Contents
Contents
- What Is a 2019–2021 6.7 Cummins Delete Kit?
- How Much Does It Cost to Delete a 2019-2021 6.7 Cummins?
- Core Buying Advice for a 2019 6.7 Cummins Delete Kit
- Best 2019 6.7 Cummins Delete Kit Recommendation - SuncentAuto All-in-One Kit
- Measured Performance Improvements After Installing a 6.7 Cummins Delete Kit
- How to Delete a 2019–2021 6.7 Cummins-Brief Installation Steps
- Important Legal Disclaimer
- Conclusion
- FAQs
For Ram 2500/3500 truck owners, the emissions system equipped on the 2019–2021 6.7L Cummins diesel engine may be environmentally friendly, but it often becomes an obstacle to performance and reliability. Problems such as DPF clogging, EGR carbon buildup, frequent regeneration, engine torque limitation, persistent check engine lights, and DEF system errors not only affect the driving experience but may also result in expensive repair bills.
The mainstream solution on the market is a 6.7 Cummins delete kit. However, fifth-generation Ram trucks manufactured after 2018 are equipped with an SGW security gateway module, making their modification process completely different from that of older models. This article provides a comprehensive explanation of the components, costs, installation steps, performance improvements, and legal risks of a 2019–2021 6.7 Cummins delete kit.
What Is a 2019–2021 6.7 Cummins Delete Kit?
A 6.7L Cummins delete kit is a complete hardware and tuning solution designed to remove the factory emissions-control systems, including the diesel particulate filter (DPF), exhaust gas recirculation (EGR) system, and the diesel exhaust fluid (DEF)/selective catalytic reduction (SCR) system installed since 2013.
These components are replaced with high-performance straight-through exhaust pipes and bypass hardware, combined with dedicated ECM tuning to create a complete delete solution.
It is important to note that the 2019–2021 models belong to the fifth-generation 6.7 Cummins platform, and use a high-pressure common-rail fuel system. Their ECMs, or engine control modules, feature stricter encryption protection. Therefore, the delete kit must include a Security Gateway (SGW) bypass module before tuning data can be written to the ECM.
A complete delete kit designed for a 2019–2021 6.7 Cummins usually includes the following five core components:
① DPF Delete Pipe
A DPF delete pipe replaces the factory DPF and catalytic converter section to create a straight-through exhaust system.
Common types include:
- DPF Race Pipe: Basic straight-through replacement pipe
- Downpipe-back exhaust: A complete exhaust system running from the turbo downpipe to the rear of the truck, maximizing exhaust flow
- Turbo-back exhaust: A complete replacement system beginning at the turbo outlet, providing the most complete performance release. (Available but are rarely used on 2019–2021 models.)
② EGR Delete Kit
An EGR delete kit includes aluminum block-off plates and coolant bypass lines.
Completely removes the EGR cooler and EGR valve, eliminating carbon buildup and the risk of coolant leakage at the source.
③ Tuner
Removing the hardware is only the first step. A delete without tuning will not work. The ECM, or engine control module, will detect the missing hardware and trigger diagnostic trouble codes, potentially placing the vehicle into limp mode.
Common tuning options include:
- Mini Maxx V2 Tuner: Preloaded with DPF, EGR, and DEF delete programs to unlock the engine's full performance potential
- EZ Lynk Auto Agent 3.0: Supports cloud-based delete tune loading for greater flexibility and convenience
④ SGW Bypass Module (SGM Bypass Cable)
This is the component that 2019–2021 owners are most likely to overlook, but it is absolutely essential. Beginning with the 2018 model year, Ram added a Security Gateway Module (SGM) to the OBD-II port. This security gateway locks the OBD-II port and prevents tuning devices from writing data to the ECM.
Without an SGW bypass cable, you cannot perform any ECM tuning on a 2019–2021 model.
How Much Does It Cost to Delete a 2019-2021 6.7 Cummins?
Because the 2019–2021 models require SGW unlocking and compatibility with newer ECU programming, the overall modification cost is higher than that of 2017 and earlier models.
