Does your powerful 6.7L Cummins engine feel like it’s holding back? Maybe you notice slow response when you push the pedal, or perhaps you dream of higher towing capacity for those steep grades. The Variable Geometry Turbocharger (VGT) is the heart of that performance, but choosing the right replacement or upgrade for your engine can feel like navigating a maze of confusing specs and brand names.
Many truck owners face frustration when their stock turbo starts lagging or wears out. Upgrading seems simple, but selecting a VGT that balances quick spool-up with top-end power—without breaking the bank—is a real challenge. Getting it wrong means wasted money and continued disappointment under the hood.
This guide cuts through the noise. We will break down exactly what makes a great VGT for your 6.7L Cummins. You will learn the key differences between top models, what features truly matter for towing and daily driving, and how to select the perfect turbo to unleash your truck’s full potential. Keep reading to transform sluggish performance into reliable, exciting power.
Top Vgt Turbo For 6.7 Cummins Recommendations
- 【Applicable objects】: The Turbo Actuator Holset HE300VG HE351VE Fits for 2013 2014 2015 2016 2017 2018 Dodge Ram 2500 3500 4500 5500 ISB 6.7L Diesel.
- 【Suggested Purchase】:If You Have Acuator Codes , Under light throttle and some load it drops boost and sounds like the exhaust break comes on.You need to replace it in time to restore drivability , our turbo actuators are made of High Quality & Durable Material. Tested & certified to meet or exceed OEM quality standards.The price is only a small part of the dealer !
- 【Upgrade Materials】: The included Turbine Calibration Module with our written instructions will make this job a breeze. With the new Actuator , the turbo will work better than before the throttle will be significantly more responsive and will prevent the occasional noise from affecting your driving mood .This is a powerful actuator that will last for a long time.
- 【OE#】: Turbo actuator Number : 3787604 3781632 5601240NX, 3794756, 3775439, 3787608,3781633,3779986,3798539, 37985, 3794758, 3775427,3787607, 3781755, 3779987 ,5326054, 3781754, 3775426,3779989, 3784573, 3784574, 68307025AA, 3798575,5326054,5326057,5327046,532704600,532704600HX,5459710RX,68210648AA, 68212738AA, 68245792AA,68253983AA, 68295438AA, 68297874AA, 68321377AA, 68445522AA
- 【Thoughtful after-sales】: Turbo Actuator came with attachment screw hardware and an alignment pin plus the full gasket kit were included . We offer 10 years of after-sales service . If there is any problem with the product If there is any problem with the product, you can contact us, we believe we will give you a good solution, and thank you for helping us to do better. Don't hesitate, maybe you need it.
- 【Important Note！】For the 2018 and later models, please be aware that the actuator will not program using the provided instructions. To ensure proper functionality, you will need a "security bypass OBD2 cable," which can be purchased from Amazon. Without this cable, the programming module may become unresponsive and get stuck in calibration mode. After obtaining and installing the bypass cable, which takes about five minutes, the programmer worked as intended.
- 【Product Model】The Ram Turbo Actuator VGT Turbo Holset Model: HE300VG HE351VE，Before making your purchase, please double-check all specifications and compatibility to ensure the right fit for your needs. Thank you!
- 【Compatible With】The Cummins Turbocharger Actuator kit includes a Wiring Harness Adapter, allowing the use of the 2013-2018 model actuator on the 2007.5-2012 year turbocharger
- 【Compatible With】 This Turbo Actuator 6.7 Cummins is designed to fit the following models: Dodge Ram 2500 ISB 6.7L Diesel (2013-2018), Dodge Ram 3500 ISB 6.7L Diesel (2013-2018), Dodge Ram 4500 ISB 6.7L Diesel (2013-2018) and Dodge Ram 5500 ISB 6.7L Diesel (2013-2018).It serves as a replacement for Holset, and the 6.7L Diesel HE300VG turbo for the I6 Diesel engine. Please verify your model before making a purchase（Only compatible with Ram turbo diesel trucks equipped with Variable Geometry Turbochargers (VGT)）
- 【Replacement OE Number】68481772AA, 68232771AA, 68244609AA, 68307025AA, 68445522AA, 4034090, 3778619, 3788936, 3784299, 3784386, 037842299, 5601240NX, 5601240, 5494878RX, 5494878, 4034309H, 4034309RX, 5494878H, 4034309RX, 5452689, 4034168NX, 4034168, 4034309
- 【Plug and Play Automation】This advanced turbo actuator for 6.7 Cummins features a self-adaptive design with a built-in controller. No complex coding or separate control box is required. Experience precise, automatic calibration right out of the box, saving you valuable installation time and getting your truck back on the road faster
- 【Exact Vehicle Fitment】Engineered for seamless compatibility, this cummins turbo actuator perfectly fits for 2013, 2014, 2015, 2016, 2017, and 2018 Dodge Ram 2500, 3500, 4500, and 5500 models equipped with the 6.7L Diesel engine. It serves as a direct replacement for VGT Holset HE300VG and HE351VE turbochargers
- 【Comprehensive OE Replacement】Designed to meet or exceed industry standards for quality and fitment, this turbocharger actuator replaces multiple part numbers including 68481772AA, 68445522AA, 68232771AA, 68244609AA, 68307025AA, 4034090, 5494878RX, and more. Ensure you are getting the correct actuator to help restore your engine's performance
