Cummins ISB 6.7 Delete Kit

Why Does Your Cummins ISB 6.7 Need a Delete Kit?

Soot Buildup Choking Your Intake

The factory EGR system on the 6.7 Cummins ISB pumps hot, carbon-heavy exhaust gas back into your intake manifold at a rate that overwhelms the grid heater and intake runners. Over tens of thousands of miles, that soot bakes into a hard crust on the grid heater bolts, intake valve stems, and intercooler boots. Restricted airflow means your Holset VGT turbo works harder to build boost, EGTs climb under load, and your engine burns more fuel to make the same power. A CNC-machined 6061-T6 billet aluminum block-off plate stops soot at the source and lets your intake breathe clean, cool air.

Thermal Fatigue Cracking the EGR Cooler

The EGR cooler on the 6.7 Cummins cycles between 1,200-degree exhaust gas and 200-degree coolant on every drive cycle. That thermal shock fatigues the cooler housing until it cracks, dumping coolant into the exhaust stream. You see it as white smoke, mystery coolant loss, and eventually a no-start condition when the coolant level drops far enough. Replacing a factory EGR cooler runs thousands of dollars, and the new one will fail the same way. Our T304 stainless steel coolant reroute fittings and billet block-off plates eliminate the cooler entirely, rerouting coolant through a clean bypass circuit that runs cooler and lasts indefinitely.

Stuck EGR Valve and Throttle Body Restriction

The factory throttle body butterfly valve and EGR valve get carbon-bound after 60,000 to 80,000 miles of recirculated soot. A stuck EGR valve throws P0404 and P0406 codes, triggers limp mode, and kills throttle response. The throttle body creates a physical airflow restriction even when fully open, limiting fresh air volume to the cylinders. Deleting both with our precision TIG-welded throttle body delete pipe and billet aluminum block-off plate restores maximum airflow, faster turbo spool-up, and sharper mid-range torque across the entire RPM band.

What Can a Cummins ISB 6.7 Delete Kit Solve?

Coolant System Integrity

By removing the EGR cooler and rerouting the coolant circuit with T304 stainless steel bypass fittings, you eliminate the most common source of coolant contamination and loss on the 6.7 Cummins. No more mystery coolant drops, no more white smoke from a cracked cooler, no more pressure testing the EGR system on every service visit.

Lower Exhaust Gas Temperatures

Stopping hot exhaust gas from recirculating through the intake drops combustion temperatures by 100 to 200 degrees Fahrenheit under load. Lower EGTs mean your Holset VGT turbo, cylinder head, and pistons operate in a safer thermal window, especially when towing heavy loads up long grades. Pair the EGR delete with a 4-inch T304 stainless DPF delete pipe and EGTs drop even further by reducing exhaust backpressure.

Eliminated Regen Cycles

The 6.7 Cummins DPF regenerates every 300 to 700 miles by dumping raw fuel into the exhaust to burn off trapped soot. Each regen cycle wastes fuel, raises EGTs, and accelerates oil dilution. A full delete kit with EGR block-off, DPF race pipe, and proper off-road tuning eliminates regen entirely, recovering that lost fuel economy and stopping oil contamination in its tracks.

Sharper Throttle Response and Power Delivery

With the throttle body restriction removed and the intake tract flowing clean air, turbo spool-up drops noticeably. Combined with proper EGR-off tuning, owners report 20 to 40 horsepower gains on conservative tunes, and 50 to 100 horsepower on full delete builds with DPF removal and custom calibration. The throttle pedal goes from soft and delayed to immediate and linear.

