How to Install EGR Upgrade Kit 6.7L Cummins: The Ultimate Step-by-Step Guide

If you own a Ram 2500 or 3500 equipped with the powerhouse 6.7L Cummins turbo diesel, you know it is built to pull houses down. But if you are preparing your truck for closed-course competition, heavy-duty agricultural work, or dedicated off-road use, the factory Exhaust Gas Recirculation (EGR) system is likely your biggest headache.

Unbolting this restrictive setup clears up your engine bay, lowers your operating temperatures, and ensures your inline-six breathes only clean, fresh air. If you are ready to tackle this project in your garage, here is the ultimate, realistic step-by-step DIY installation guide for the 6.7L Cummins.

Why Install an EGR Upgrade Kit on Your 6.7 Cummins?

The stock EGR system takes hot, dirty, soot-heavy exhaust gas and forces it right back into your intake manifold. Mechanically, it is like trying to run a marathon while breathing through a vacuum cleaner bag. Over time, this design causes several severe issues:

• Carbon & Soot Clogging: Sticky carbon builds up on your intake valves, manifold grid heater, and air plenum, choking off airflow, hurting throttle response, and killing fuel mileage.

• The Stuck EGR Valve: The factory valve frequently sticks open or closed due to carbon buildup, causing poor idling, frequent check engine lights, and erratic power delivery.

• Thermal Stress & Cooler Cracks: The internal EGR cooler is exposed to brutal thermal cycling. If it cracks internally, it will leak engine coolant directly into your cylinders, risking a catastrophic engine hydrolock that can destroy your entire motor.

By removing this loop, you ensure your engine only breathes clean oxygen, significantly lowering exhaust gas temperatures (EGTs), protecting your cylinder head, and improving overall mechanical reliability.

Pre-Installation Checklist: Tools and Prep

Before diving under the hood, park your truck on a level surface, set the parking brake, and allow the engine to cool down completely. Working on a hot cooling system or exhaust manifold will result in severe burns.

Required Tools:

• Standard & Metric socket sets 
• Combination wrench set
• Torque wrench
• Flathead screwdriver and pry tools for wiring clips
• Penetrating oil 
• Clean drain pan (minimum 3-gallon capacity)
• Fresh diesel-rated engine coolant

Sourcing the Right Replacement: Pick Your Upgrade Kit

Depending on your exact truck model, configuration, and year, you will need a complete, precision-machined kit to drop straight into place. Check out our heavy-duty product options below to find your perfect fit:

2010-2024 6.7L Cummins Dodge Ram EGR Throttle Valve Cooler Delete Kit

This EGR kit is an all-inclusive package designed specifically for off-road closed-course competition or private land agricultural environments. It completely swaps out the heavy, factory-issued EGR Valve and bulky EGR Cooler block assembly, requiring absolutely no extra fabrication or loose parts to finish your project.

Core Specifications:

• Material: Aircraft-grade Aluminum Alloy & High-Temp Reinforced Silicone.

• Fitment: Comprehensive coverage for 2010 to 2024 Dodge Ram 2500 and 3500 pickup platforms.

Key Product Advantages:

• Stops Carbon Choking: Puts a permanent physical halt to hot, abrasive exhaust gas recycling, preventing heavy soot accumulation inside your intake tract.

• Lowers Coolant Temperatures: Because fluid is no longer routed through the high-temperature factory exhaust cooler core, overall engine coolant operating temperatures drop significantly.

• Stable Thermal Performance: Keeps your engine block thermals stable under intense hauling stresses by eliminating a major source of engine-bay heat.

Planning a DIY weekend project? Check out our step-by-step [2010-2024 Cummins EGR Delete Installation Guide] to map out the teardown before you turn your first wrench.

2009-2024 6.7L Ram Cummins EGR Throttle Valve Cooler Delete Kit

Engineered for precision builders, this EGR upgrade kit offers a beautifully smooth, machined Intake Blocker Plate alongside a critical performance feature: a rear cylinder coolant bypass line.

Core Specifications:

• Material: CNC Precision-Machined Billet Aluminum Alloy.

• Premium Feature: Pre-Tapped Manifold Block-Off Plate (1/8" NPT) ready for immediate EGT (Exhaust Gas Temperature) probe installation.

Key Product Advantages:

• Rear Cylinder Coolant Reroute: Includes specialized reroute couplers that transport fresh engine coolant directly to the very back of the cylinder head (between cylinders 5 and 6), balancing internal temperatures and preventing common head gasket failures.

• Hassle-Free Installation Bracket: Features an upgraded, integrated DDC riser bracket that bolts directly onto the engine frame—meaning you do not have to struggle with or extract frozen factory exhaust studs during installation.

• EGT Monitoring Ready: The pre-tapped manifold block-off plate lets you easily hook up an EGT gauge to monitor real-time engine vitals under heavy load.