- 【Enhanced Durability & Performance】Built to withstand extreme engine bay temperatures and pressures, this 6.7 Cummins turbo actuator utilizes upgraded heat-resistant materials and robust internal components. It helps address common fault codes such as P00AF and P0046, supporting optimal throttle response and reliable long-term operation
- 【Reliable Support & Warranty】We stand behind our products with dedicated customer service and a robust warranty. If you have any issues with installation or quality, contact us for a hassle-free solution. Your satisfaction is guaranteed
- 【Fitment】 The vgt actuator 6.7 cummins fits for Ram 2500 6.7L L6 Turbo Diesel 2013-2018 ; Ram 3500 6.7L L6 Turbo Diesel 2013-2018 ; Ram 4500 6.7L L6 Turbo Diesel 2013-2018 ; Ram 5500 6.7L L6 Turbo Diesel 2013-2018 , ISB 6.7 Cummins VGT Turbo Actuator Holset HE300VG HE351VE
- 【New Upgrade Turbine Calibration Module】Tested & certified to meet or exceed OEM quality standards. The new Upgraded Turbine Calibration Module will be more stable than others. With the help of installation video, the installation will make this job a breeze.
- 【Premium Quality】 If You Have Acuator Codes , Under light throttle and some load and sounds like the exhaust break comes on. Don't hesitate, you should replace Our turbo actuator 6.7 cummins in time to restore drivability. With our cummins turbo actuator, the throttle will be more responsive and will prevent the occasional noise from affecting your driving mood,excellent heat dissipation.
- 【Replace】 The 6.7 turbo actuator replaces# 5601240NX / 5601240 / 5494878RX / 5494878 / 4034309H / 4034309RX / 5494878H / 4034309RX / 5452689 / 4034168NX / 4034168 / 4034309 / 4034090 / 3778619 / 3788936 / 3784299 / 3784386 / 037842299 / 68481772AA / 68232771AA / 68244609AA / 68307025AA
- 【Package includes】5494878rx 6.7 cummins turbo actuator ; Turbine calibration module kit ; 4* Screw, 4* tie
- 【Vehicle Fitment】As replacement for cummins ISB 6.7l turbo diesel HE300VG HE351VE, the turbo actuator compatible with Ram trucks: 2500 3500 4500 5500 Cummins 6.7L Turbo Diesel 2013 2014 2015 2016 2017 2018
- 【UPGRADED Calibrate Kit】Compared to other calibration tools, our calibration module is easier to calibrate, facilitates inspection and reduces unnecessary parts, and comes with an adapter harness for installing turbocharger actuator on an HE351VE
- 【Replaces OE Part #】The cummins turbo actuator replaces OE: 5494878RX, 5601240NX, 532704600HX, 5459710RX, 68210648AA, 68212738AA, 68245792AA, 68253983AA, 68295438AA, 68297874AA, 68307025AA, 68321377AA, 68445522AA, 3775426, 3775427, 3775439, 3779986, 3779989, 3781632, 3781633, 3781754, 3781755, 3784573, 3784574, 3787604, 3787607, 3787608, 3794756, 3794758, 3798539, 3798575, 3779987, 5326054, 5326057, 5327046, 532704600
- 【Function】If you have acuator codes, under light throttle and some load it drops boost and sounds like the exhaust break comes on. You need to replace it in time to restore drivability. Our turbo actuators are made of high quality & durable material, tested & certified to meet or exceed OEM quality standards, an ideal replacement
- 【Buy with Confidence】KAVIUS offers 5494878RX turbo actuator with a 12-month manufacture. We extremely value your satisfaction and strive to provide you good shopping experience. If you have any questions about this product, don't hesitate to reach out to us, we will try our best to solve your issue within 24 hours
- ✅[Perfect Fits]: This turbo actuator calibration kit HE300VG HE351VE Compatible with Dodge Ram 2500 3500 4500 5500 2013 2014 2015 2016 2017 2018 with the 6.7L ISB Cummins diesel engine and VGT Turbo
- ✅[Part number]: 3787604 3781632 5601240NX, 3794756, 3775439, 3787608,3781633,3779986,3798539, 37985, 3794758, 3775427,3787607, 3781755, 3779987 ,5326054, 3781754, 3775426,3779989, 3784573, 3784574, 68307025AA, 3798575, 5326054, 5326057, 5327046, 532704600, 532704600HX, 5459710RX, 68210648AA, 68212738AA, 68245792AA, 68253983AA, 68295438AA, 68297874AA, 68321377AA, 68445522AA
- ✅[Fix Common VGT Turbo Issues]: Experiencing actuator trouble codes, loss of boost pressure, or unusual exhaust brake noises? Our turbo actuator kit provides a complete solution to restore your turbocharger's performance, drivability, and boost response, saving you from costly dealership repairs
- ✅[Complete Kit with Upgraded Calibrator]: Includes everything for a seamless install: the turbo actuator itself, all necessary installation hardware, and a user-friendly calibration module. Just follow our clear instructions to quickly sync the new actuator to your truck's ECU—no professional tools needed
- ✅[Rigorous Quality & Long-Lasting Durability]: Constructed with high-grade materials to withstand extreme under-hood temperatures and voltages. Each turbo actuator is rigorously tested to meet or exceed OEM standards, ensuring reliable performance and longevity for miles to come
- 【FUNCTION】Ram 3500 turbo actuator can significantly increase the power and torque of the engine without increasing the engine displacement, increase the speed of the turbine, which can generate a larger intake boost pressure, increase the air intake, and improve the low-speed performance of the engine to keep your vehicle in tip-top condition at all times.
