personal or commercial use.

One of the great features of the Light Ranger Mutt is its ability to test 7-spade, 6-round and 4/5-flat pin type trailer harnesses. This means that it can work with a wide range of trailers, making it a valuable tool for anyone who works with different types of trailers.

The Light Ranger Mutt also comes equipped with short circuit protection, which helps to prevent damage to the unit or the trailer being tested. This means that you can use it confidently without worrying about causing any harm.

Another useful feature of the Light Ranger Mutt is its turn signal simulation and power verification LED. This allows you to test the turn signals, brake lights, and other electrical components of the trailer without having to hook it up to a vehicle. This feature is especially helpful for those who work with trailers that are not currently connected to a vehicle.

The Light Ranger Mutt also comes with a trickle charger and trailer plug adapter, which makes it easy to keep the unit charged and ready to use. The water-resistant design of the Light Ranger Mutt also means that it can be used in a variety of weather conditions, making it a versatile tool for anyone who needs to test trailer wiring.

Finally, the Light Ranger Mutt has an internal battery compartment, though the battery is not included. This makes it easy to replace the battery when needed, ensuring that the unit is always ready to use.

Overall, the Innovative Products of America – Light Ranger Mutt (9101) is a valuable tool for anyone who needs to test trailer wiring. Its ability to work with different types of trailer harnesses, short circuit protection, turn signal simulation, and water-resistant design make it a versatile and reliable tool for any job.

3. Etl 2013-2017 Dodge Ram Cummins 6.7l Intercooler Kit Black

The ETL 2013-2017 Dodge Ram Cummins 6.7L Intercooler Kit in black is an essential upgrade for Dodge Ram Cummins owners who want to improve the performance and efficiency of their vehicle. This intercooler kit is designed to lower exhaust gas temperatures, which reduces stress on the engine and increases turbo life.

The intercooler kit is more efficient than the stock intercooler, thanks to its bar and plate construction. This construction provides a larger surface area for air to pass through, which results in better cooling and improved performance. With the ETL intercooler kit, you can expect to see improvements in horsepower, torque, and fuel economy.

The ETL intercooler kit is also vehicle-specific, which means it is designed to fit perfectly on 2013-2017 Dodge Ram Cummins 6.7L models. This ensures that installation is easy and hassle-free, and that the intercooler kit will work seamlessly with your vehicle's existing systems.

One of the major benefits of the ETL intercooler kit is that it reduces exhaust gas temperatures. When exhaust gas temperatures are high, it can cause damage to the engine and turbocharger. By lowering these temperatures, the intercooler kit helps to extend the life of your engine and turbocharger, and reduce the risk of costly repairs.

The ETL intercooler kit is also designed to reduce stress on the engine. When the engine is under stress, it has to work harder to produce power, which can lead to decreased performance and reduced fuel economy. By reducing stress on the engine, the intercooler kit helps to improve performance and fuel economy, and ultimately save you money in the long run.

Overall, the ETL 2013-2017 Dodge Ram Cummins 6.7L Intercooler Kit in black is a must-have upgrade for any Dodge Ram Cummins owner. Its bar and plate construction, vehicle-specific fit, and ability to lower exhaust gas temperatures and reduce stress on the engine make it an excellent choice for improving the performance and efficiency of your vehicle.

4. Boost Your Dodge Ram's Performance With K&n Cold Air Intake Kit – Compatible With 6.7l, L6, 2007-2009 Ram (2500, 3500) – Increases Horsepower Up To 21hp – 57-1557.

The K&N Cold Air Intake Kit is a high-performance upgrade for the 6.7L, L6, 2007-2009 Dodge Ram 2500 and 3500 models. It is designed to improve your vehicle's acceleration, towing power, and overall horsepower and torque. With a guaranteed increase in horsepower up to 21HP and up to 43 ft.lbs. of torque, the K&N cold air intake system provides a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine.

One of the standout features of the K&N Cold Air Intake Kit is its signature, reusable air filter. This filter combines 6 layers of pleated, breathable cotton with K&N's red filter oil to absorb dirt and dust particles, allowing clean air to continue flowing into your engine. This means that the filter only needs cleaning every 100,000 miles under normal highway driving conditions. The filter's design also allows your engine to breathe and sound as it should, creating a growling sound on acceleration that returns to a quiet hum once at speed.