The following are approximate price ranges for different options:
| Package | Price Range | Description |
| Basic hardware kit (DPF pipe + EGR kit) | Starting at $750 | Tuner not included |
| Complete package with tuner | $1,500–$2,400 | Includes tuning hardware and delete programming |
| Complete package with SGW bypass cable | $1,600–$2,500 | Required for 2018+ models |
| Complete service with professional installation | $3,500–$7,000 | Includes labor |
For Our Users: Long-Term Cost Savings
After the modification, owners can completely eliminate:
- DPF cleaning costs of $800–$1,200 per service
- DPF assembly replacement costs starting at $3,000
- EGR cooler repair costs
- DEF refill expenses
Over 300,000 miles of driving, fuel and repair savings may exceed $46,000.
Core Buying Advice for a 2019 6.7 Cummins Delete Kit
Before purchasing a 2019–2021 6.7 Cummins delete kit, make sure you pay attention to the following points:
① Confirm the Model Year
The 2019–2021 models belong to the fifth-generation platform and are not compatible with kits designed for earlier models, including 2007.5–2012 and 2013–2018 trucks. Always confirm your exact model year before purchasing.
② Distinguish Between Pickup and Cab & Chassis Models
The exhaust layouts of 2500/3500 pickups and Cab & Chassis models are different, so their kits are not interchangeable. Confirm your vehicle configuration before purchasing.
③ Choose a Complete All-in-One Package
It is recommended to prioritize a year-specific complete all-in-one kit rather than assembling individual components from different sources. This helps ensure proper fitment and compatibility while reducing after-sales problems.
④ Confirm That the SGW Bypass Cable Is Included or Purchase It Separately
For 2018 and newer Cummins models, an SGW bypass cable is required for tuning.
⑤ After-Sales Support and Installation
Choose a brand that provides complete installation instructions and technical support.
In addition, consider whether the seller offers returns if the product does not fit or another problem occurs. For example, SuncentAuto provides a 45-day worry-free return and exchange service.
Best 2019 6.7 Cummins Delete Kit Recommendation - SuncentAuto All-in-One Kit
After a comprehensive comparison, the SuncentAuto 2019–2021 6.7L Cummins 4-inch Downpipe-Back All-in-One Delete Kit is one of the best-value options currently available on the market.
What the Kit Includes
- 4-inch downpipe-back DPF delete pipe made from T-409 stainless steel
- EGR valve and cooler delete kit with CNC-machined aluminum block-off plates
- Mini Maxx Tuner V2 with preloaded delete programming
- All bolts and clamps required for installation
Why Do We Recommend This Kit?
✅ Complete all-in-one solution: Hardware and tuning are included in one package, eliminating the need to purchase components separately
✅ Precision-molded for all 2019–2021 models: Aligns with factory mounting points, requires no cutting, and installs directly with bolts
✅ High-quality materials: T-409 stainless steel exhaust pipe and precision-machined aluminum EGR block-off plates provide long-lasting durability
✅ Performance optimization: The 4-inch downpipe-back design maximizes exhaust flow and eliminates backpressure
✅ Excellent value: The $1,747.99 price is significantly lower than comparable competing products
✅ Limited-time offer : More amazing discounts on the website, saving you even more!
Do Not Forget to Add the SGW Bypass Cable!
⚠️ Important reminder: The SuncentAuto kit itself does not include the SGW Bypass Cable. You must purchase the following product at the same time:
Together, these two products form a complete modification solution for 2019–2021 Cummins models without compatibility concerns.