To see exactly how these plates line up and how to secure the rear cylinder coolant line, review our walkthrough on [How to Install a 2009-2024 Cummins EGR Kit].

2013-2023 6.7L Dodge Ram Cummins Cab & Chassis EGR Delete Kit Diesel

Commercial fleet vehicles and flatbeds endure completely different duty cycles compared to standard consumer trucks. This specialty EGR delete kit features ultra-thick structural block-off plates designed to handle the continuous backpressure of commercial hauling.

Core Specifications:

• Material: High-Strength Industrial Aluminum Alloy & Heavy-Duty Hardware.

• Fitment: Exclusively engineered for 2013-2023 Ram 3500/4500/5500 Cab & Chassis commercial work trucks.

Key Product Advantages:

• Built for Heavy Duty Cycles: Utilizes heavy-duty industrial aluminum alloy engineered to withstand constant, commercial-grade fleet abuse without cracking or wrapping.

• Optimized Cooling Efficiency: The internal bypass channels are optimized to recirculate engine coolant significantly faster and more efficiently than factory equipment.

• Protects Vital Components: Drastically reduces overall engine thermal loads and shields vital internal gaskets from destructive carbon fouling.

• Engine Bay Space Saver: Removes the entire massive heavy-duty EGR cooler assembly and crossover setup, freeing up critical real estate in tighter commercial engine bays.

Step-by-Step Installation Walkthrough

To make this complex mechanical procedure easy to digest, the installation process is divided into four clean, chronological phases.

Phase 1: Fluid Drain & Electrical Preparation

1. Drain the Cooling System: Locate the radiator drain petcock on the lower driver’s side of the radiator. Place your clean 3-gallon drain pan underneath, open the valve, and remove roughly 2 to 3 gallons of coolant. Once drained, close the valve securely.

2. Disconnect Batteries: Disconnect the negative terminals on both of your truck's heavy-duty batteries to completely cut power and prevent electrical shorts while working around active engine sensors.

3. Clear Workspace: Loosen the clamps and unbolt the factory air intake tract and remove the upper plastic radiator shroud pieces to maximize your arm-room on the passenger side of the engine bay.

Phase 2: Disassembly of Factory Components

4. Unplug Electrical Harnesses: Carefully unclip the plastic wiring harnesses connected to the EGR valve actuator, the throttle valve body, and the exhaust temperature/pressure sensors. Pull the harness out of the way and tuck it safely against the firewall.

5. Remove the Crossover Tube: Locate the long metal crossover tube running across the front of the valve cover. Unbolt the two mounting flanges securing it to the exhaust manifold side and the intake plenum side, then remove the tube from the vehicle.

6. Pull the EGR Throttle Valve: Unbolt the factory cast-aluminum EGR throttle valve assembly from the top of the intake manifold plenum and set it aside.

7. Extract the EGR Cooler Assembly: Soak the exhaust manifold studs thoroughly with high-quality penetrating oil. Disconnect the rubber coolant lines feeding into the bottom of the cooler. Unbolt the rigid support brackets holding the heavy cooler frame to the engine block, then carefully lift the massive factory cooler assembly out of the engine bay.

Phase 3: Hardware Blocker Plate Installation

8. Clean Engine Mounting Surfaces: Use a razor scraper or a scotch-brite pad to thoroughly remove old gasket material and carbon residue from the exhaust manifold face and intake plenum face. A perfectly clean surface is required to prevent leaks.

9. Mount Exhaust Blocker Plate: Place the new high-strength exhaust manifold blocker plate (along with your fresh gasket) over the factory manifold studs. Tighten the nuts down evenly, then use a torque wrench to tighten them to factory specifications.

10. Mount Intake Blocker Plate: Secure the machined intake plenum blocker plate with its corresponding airtight seal to ensure your engine maintains a perfect seal against high turbo boost pressures.

Phase 4: Coolant Reroute  

11. Install Coolant Bypass Line: Take the heavy-duty silicone or aluminum coolant transport line included in your upgrade kit and loop the factory coolant supply and return ports together. This allows engine fluid to recirculate across the cylinder head without restriction.

12. Reassemble Engine Accessories: Reinstall your air intake tract, bolt down your plastic radiator shroud pieces, and double-check that all factory wiring looms are safely zip-tied away from hot exhaust surfaces.

13. Refill Engine Coolant: Open your radiator cap and pour fresh diesel-rated coolant back into the system until full.

Phase 4: Software Calibration

11. Flash the ECU: Do not turn the key to start the engine yet. Because the physical sensors are disconnected, your truck's computer will instantly trigger a massive fault array and permanently trap the vehicle in a 5-MPH restricted "limp mode". Plug your digital diesel tuning device into the OBD-II port under your dash and flash your calibrated off-road software to bypass the deactivated monitors.