Shop Cummins ISB 6.7 Delete Kit by RAM Engine & Fitment Guide

• EGR & Throttle Delete Kit for 2007.5-2009 Ram 2500/3500 - Fits 6.7L Cummins ISB in Dodge Ram 2500/3500 (2007.5-2009). Blocks EGR cooler and throttle body on the first-generation 6.7 ISB with EGR and DPF but no DEF/SCR. Includes CNC-machined billet aluminum block-off plates, T304 stainless coolant bypass fittings, high-temperature Viton O-rings, and all mounting hardware.
• EGR Cooler & Throttle Valve Delete Kit for 2010-2014 Ram 2500/3500 - Fits 6.7L Cummins ISB in Dodge Ram 2500/3500 (2010-2014). Targets the second-generation 6.7 ISB with revised ECU calibration and DPF. Precision TIG-welded delete pipe replaces the factory throttle body assembly, billet aluminum plates seal the EGR ports, and stainless coolant reroute fittings complete the bypass circuit.
• EGR Delete Cooler & Throttle Valve Kit for 2013-2019 Ram 2500/3500 - Fits 6.7L Cummins ISB in Dodge Ram 2500/3500 (2013-2019). Covers the SCR-equipped generation with DEF system added. Block-off plates are CNC-machined from 6061-T6 billet aluminum with high-temperature Viton O-rings that seal against the revised intake manifold design. Compatible with factory sensors and probes for seamless tuning integration.
• 4" DPF EGR Delete Pipe Kit for 2010-2014 Ram 2500/3500 - Fits 6.7L Cummins ISB in Dodge Ram 2500/3500 (2010-2014). Full intake-to-exhaust upgrade with T304 stainless steel 4-inch DPF delete pipe, EGR block-off plates, throttle body delete, and DEF delete hardware. Precision TIG welds throughout, with high-temperature Viton O-rings at every sealing surface. Delivers maximum airflow and eliminates DPF backpressure entirely.
• EGR Throttle Valve Delete Kit for 2007-2017 Ram 2500/3500 - Fits 6.7L Cummins ISB in Dodge Ram 2500/3500 (2007-2017). Covers the broadest year range with a single throttle valve delete and EGR block-off plate set. CNC-machined billet aluminum construction with stainless hardware. Ideal for owners who want to address the throttle body restriction and EGR soot without committing to a full DPF delete.
• EGR Delete Kit for 2013-2018 Ram 3500/4500 Cab & Chassis - Fits 6.7L Cummins ISB in Dodge Ram 3500/4500 Cab & Chassis (2013-2018). Engineered specifically for the Cab & Chassis layout where EGR system routing differs from the pickup version. T304 stainless steel block-off plates and coolant bypass fittings match the C&C exhaust manifold geometry. Not compatible with standard pickup models.
• Full EGR Delete Cooler Kit for 2010-2021 Ram 2500/3500/4500 - Fits 6.7L Cummins ISB in Dodge Ram 2500/3500/4500 (2010-2021). The most comprehensive single-kit solution covering three generations of 6.7 ISB. Includes billet aluminum EGR block-off plates, throttle body delete pipe, T304 stainless coolant reroute fittings, high-temperature Viton O-rings, all gaskets, and high-strength stainless hardware. Integrated transmission dipstick mounting bracket maintains clean engine bay routing.

Why Choose EGR Performance?

The industry standard for high-performance diesel reliability.

Premium Quality & Rigorous Testing

Our EGR, DPF, and CCV delete kits are engineered from premium-grade materials and subjected to brutal quality control and field testing. Unlike generic alternatives, our products are built to withstand extreme heat and pressure, delivering unmatched durability and long-term stability when your rig needs it most.

20 Years of Proven Diesel Expertise

We aren't just selling parts. We live in this industry. With two decades of hands-on experience providing specialized modification solutions for heavy-duty truck owners, our upgrades have been extensively proven across every driving environment, from daily towing to high-performance tracks.

Industry-Leading Standards

We work hand-in-hand with top-tier industry partners and reputable organizations. Every product we design, test, and ship meets or exceeds strict industry standards, ensuring your Powerstroke, Cummins, or Duramax gets the exact precision it deserves.

Real Results, Proven Track Record

Thousands of diesel owners trust us to unlock their engine's true potential. Our massive library of positive customer feedback and successful build case studies proves one thing: our kits deliver real horsepower, lower EGTs, and flawless reliability in the real world.

What does an EGR delete do on a Cummins ISB 6.7?

An EGR delete on a 6.7 Cummins ISB removes the exhaust gas recirculation system that pumps hot, soot-laden exhaust back into your intake manifold.
The kit uses CNC-machined 6061-T6 billet aluminum block-off plates to seal the EGR ports on both the intake and exhaust manifolds, plus T304 stainless steel coolant reroute fittings to bypass the failure-prone EGR cooler.
This stops carbon buildup on the grid heater and intake valves, drops combustion temperatures by 100 to 200 degrees Fahrenheit under load, and eliminates the cracked-cooler coolant contamination that plagues the 6.7 ISB.
With a proper EGR-off tune, the engine runs cleaner, cooler, and more efficiently across the entire RPM range.

Will deleting the EGR improve fuel economy on my 6.7 Cummins?

Most owners report a 2 to 5 MPG improvement after an EGR delete on the 6.7 Cummins ISB, especially on 2010 and newer trucks with active DPF regeneration cycles.
The factory EGR system forces the ECU to dump raw fuel during regen to burn off trapped soot in the DPF, which wastes fuel every 300 to 700 miles.
Removing the EGR and pairing it with a DPF delete pipe and off-road tune eliminates those regen cycles entirely, recovering the lost fuel economy.
Cleaner intake air also improves combustion efficiency, meaning the engine produces the same power with less throttle input and less fuel burn under steady-state cruising.

Do I need a tuner after installing an EGR delete kit on a 6.7 Cummins?

Yes, absolutely. You cannot run an EGR delete on a 6.7L Cummins ISB without an EGR-off tune.
Without proper tuning from a device like the EZ Lynk Auto Agent 3 or EFI Live AutoCal V3, the ECU will detect missing EGR flow, throw P0404 and P0406 codes, and force the truck into limp mode with a check engine light.
The tuner disables EGR monitoring in the ECU, adjusts fueling and timing for the cleaner intake charge, and optimizes the engine calibration for the new airflow characteristics.
Running an EGR delete without a tune will trigger immediate drivability problems and can cause long-term damage from incorrect fuel mapping.

How long does it take to install a Cummins ISB 6.7 delete kit?

