2011–2016 Chevy/GMC LML 6.6L Duramax DPF Delete Pipe
This exhaust configuration is intended for owners who need a 4-inch or 5-inch replacement pipe for the factory DPF and catalytic-converter exhaust section. Listed applications cover 2011–2016 Chevrolet Silverado and GMC Sierra pickups equipped with the 6.6L Duramax diesel LML engine, with separate configurations for 2011–2015 and 2015.5–2016 trucks.
This is a DPF/CAT race-pipe product, not an EGR delete kit, CCV reroute kit, or complete EGR/DPF/DEF/CCV package. Compatible engine programming is required when emissions-related exhaust components are removed. Select the correct year range, pipe diameter, exhaust coverage, and muffler configuration before ordering.
Vehicle Fitment
| Years | Make and Model | Engine | Listed Body Configurations | Selection |
|---|---|---|---|---|
| 2011–2015 | Chevrolet Silverado / GMC Sierra pickup | 6.6L Duramax diesel, LML | Crew cab short bed or crew cab long bed | Choose a listed 2011–2015 configuration |
| 2015.5–2016 | Chevrolet Silverado / GMC Sierra pickup | 6.6L Duramax diesel, LML | Crew cab short bed or crew cab long bed | Choose a listed 2015.5–2016 configuration |
- Confirm the LML engine code before ordering.
- Check the truck’s factory DPF/CAT exhaust layout and original emissions configuration.
- Listed fitments only.
- Existing exhaust, suspension or chassis modifications may affect installation.
Specifications
| Product Type | DPF/CAT delete race pipe and selected downpipe-back exhaust configurations |
|---|---|
| Material | T-409 stainless steel |
| Material Thickness | 2 mm |
| Available Pipe Diameters | 4 inch and 5 inch, depending on selected configuration |
| Muffler Options | With or without muffler on listed configurations |
| Engine Application | 6.6L Duramax diesel, LML |
T-409 stainless steel is magnetic; a magnet sticking to the pipe does not by itself mean the material is ordinary carbon steel.
Key Features
- Configuration-specific fitment: Separate options are offered for 2011–2015 and 2015.5–2016 LML trucks.
- Multiple exhaust layouts: Choose from listed DPF race-pipe, downpipe-back and muffler configurations.
- 4-inch and 5-inch options: Select the diameter that matches the required exhaust configuration.
- T-409 stainless construction: The pipe uses 2 mm stainless-steel material.
- Factory mounting considerations: The 2011–2015 installation procedure uses the truck’s exhaust mounting locations and factory turbo band clamp.
What This DPF Delete Pipe Changes
The pipe replaces the selected factory aftertreatment exhaust section associated with the DPF and catalytic-converter hardware. Removing this equipment changes the original emissions system and affects the sensors and regeneration strategy used by the factory engine controls.
The exact exhaust coverage depends on whether the selected option is a DPF race pipe or a downpipe-back configuration. It does not remove or block the EGR valve or EGR cooler, and it does not reroute the crankcase ventilation system.
What Is Included
Package contents vary by selected configuration. The 2011–2015 DPF delete pipe installation configuration identifies the following pipe sections:
- Pipe section 41211
- Pipe section 41213
- Connector section 90220
Components differ between the 4-inch, 5-inch, muffler and downpipe-back options. Select the required configuration before ordering and check all components before installation.
Tune and Programming Requirements
A compatible DPF-delete-capable tuner or engine calibration is required when the factory emissions-related exhaust components are removed. The tuner is a separate product and is not part of the pipe-only configurations.
Operating the truck without the required compatible programming can result in a check engine light, diagnostic trouble codes, interrupted regeneration logic or reduced-power operation. Calibration compatibility must match the truck’s model year, engine controls and installed exhaust configuration.
View the separately sold compatible tuner options.
Installation Notes
- Allow the exhaust system to cool completely before removal.
- Use suitable jack stands, gloves and eye protection when working under the truck.
- The 2011–2015 installation procedure reuses the factory turbo band clamp.
- Exhaust sections should be positioned and checked for clearance before the clamps are fully tightened.
