Shop Duramax EGR delete kits for EGR-equipped 6.6L Duramax generations, including the LLY, LBZ, LMM, LML, and L5P, plus the 2.8L LWN used in the Chevy Colorado and GMC Canyon. Each kit is organized by engine code and model year, helping you find the correct parts for your Silverado, Sierra, Colorado, or Canyon.
Use the fitment list below to match your engine before ordering. Kit contents vary by generation and may include EGR block-off plates, cooler bypass parts, hoses, clamps, gaskets, intake components, and other application-specific hardware.
Duramax EGR Delete Kit Fitment by Model
Duramax EGR systems changed between engine generations. An LML kit will not fit an LBZ, and an L5P kit requires different components from earlier Duramax platforms. Confirm the engine code, model year, vehicle configuration, and complete product description before choosing a kit.
- 6.6L LLY Duramax, 2004–2005: Fits compatible Chevy Silverado and GMC Sierra 2500HD/3500HD models. View the LLY Duramax EGR delete installation guide.
- 6.6L LBZ Duramax, 2006–2007: Fits compatible Chevy Silverado and GMC Sierra 2500HD/3500HD models. View the LBZ Duramax EGR delete installation guide.
- 6.6L LMM Duramax, 2007.5–2010: Fits compatible Chevy Silverado and GMC Sierra 2500HD/3500HD models. View the LMM Duramax EGR delete installation guide.
- 6.6L LML Duramax, 2011–2016: Fits compatible Chevy Silverado and GMC Sierra 2500HD/3500HD models. View the LML Duramax EGR delete installation guide.
- 6.6L L5P Duramax, 2017–2024: Fits compatible Chevy Silverado and GMC Sierra 2500HD/3500HD models. View the L5P Duramax EGR delete installation guide.
- 2.8L LWN Duramax, 2015–2022: Fits compatible Chevy Colorado and GMC Canyon models equipped with the 2.8L Duramax diesel engine.
Fitment reminder: Do not rely on model year alone. A 2007 truck may use an LBZ or a later LMM configuration, depending on its production date and engine code. Confirm the engine code before ordering.
Some LMM and LML kits may include high-flow intake components in addition to the EGR block-off and cooler bypass parts. Materials, fittings, and included hardware can vary between products, so check the individual listing for the exact kit contents.
These products are designed for off-road, closed-course, and race use only. Check the regulations that apply where you operate your vehicle.
What a Duramax EGR Delete Kit Changes
The factory EGR system routes a controlled amount of exhaust gas through an EGR cooler and back into the intake. Over time, soot from the exhaust can combine with oil vapor in the intake and form deposits around the EGR valve, intake passages, and related components.
An EGR delete or cooler bypass kit removes or bypasses selected EGR components and seals the related exhaust and intake passages. Depending on the engine generation, this may remove a leaking cooler from the cooling circuit and reduce the amount of soot entering the intake.
Possible signs of an EGR cooler problem include unexplained coolant loss, white exhaust smoke, a sweet exhaust smell, repeated EGR-related fault codes, or visible coolant contamination. These symptoms can also come from other engine or cooling-system faults, so the cause should be confirmed before parts are replaced.
Some owners report cleaner throttle response or changes in fuel economy after the hardware is paired with the correct calibration. Results vary with the truck, tune, gearing, tire size, driving conditions, and engine condition. Read more about how an EGR delete may affect fuel economy.
After removing or bypassing an EGR cooler, refill and bleed the cooling system according to the procedure for your engine. Trapped air can cause unstable coolant levels, poor heater performance, or overheating. Use the matching installation guide listed above for generation-specific steps.
Why Choose a SPETUNER Duramax EGR Delete Kit?
SPETUNER organizes Duramax EGR kits by engine code and model year rather than presenting them as universal-fit parts. This makes it easier to separate visually similar kits that use different mounting points, coolant routing, intake connections, and hardware.
Depending on the product, a kit may use CNC-machined billet aluminum block-off plates, welded metal tubes, coolant fittings, reinforced hoses, clamps, gaskets, and high-flow intake components. The individual product listing identifies the exact materials and parts included with that application.
Online installation guides are available for the main 6.6L Duramax generations, allowing you to review the required tools, installation steps, coolant-routing changes, and tuning requirements before ordering. If you are unsure about fitment, confirm the engine code and vehicle configuration with the support team before installation.
Build a Complete Duramax Delete Setup
An EGR kit handles only the EGR-related hardware. Depending on the truck and the purpose of the build, additional parts may be required to complete the setup.
- Duramax DPF delete kits provide generation-specific exhaust components for compatible off-road builds.
- Duramax CCV reroute kits redirect crankcase vapor away from the factory intake path.
- Diesel tuners provide the compatible calibration required for electronically monitored engine and emissions components.
- All-in-one Duramax delete kits combine matched hardware and tuning components in one package.
For other Duramax parts organized by engine family, browse the complete GM Duramax parts collection.
Duramax EGR Delete Kit FAQs
Q: How do I know which Duramax EGR delete kit fits my truck?
A: Start with the engine code rather than the truck badge alone. Match your truck to the LLY, LBZ, LMM, LML, L5P, or LWN product listing, then confirm the model year, vehicle model, and configuration. The engine code may be found on the underhood emissions label, vehicle documentation, or through a VIN lookup.
Q: What should I check on a 2007 Duramax?
A: Confirm whether the truck has an LBZ or an LMM engine. The 2007 model year includes a transition between these two generations, and the EGR components are not interchangeable. Do not order based only on the registration year.
Q: Do I need a tune after a Duramax EGR delete?
A: Electronically monitored Duramax applications generally require compatible calibration after EGR components are removed or disconnected. Without the correct calibration, the ECU may detect incorrect EGR flow, store diagnostic trouble codes, illuminate the check engine light, or cause drivability problems. Read whether a tune is required after an EGR delete for more detail.
Q: Is an L5P Duramax EGR delete different from older generations?
A: Yes. The L5P uses different EGR hardware and a more integrated electronic control strategy than the LMM or LML. It requires L5P-specific parts and compatible calibration. Review the pros and cons of an L5P Duramax EGR and DPF delete before planning the complete setup.
Q: Can removing the EGR cooler cause an air lock?
A: Air can remain trapped if the cooling system is not refilled and bled correctly after the cooler is removed or bypassed. Follow the procedure for your engine generation, monitor the coolant level after the first heat cycles, and check all hose and fitting connections for leaks.
Q: What is included with a Duramax EGR delete kit?
A: Contents vary by engine generation. An EGR kit may include block-off plates, coolant bypass fittings, hoses, clamps, gaskets, intake tubes, elbows, or other application-specific hardware. Check the individual product page rather than assuming that every Duramax kit contains the same parts.
Disclaimer SPETUNER’s delete kits are intended for off-road or racing use only. They may not be street-legal in all areas, so please verify local laws before installation. Professional installation is strongly recommended to ensure the best results.