A professional or experienced DIY installer can complete the EGR delete on a 6.7 Cummins ISB in 4 to 6 hours using basic hand tools.
The job requires draining engine coolant, removing the intake crossover tube, disconnecting the EGR valve electrical connectors, unbolting the EGR cooler from the exhaust manifold, and removing the throttle body assembly.
Installation of the billet aluminum block-off plates, T304 stainless coolant bypass fittings, and throttle body delete pipe follows in reverse order with new gaskets and high-temperature Viton O-rings at every sealing surface.
First-time installers should budget extra time and have penetrating oil on hand for stubborn exhaust manifold bolts. Our 24/7 live support team is available for real-time tech help from fitment to post-install tuning.

What is included in a complete Cummins 6.7 EGR delete kit?

A complete EGR delete kit for the 6.7 Cummins ISB includes CNC-machined 6061-T6 billet aluminum EGR block-off plates for both intake and exhaust manifolds, a T304 stainless steel coolant bypass or reroute fitting set, and a precision TIG-welded throttle body delete pipe.
The kit also ships with all required gaskets, high-temperature Viton O-rings, and high-strength stainless steel hardware for a direct-fit installation.
Some kits include an integrated transmission dipstick mounting bracket to maintain clean engine bay routing after the EGR cooler is removed.
Full delete bundles add a 4-inch T304 stainless DPF delete race pipe and DEF delete hardware for a complete intake-to-exhaust upgrade.

Will an EGR delete void my 6.7 Cummins factory warranty?

Yes. Modifying or removing the emissions system on your 6.7 Cummins ISB will void the factory powertrain warranty.
Dealerships can detect altered ECU tuning and missing emissions hardware during routine service, and they will deny warranty claims for any powertrain-related failure once the delete is identified.
We recommend waiting until your warranty period has expired before installing an EGR delete kit, or consulting with a diesel-friendly shop about your specific situation.
If you choose to proceed, keep all factory EGR components, gaskets, and hardware stored in a clean, labeled container so the system can be reinstalled if needed for warranty service.

Can I install a 6.7 Cummins EGR delete kit myself?

Many DIYers with solid mechanical skills and a basic socket set can tackle the EGR delete on a 6.7 Cummins ISB successfully.
You will need shallow and deep sockets in 8mm, 10mm, 11mm, 12mm, 13mm, and 15mm sizes, open-end wrenches, a ratchet extension bar, pliers for spring clamps, penetrating oil for exhaust bolts, and a torque wrench for final tightening.
The job is straightforward but requires patience, careful handling of the coolant system to avoid air pockets, and proper disposal of drained coolant.
Our kits ship with detailed instructions and our 24/7 live support team is available for real-time assistance if you run into any fitment questions during the install.

How long will a 6.7 Cummins last after an EGR delete?

With proper off-road tuning and consistent maintenance, a deleted 6.7 Cummins ISB can run reliably for hundreds of thousands of miles.
Eliminating the EGR system removes the primary source of soot contamination in the intake, carbon caking on intake valves, and coolant mixing from cracked EGR coolers, all of which are leading causes of premature engine wear on the 6.7 ISB.
Oil stays cleaner longer because fuel dilution from regen cycles is eliminated, and internal component wear from abrasive carbon particles drops significantly.
Owners who maintain strict 5,000 to 7,000 mile oil change intervals, monitor EGTs with a pyrometer, and keep tuning software updated regularly see extended engine life well beyond what they experienced with the stock emissions system intact.

What is the difference between an EGR delete and a DPF delete on a 6.7 Cummins?

An EGR delete removes the exhaust gas recirculation system that sends hot, soot-laden exhaust back into the intake manifold, while a DPF delete removes the diesel particulate filter that traps soot in the exhaust stream.
The EGR delete uses billet aluminum block-off plates and stainless coolant bypass fittings to seal the intake and exhaust ports and reroute the coolant circuit.
The DPF delete replaces the factory particulate filter with a T304 stainless steel 4-inch or 5-inch race pipe that eliminates exhaust backpressure and stops forced regeneration cycles.
Both modifications work together for maximum performance, but an EGR delete can be installed independently if your primary concern is intake soot and coolant contamination rather than exhaust flow restriction.

Is a Cummins ISB 6.7 delete kit legal for road use?

No. Cummins ISB 6.7 delete kits are engineered and sold strictly for competition and closed-course off-road use only.
Removing or modifying emissions control equipment, including the EGR, DPF, and DEF systems, on vehicles operated on public roads may violate the federal Clean Air Act and state emissions regulations, with penalties that can include fines up to thousands of dollars per violation.
EGR Performance does not endorse or support the installation of delete kits on vehicles registered for public highway use, and all products in this collection are intended for dedicated race trucks, sled pullers, farm equipment, and private-property off-road builds.
Before purchasing, verify your local and state laws regarding emissions modifications, and always pair your delete hardware with proper off-road tuning to ensure safe, compliant operation in your intended use case. Our 1-year warranty, 45-day return policy, and free shipping apply to all off-road purchases.