The K&N Cold Air Intake Kit is backed by dyno testing you can trust. K&N air intake horsepower/torque testing is performed on wheel-based dynamometers, and the reports are included with each intake system. This ensures that you can rely on the system's performance and results.

The K&N Cold Air Intake Kit is also designed to improve your vehicle's towing performance. The air intake kit improves acceleration and uphill performance when towing by improving throttle response and overall horsepower and torque. This means that you can tow with greater ease and confidence, knowing that your vehicle is equipped with the power it needs.

The K&N Cold Air Intake Kit is easy to install, with detailed, step-by-step instructions and all necessary parts included. The entire air intake system can typically be installed in less than 60 minutes with basic hand tools. Additionally, the durable roto-molded intake tube and custom heat shield help protect intake air from the high temperature of your engine bay, ensuring that your vehicle remains protected and functional for years.

Finally, the K&N Cold Air Intake Kit is proudly made in the USA for trusted quality and reliability. It is backed by US-based customer support and a No-Hassle Lifetime Limited Warranty that protects your vehicle for its entire life. With its premium engine protection, improved performance, and trusted brand, the K&N Cold Air Intake Kit is an excellent investment for any Dodge Ram owner.

5. Etl 242008 2013-2017 Dodge Ram Cummins 6.7l Intercooler Kit

The ETL 242008 Intercooler Kit is an excellent upgrade for owners of 2013-2017 Dodge Ram Cummins 6.7L trucks who are looking to improve their vehicle's performance. This direct stock replacement kit is designed to efficiently cool the air that enters the engine, resulting in improved horsepower and torque.

Constructed using bar and plate technology, this intercooler kit is manufactured to the highest standards of quality and durability. The bar and plate construction is known for its exceptional cooling capacity, as it allows for a large surface area for heat transfer. This means that more heat is dissipated from the air before it enters the engine, resulting in a cooler, denser air charge.

The ETL 242008 Intercooler Kit is designed to be a vehicle-specific upgrade. This means that it has been engineered to fit perfectly with 2013-2017 Dodge Ram Cummins 6.7L trucks. As a result, installation is easy and hassle-free, and the intercooler kit will work seamlessly with the vehicle's existing systems.

One of the key benefits of this intercooler kit is its ability to improve performance over the stock intercooler. By reducing the temperature of the air entering the engine, the kit is able to increase horsepower and torque. This results in improved acceleration, better towing capacity, and an overall more responsive driving experience.

In summary, the ETL 242008 Intercooler Kit is an outstanding upgrade for owners of 2013-2017 Dodge Ram Cummins 6.7L trucks who are looking to improve their vehicle's performance. With its bar and plate construction, vehicle-specific design, and ability to improve performance over the stock intercooler, this kit is a must-have for any serious truck enthusiast.

6. 3-Row All-Aluminum Radiator For 2003-2010 Dodge Ram Pickup With Cummins Engines.

The ALLOYWORKS 3 Row All Aluminum Radiator is a high-quality aftermarket radiator designed for use in 2003-2010 Dodge Ram 2500, 3500, 4000, 4500, and 5500 pickup trucks with 5.9L and 6.7L Cummins engines. This radiator is an excellent upgrade for those looking to improve their vehicle's cooling efficiency and overall performance.

Constructed from full T-6061 aluminum, this radiator is built to last and withstand even the most extreme driving conditions. The core size measures 27.0"x 28.1", while the overall size is 35.5" x 30.5" x 2‘’. The inlet and outlet measure 1.97" each, ensuring a perfect fit for your vehicle.

This radiator is an excellent replacement for your stock radiator, offering superior cooling performance and a longer lifespan. It is also an ideal choice for those who frequently tow heavy loads or drive in hot climates, as it is designed to handle high temperatures and heavy workloads.

The ALLOYWORKS 3 Row All Aluminum Radiator is compatible with a variety of Dodge Ram part numbers, including CH3010304, 52028900AD, 55056816AA, and 8012711. It also features an interchange part number of 2711 CU2711 RAD2711 DPI2711.

Before purchasing this radiator, it is essential to ensure that it is the correct size for your vehicle. The core size, overall size, and inlet/outlet measurements listed above should be checked against your vehicle's specifications to ensure a proper fit.