- 【INSTALLATION NOTE】After the IP is successful, make sure the turbine gear is at the left limt position (maxinum flow position) and assemble the actuator. Otherwise, it may lead to calibration failure.Please be sure to watch the calibration video before installing and calibrating.
- 【Compatible With】Turbo actuator calibrate kit compatible with 2013-2018 Dodge Ram 2500 ISB 6.7L Diesel, 2013-2018 Dodge Ram 3500 ISB 6.7L Diesel, 2013-2018 Dodge Ram 4500 ISB 6.7L Diesel, 2013-2018 Dodge Ram 5500 ISB 6.7L Diesel. And including 1 turbo actuator,1 turbine calibration module, 1 Adapter Harness, 2 gasket,4 Screw,4 tie and instructions with installtion video.
- 【Replaces OEM】68481772AA 5601240NX 5601240 68481772AA 5494878RX 5452689 68445522AA 4034090 4034315 6382096RX 5494878H 4034309RX 4034168NX 4034309H 68232771AA 68244609AA 68307025AA 32704600HX 5459710RX 68210648AA 68212738AA 68245792AA 68253983AA 68295438AA 68297874AA 68321377AA
- 【24-MONTH WARRANTY】 If for any reason at all, you are not fully satisfied with the Ram 5500 turbocharger actuator , simply contact us through amazon message at any time. We will provide comprehensive quality assurance for our product.
- 【OE Number】Automatic Calibration Turbo Actuator OE Number : 3787604 3781632 5601240NX, 3794756, 3775439,3787608,3781633,3779986,3798539,37985,3794758,3775427,3787607,3781755,3779987,5326054,3781754,3775426,3779989,3784573,3784574,68307025AA,3798575,5326054,5326057,5327046,532704600,532704600HX,5459710RX,68210648AA, 68212738AA, 68245792AA,68253983AA, 68295438AA, 68297874AA, 68321377AA, 68445522AA--Fit for 6.7 cummins turbo actuator
- 【Vehicle Fitment】The Turbo Actuator Holset HE300VG HE351VE Fits for 2013 2014 2015 2016 2017 2018 Dodge Ram 2500 3500 4500 5500 ISB 6.7L Diesel. ---Note:Please verify your vehicle' s information carefully before purchase in case of getting the wrong part
- 【Automatic Calibration】No coding required, saving you time. Ready to use right after installation,(The vehicle will automatically complete pairing within 2-3 minutes after starting.)--6.7 cummins turbo actuator
- 【Reliability and Stability】 It employs advanced materials and manufacturing processes, enabling stable long-term operation under harsh conditions such as high temperatures and pressures. With rapid response capabilities, it swiftly adjusts according to the engine's operating state, ensuring optimal boost performance across various conditions to enhance power output.
- 【Attention】: Connector Pin Compatibility Required: Verify the connector pin compatibility before installation. Do not apply electrical power to the transfer motor until after installation. Only adjust the position of the transfer case gear, not the transfer case motor, to align with the shift motor.
Choosing the Best VGT Turbo for Your 6.7 Cummins: A Buyer’s Guide
The Variable Geometry Turbocharger (VGT) is a heart of your 6.7 Cummins engine. It helps your truck breathe better and perform at its best. When it’s time to upgrade or replace your VGT, knowing what to look for makes all the difference. This guide helps you pick the right turbo for your needs.
Key Features to Look For
When shopping for a VGT turbo, several features matter most. These determine how well the turbo works now and how long it lasts.