12. Initial Leak Check: Start the engine. Let the truck idle for 10-15 minutes until it reaches full operating temperature. Inspect all plates and bypass hoses closely for any signs of weeping coolant or escaping exhaust gasses. Top off the coolant overflow reservoir as the system naturally burps out any trapped air bubbles.

Critical Installation Hazards

While this installation is entirely doable in a home garage, the 6.7 Cummins engine bay presents a few high-risk traps that can instantly turn a 4-hour job into a multi-day nightmare:

Snapped Exhaust Manifold Studs

The studs holding the EGR cooler to the exhaust manifold endure extreme heat cycles and are often heavily rusted. Never force them with an impact wrench. Soak them in high-quality penetrating oil for hours beforehand. If a nut feels locked up, back it off a quarter-turn, apply more oil, tighten it slightly, and work it back out slowly by hand.

Hidden Air/Boost Leaks

When installing the intake blocker plate, ensure the mounting surface is completely smooth and free of old gasket debris. A tiny gap or an improperly torqued bolt will cause a boost leak under heavy load, resulting in a whistling noise, high EGTs, and lost power.

Trapped Air in the Cooling System

Because you must open the cooling system, air pockets will form inside the heater core and cylinder head. When refilling, park the truck facing slightly uphill if possible, squeeze the upper radiator hose to burp out air, and monitor your coolant reservoir closely over the first 100 miles of driving.

Post-Installation Maintenance

An upgraded truck requires slightly altered maintenance habits to ensure maximum component longevity:

• Coolant and Hose Inspection: For the first two weeks following installation, visually check the new silicone bypass hoses and aluminum block-off plates every single morning before starting the truck. Look for any signs of weeping fluid or loose hose clamps as the new parts settle into their initial heat cycles.

• Exhaust Flange Retorque: After running the truck for roughly 500 miles, take a wrench back to the exhaust manifold blocker plates. The aggressive heating and cooling cycles of the exhaust system can cause new bolts to stretch slightly; re-snug them to ensure they stay perfectly sealed.

• Clean Up the Intake Tract: Since your engine is no longer swallowing fresh soot, take the opportunity during your next oil change to spray down your air intake temperature sensor and MAP sensor with electronic cleaner. Wiping off the old, baked-on factory carbon buildup will instantly restore precise data tracking to your engine computer.

Conclusion: Get Your Build Started Right

Executing a clean, professional modification requires using hardware that lines up perfectly with factory tolerances. You don't have to battle leaking plates, cheap hoses, or missing hardware gaskets. Visit www.trucktok.com today to explore our entire inventory of precision-engineered, commercial-grade DPF & EGR Upgrade Kits, high-flow straight pipes, and advanced tuning bundles built to maximize the off-road performance and mechanical reliability of your 6.7 Cummins diesel.

FAQs About Install a 6.7L Cummins EGR Delete Kit

Q1: How long does a 6.7 Cummins EGR delete installation typically take?

A1: If you are an experienced DIYer with a well-stocked toolbox, expect the job to take about 2 to 4 hours. However, if this is your very first time tearing into a 6.7L Cummins engine bay, we highly recommend setting aside a full afternoon or weekend to ensure you can take your time and follow each step meticulously.

Q2: Will removing the factory EGR system cause mechanical issues down the road?

A2: When paired with high-quality hardware and a reputable off-road tune, an upgraded engine bay is exceptionally reliable. Mechanical problems typically only arise from sloppy installation errors—such as reusing old gaskets, failing to clear out carbon buildup on the mounting faces, misrouting the coolant bypass lines, or using the vehicle illegally on public roads.

Q3: Can I ever reinstall my factory EGR system and return the truck to stock?

A3: Yes, the process is completely reversible. If you keep all of your factory components, brackets, and original hardware, you can re-install the stock setup in the future. DIY Tip: Make sure to store all your take-off parts in a clean, dry, labeled box so you aren’t hunting for missing bolts or brackets later on.

Q4: What should I do if I run into a snag or get stuck mid-installation?

A4: Don't panic. If you hit a roadblock, drop us a line with your truck’s model year, engine specs, and a few clear photos of your engine bay under the hood. Our team will gladly help you troubleshoot your setup for your off-road build. Alternatively, you can always reach out to a trusted local diesel specialty shop to help wrap up the project.

Q5: What exactly does an EGR upgrade kit do for a 6.7L Cummins engine?

A5: An EGR delete physically blocks off the exhaust gas recirculation pathway, ensuring hot, dirty exhaust gases are no longer forced back into your clean air intake. For closed-course racing or agricultural use, this setup permanently prevents abrasive soot buildup, lowers your overall intake temperatures, and heavily simplifies your engine bay for easier routine maintenance.