In summary, the ALLOYWORKS 3 Row All Aluminum Radiator is an excellent aftermarket upgrade for 2003-2010 Dodge Ram 2500, 3500, 4000, 4500, and 5500 pickup trucks with 5.9L and 6.7L Cummins engines. Its high-quality construction, superior cooling performance, and compatibility with various Dodge Ram part numbers make it an ideal choice for those looking to improve their vehicle's performance and longevity.

7. Gates 90k-38285 Complete Serpentine Belt Drive Component Kit

The Gates 90K-38285 Complete Serpentine Belt Drive Component Kit is an all-in-one solution to prevent premature vehicle breakdowns and save money on repairs. Neglecting to replace the tensioner and pulley(s) at the same time as the belt can lead to a shorter belt lifespan and other front-end accessory drive component failure, leaving the driver stranded on the side of the road.

Recognizing the importance of getting your vehicle running smoothly, Gates has created a convenient, time-saving solution with their Complete Serpentine Kits. These kits provide customers with all the premium parts needed to completely restore their serpentine belt drive system in one pre-packaged, easy-to-use kit.

By making the choice to fix your vehicle right the first time with the Gates 90K-38285 Complete Serpentine Belt Drive Component Kit, you can avoid the hassle and expense of multiple repairs. This kit includes everything needed to ensure a long-lasting and reliable serpentine belt drive system, including a high-quality belt, tensioner, and pulley(s).

Gates is a trusted name in the automotive industry, and their reputation for quality and reliability is evident in every product they offer. Their Complete Serpentine Kits are no exception, providing the same level of excellence that customers have come to expect from this industry leader.

In summary, the Gates 90K-38285 Complete Serpentine Belt Drive Component Kit is an essential investment for anyone looking to keep their vehicle running smoothly and reliably. With all the necessary parts included in one easy-to-use kit, customers can save time and money while ensuring the longevity of their vehicle's serpentine belt drive system.

8. Professional-Grade Heavy-Duty Truck Scanner With Dpf Regen For Major Brands, Including Cummins, Detroit, Caterpillar, International, Volvo, And Paccar. Features All-System Obd2 Scanning, Diesel Diagnostics, And Oil Reset. New 2022 Version.

The ANCEL HD3300 Plus Heavy Duty Truck Scanner is a powerful and comprehensive diagnostic tool designed for diesel engines. With its advanced DPF regeneration function, it can detect and correct issues related to Cummins, Detroit, Caterpillar, International, Volvo, Paccar, Isuzu, and Fuso engines. The scanner also includes a range of other features, such as DPR forced regeneration, differential pressure detection, automatic regeneration control, and soot and ash ratio reset.

In addition to its DPF functions, the ANCEL HD3300 Plus also supports OEM-level oil reset for ISUZU and FUSO engines. This feature helps to reset the Oil Life Reminder, ensuring that the vehicle continues to run smoothly and safely. The scanner can also perform all-system scans of heavy-duty trucks, including Engine, ABS/EBS, Transmission, Body Controller, and Chassis Controller, among others. It can read and erase trouble codes, turn off the MIL, and show live data stream of multiple sensors in graph and text format.

The ANCEL HD3300 Plus is designed with user-friendly features, such as one-click screenshot, update, printing, feedback, and test report creation. It also includes a "Simulation Mode" and "Demo Mode" to help users understand the diagnostic procedures. The scanner also includes a Pin Detect function, which is used to diagnose the connection status of the OBD interface and detect whether the pins are damaged.

To ensure that the scanner is always up-to-date, ANCEL offers a lifetime free update policy. The R&D team is constantly improving the software and updating the database, and users can easily get the latest version via internet update without any extra cost.

As an added bonus, ANCEL is offering a BST200 battery tester valued at $41.99 and an ANCEL Official Protective Case valued at $31.99 for free with the purchase of the scanner. Additionally, customers can save 50% on ANCEL Exclusive Printer when they purchase one or more HD3300. If customers are unsure whether the product is compatible with their truck, ANCEL recommends consulting with their team in advance.

Overall, the ANCEL HD3300 Plus Heavy Duty Truck Scanner is a powerful and versatile diagnostic tool that can help truck owners and mechanics keep their vehicles running smoothly and efficiently.