- **Variable Geometry Mechanism:** This is the core feature. Good VGTs use strong, smooth-moving vanes. These vanes change angle quickly. This lets the turbo spool up fast at low RPMs and keep making power at high RPMs. Look for a system that responds quickly.
- **Compressor Wheel Design:** The shape of the compressor wheel affects airflow. Billet aluminum wheels often move more air than cast wheels. More airflow means more power and cooler intake temperatures.
- **Bearing Type:** Most high-quality VGTs use a journal bearing system or a ball bearing system. Ball bearings generally offer faster spooling and better durability, especially under heavy use.
- **Turbine Housing Size:** This relates to how the turbo matches your engine. Stock replacements fit well. Upgraded turbos might have different housing sizes to improve performance for towing or competition.
Important Materials That Matter
The materials used in the turbo build heavily influence its lifespan and performance ceiling.
The housing parts must handle extreme heat. Cast iron is common for the hot side (turbine housing) because it handles heat well. However, better turbos might use stronger alloys.
The moving parts need to be tough. Look for stainless steel for the vanes inside the turbine housing. Stainless steel resists warping better than cheaper metals when temperatures soar. The compressor wheel should ideally be machined from high-strength billet aluminum. Billet parts resist cracking better than standard cast parts.
Factors That Improve or Reduce Quality
Quality isn’t just about the parts; it’s about how they fit together.
Factors That Improve Quality:
- **Tight Tolerances:** When the internal components fit together precisely, less boost leaks occur. This makes the turbo more efficient.
- **Quality Seals:** Excellent seals keep oil where it belongs—in the bearings—and prevent oil from entering the exhaust or intake.
- **Balanced Rotating Assembly:** The turbine and compressor wheels must be perfectly balanced. Poor balancing causes vibrations, which quickly destroys the bearings. High-quality manufacturers balance their turbos precisely.
Factors That Reduce Quality:
- **Cheap Actuator:** The VGT uses an actuator to move the vanes. A weak or slow actuator leads to turbo lag or overspeeding.
- **Poor Casting:** Rough or porous castings in the housings can lead to premature failure under high heat and pressure.
User Experience and Use Cases
Your intended use dictates the perfect VGT choice.
For everyday driving and light towing, a direct OEM replacement or a mild upgrade offers the best balance. You get reliable performance without sacrificing low-end torque.
If you frequently tow heavy loads up long grades, you need a turbo designed for sustained high power. These turbos often have larger compressor wheels to push more air without overheating.
For competition or “sled pulling,” you need the largest, fastest-spooling turbo available. These units often require significant fuel system and supporting modifications to run correctly.
10 Frequently Asked Questions (FAQ) About 6.7 Cummins VGT Turbos
Q: What is the main difference between a stock VGT and an aftermarket VGT?
A: Aftermarket turbos often use stronger internal parts, like billet wheels, and sometimes have a slightly different vane design. This allows them to handle more boost and flow more air than the original factory part.
Q: Will installing a new VGT immediately improve my fuel economy?
A: Not automatically. A properly matched turbo can improve efficiency because the engine doesn’t have to work as hard. However, if you drive more aggressively with the new turbo, your mileage might go down.
Q: How do I know if my current VGT is failing?
A: Common signs are excessive black smoke, noticeable turbo lag (slow response when you press the gas), high-pitched whining noises, or oil leaking into the intake or exhaust.
Q: Can I use a VGT turbo from an older 5.9L Cummins on my 6.7L?
A: No. The 6.7L engine uses a completely different mounting system and requires a VGT specifically designed for its exhaust manifold and electronics.
Q: Do I need a special tune when upgrading my VGT?
A: For mild upgrades, you might not need one immediately. However, for any turbo that significantly changes airflow, a custom engine tune is highly recommended to maximize power and protect the engine.
Q: What is “turbo surge,” and does a new VGT fix it?
A: Turbo surge happens when the air tries to rush backward through the compressor wheel. A high-quality VGT with good vane control usually prevents this, especially when paired with a proper intake setup.
Q: How long should a good quality VGT turbo last?
A: If maintained well (regular oil changes using the correct oil), a quality aftermarket VGT should easily last 150,000 to 200,000 miles or more.
Q: What size VGT is best for towing heavy trailers?
A: Look for a “tow-spec” turbo. These usually have a slightly larger compressor side than stock but maintain good vane geometry for low-end response, preventing high exhaust gas temperatures (EGTs).
Q: Does the VGT actuator need to be replaced with the turbo?
A: If you buy a complete turbo assembly, the actuator is included and matched. If you buy a “hot side only,” you might need to reuse or replace the actuator separately. Always check compatibility.
Q: Is a billet compressor wheel worth the extra cost?
A: Yes, for most users. Billet wheels are stronger, lighter, and can be designed to flow more air efficiently than standard cast wheels. This means better performance and longer life under heavy load.