- Suspension lifts or other chassis changes can require exhaust adjustment for proper clearance.
- Professional installation is recommended for exhaust removal, cutting, alignment and programming.
View the 2011–2015 DPF delete pipe installation instructions.
Who This Configuration Is For
- Owners of a listed 2011–2016 Chevrolet Silverado or GMC Sierra with the 6.6L LML Duramax engine.
- Buyers who understand which factory exhaust section the selected pipe configuration replaces.
- Vehicles with the required compatible engine programming and appropriate installation support.
- Buyers who have selected the correct year range, diameter, muffler option and exhaust coverage.
Who Should Not Buy This Configuration
- Owners who need to retain the complete factory emissions system.
- Vehicles outside the listed LML engine and model-year applications.
- Buyers who do not have compatible tuning or programming available.
- Anyone expecting a complete EGR, DEF or CCV delete package from a pipe-only option.
- Owners who require a guarantee that the vehicle will pass an emissions inspection or remain legal for public-road operation.
Emissions and Road-Use Notice
Removing or rendering factory emissions equipment inoperative can violate federal, state or local law and may affect emissions testing, registration, the vehicle manufacturer’s warranty or insurance coverage.
Do not install this product on a vehicle that must retain its certified factory emissions configuration. Product purchase or installation does not guarantee compliance with any road-use or competition exemption.
Related LML Duramax Upgrade Options
Drivers looking for a separate package containing additional emissions-system hardware and a tuner can review the 2011–2015 LML Duramax EGR/DPF/DEF/CCV All-in-One Kit. This is a separate product and its components are not included with the pipe-only configurations on this product page.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 5–10 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
2011–2016 LML Duramax DPF Delete Pipe FAQs
Q1: What factory system does this product change?
A1: It replaces the selected factory exhaust section associated with the DPF and catalytic-converter hardware. Exhaust coverage depends on the selected race-pipe or downpipe-back configuration.
Q2: Is this an EGR delete kit or CCV reroute kit?
A2: No. This is a DPF/CAT exhaust-pipe configuration. It does not remove the EGR valve or cooler and does not reroute the crankcase ventilation system.
Q3: Which engine does it fit?
A3: Listed applications use the 6.6L Duramax diesel LML engine in 2011–2016 Chevrolet Silverado and GMC Sierra pickups. Check the engine code before ordering.
Q4: Are the 2011–2015 and 2015.5–2016 configurations the same?
A4: No. They are offered as separate selections. Choose the configuration that matches the truck’s production range and factory exhaust layout.
Q5: Does the pipe include tuning or programming?
A5: No tuner is included with the pipe-only configurations. A compatible DPF-delete-capable tuner or calibration is required separately.
Q6: Can the truck develop a check engine light without compatible tuning?
A6: Yes. Removing emissions-related exhaust components without compatible programming can trigger warning lights, diagnostic trouble codes, regeneration problems or reduced-power operation.
Q7: What is the difference between the race-pipe and downpipe-back options?
A7: They cover different portions of the exhaust system. Components and pricing vary by the selected configuration, so choose the required exhaust coverage before ordering.
Q8: Should I choose a 4-inch or 5-inch pipe?
A8: Choose the diameter that matches the required exhaust configuration and the rest of the truck’s exhaust system. Pipe diameter alone does not guarantee a specific power or fuel-economy result.
Q9: What does the muffler option change?
A9: The muffler changes the exhaust configuration and sound control. It does not replace the need for correct fitment, installation or compatible programming.
Q10: Is professional installation recommended?
A10: Yes. Removal can involve lifting the vehicle, cutting exhaust sections, reusing factory mounting hardware, checking clearances and completing compatible engine programming.
Q11: Can existing modifications affect installation?
A11: Yes. Suspension lifts, altered exhaust components and other chassis changes can affect pipe position and clearance.
Q12: Will this product guarantee emissions-inspection compliance?
A12: No. It removes factory emissions-related exhaust equipment and should not be purchased by anyone who must retain the certified emissions configuration or requires an inspection guarantee.