Measured Performance Improvements After Installing a 6.7 Cummins Delete Kit
Based on chassis-dyno testing of the SuncentAuto kit and real-world feedback from tens of thousands of truck owners, the following figures quantify the improvements in power, fuel economy, temperature, and service life after modification:
| Metric | Improvement |
| Horsepower (HP) | +60 to +100 HP, or up to +150 HP with aggressive tuning |
| Torque (lb-ft) | +150 to +180 lb-ft |
| Fuel economy | +3 to +6 MPG under load |
| EGT (exhaust gas temperature) | Reduced by 200–300°F under load |
In addition to the numbers, you will also receive the following benefits:
✅ No DEF refilling: Completely eliminates DEF expenses and system maintenance
✅ No DPF regeneration: Frequent active regeneration cycles will no longer interrupt driving
✅ Lower coolant temperatures: The EGR cooler no longer transfers additional heat into the cooling system
✅ Eliminated carbon buildup: The EGR valve and intake manifold will no longer become clogged with carbon deposits
✅ Faster turbo response: With no exhaust backpressure restriction, turbo lag is significantly reduced
How to Delete a 2019–2021 6.7 Cummins-Brief Installation Steps
Phase 1: ECU Tuning
Principle: Tune the ECU first, then remove the hardware. This avoids vehicle malfunction due to failed ECU reprogramming after hardware removal.
Hardware Connection: Insert the bypass cable into the module junction box above the driver’s side foot pedal and begin tuning using your chosen tuning hardware.
Phase 2: Removal of Original Exhaust System and Installation of New Exhaust
Removal of Original Exhaust: Disconnect all exhaust gas sensors, DEF (urea) injectors, and wiring harness. Loosen the securing hooks and remove the bulky DPF/SCR exhaust aftertreatment unit.
Installation of Straight-Through Exhaust: Install the stainless steel straight-through exhaust pipe.
Phase 3: EGR System Removal and Sealing
Wiring Harness Disconnection: Disconnect the power connectors for the EGR valve and the intake throttle valve.
Removal and Blocking: Remove the EGR valve and crosspipe, and install metal blocker plates on the exhaust manifold and intake side.
EGR Cooler Removal: Remove the EGR cooler and install coolant circuit jumpers/water hoses.
Avoidance Tip: If you hear a sharp noise or experience insufficient boost pressure after restarting, it is usually caused by a leak resulting from the block-off plate screws on the exhaust manifold not being fully tightened.
After completing the hardware installation, start the engine, check the exhaust sound, and inspect for coolant or boost leaks.
Important Legal Disclaimer
⚠️ Delete Kits Are for Off-Road Use Only
The products are intended only for off-road driving, racing, private farmland, and other non-road competition uses.
U.S. EPA federal regulations clearly state that removing or tampering with factory emissions-control equipment such as the DPF and EGR on vehicles operated on public roads is illegal. Violations may result in substantial individual fines.
The Factory Vehicle Warranty Will Be Voided
Once a dealership detects third-party ECU tuning or records showing that the DPF or EGR hardware has been removed, warranty claims related to engine and transmission failures may be denied immediately.
Inspection and On-Road Compliance Risks
Modified vehicles will not pass emissions inspections. If road enforcement authorities discover that emissions hardware is missing, the owner may be required to restore all factory components and may also face penalties. Some insurance companies may refuse coverage or increase premiums for vehicles with modified emissions systems.
Seller Responsibility
The complete SuncentAuto delete kits and SGW bypass cables mentioned in this article are sold only for off-road and racing modifications on closed courses. SuncentAuto assumes no responsibility for fines, vehicle impoundment, or repair losses resulting from illegal public-road use. Purchasing these products means that the user fully understands and accepts all associated legal risks.
Before purchasing and installing these products, make sure that the laws and regulations in your state, as well as your actual intended use, allow this type of modification.
Conclusion
The 2019–2021 6.7L Cummins is a diesel engine with enormous potential, but its performance and reliability are significantly restricted by the factory emissions system.
A complete delete kit—including a DPF delete pipe, EGR delete kit, DEF/SCR delete, tuner, and the SGW bypass cable required for 2018+ models—can unlock the engine’s true capabilities.
The SuncentAuto all-in-one delete kit combined with the SGM Bypass Cable provides a complete hardware and tuning solution for less than $1,850, offering significantly better value than comparable products on the market.
However, always remember that removing emissions-control equipment is permitted only for off-road use. Before making any modifications, fully understand and comply with all applicable laws and regulations.