Best Mods For 6.7 Cummins FAQs

Is a tuner or programmer the best mod for increasing horsepower and torque in a 6.7 Cummins?

Both tuners and programmers can increase horsepower and torque in a 6.7 Cummins. However, which one is the best mod for you depends on your goals and preferences.

Tuners are designed to recalibrate the engine's electronic control module, which allows you to adjust various parameters, such as fuel delivery, timing, and boost pressure, to optimize performance. This can lead to significant gains in horsepower and torque, as well as improved throttle response and fuel efficiency.

Programmers, on the other hand, offer similar benefits but with more flexibility and customization options. They allow you to modify the engine's parameters in real-time, which means you can adjust them on the fly and fine-tune your settings for optimal performance.

Ultimately, both tuners and programmers can increase horsepower and torque in a 6.7 Cummins, but the best mod for you depends on your specific needs and preferences. We recommend consulting with a professional mechanic or tuner for personalized advice on which option will work best for you.

What are the benefits of installing a cold air intake on a 6.7 Cummins?

Installing a cold air intake on a 6.7 Cummins can provide several benefits. The first and most significant advantage is increased engine performance due to improved airflow. Cold air intakes allow more cool, dense air to enter the engine, resulting in a more efficient combustion process and increased horsepower and torque. Additionally, a cold air intake can improve fuel economy by reducing the engine's workload and allowing it to operate more efficiently. Cold air intakes also help to protect the engine by filtering out harmful contaminants and preventing them from entering the engine. Finally, they can enhance the appearance of the engine bay by providing a sleek and stylish look. Overall, installing a cold air intake is an excellent way to improve the overall performance and longevity of a 6.7 Cummins engine.

What are the top performance mods for a 6.7 Cummins engine?

The 6.7 Cummins engine is already known for its impressive performance, but there are a few modifications that can take it to the next level. The top performance mods for this engine include a performance tuner, cold air intake, exhaust system, and upgraded turbocharger.

A performance tuner reprograms the engine control module to optimize fuel delivery and increase horsepower and torque. A cold air intake system allows more cool air to flow into the engine, which can improve combustion and increase power. An upgraded exhaust system, such as a high-flow or straight pipe system, can increase exhaust flow and improve overall engine efficiency. Lastly, an upgraded turbocharger can provide more boost pressure to the engine, resulting in increased horsepower and torque.

Overall, these performance mods can significantly increase the power and performance of a 6.7 Cummins engine. However, it is important to note that these modifications may void the manufacturer's warranty and may not be legal in all areas.

What suspension upgrades are recommended for a 6.7 Cummins to improve off-road performance?

To improve off-road performance of a 6.7 Cummins, the following suspension upgrades are recommended:

1. Lift Kits: Adding a lift kit will increase ground clearance, allowing for larger tires and better off-road performance.

2. Upgraded Shocks: Upgraded shocks can increase the truck’s stability on rough terrain, providing better control and comfort.

3. Sway Bars: Anti-sway bars can help reduce body roll, increasing stability and control on uneven terrain.

4. Steering Stabilizers: Steering stabilizers can absorb shock and vibration, improving steering control and reducing steering wheel wobble.

5. Traction Bars: Traction bars can reduce axle wrap and wheel hop, providing better traction and stability on steep inclines and rough terrain.

6. Heavy Duty Springs: Heavy-duty springs can increase load capacity and improve the truck's overall stability and performance off-road.

Overall, these suspension upgrades will help your 6.7 Cummins perform better off-road, providing better stability, control, and traction on rough terrain.

Which aftermarket exhaust system is the best for a 6.7 Cummins?

MBRP offers a range of exhaust systems that are designed to provide improved performance and sound. Diamond Eye is known for its high-quality stainless steel construction and affordable prices. AFE is a popular choice among truck enthusiasts for its advanced airflow technology and improved fuel efficiency. Flo-Pro is also a top-rated brand that offers a variety of exhaust systems for the 6.7 Cummins.

Ultimately, the best exhaust system for your truck depends on your personal preferences and your specific needs. Consider factors such as performance, sound, construction, and price when choosing the right system for your 6.7 Cummins. It's also recommended to consult with a professional mechanic or truck specialist to ensure that you make an informed decision.

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