2011-2015 6.6L Duramax LML 304 stainless steel DPF delete pipe

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

409 Stainless Steel

Regular price $319.00
Regular price Sale price $319.00
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GM Duramax LML (2011 - 2015)

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

SKU: SKU:DPSS-GM-11

Regular price $319.00
Regular price Sale price $319.00
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Overview

Built for 2011–early 2015 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups with the 6.6L Duramax LML engine, this 4-inch stainless steel DPF race pipe is designed for trucks equipped with the factory V-band turbo outlet connection. It provides a replacement exhaust section for dedicated off-road and competition applications, using durable stainless steel construction and OE-style hangers for secure mounting.

Before ordering: This is the early LML V-band version. Some 2015 trucks use a different 3-bolt turbo outlet flange. Confirm the actual flange on your truck before selecting this pipe.

Have a late 2015 or 2016 Duramax LML with a 3-bolt turbo outlet flange?

This V-band race pipe will not fit your truck. View the 2015.5–2016 Duramax LML DPF Race Pipe (3-Bolt Flange) for the correct configuration.


Vehicle Fitment: 2011–Early 2015 Duramax LML

  • Make: Chevrolet and GMC
  • Models: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD and Sierra 3500HD
  • Engine: 6.6L Duramax LML turbo diesel
  • Model years: 2011 through early 2015
  • Required connection: Factory V-band clamp at the turbo outlet
  • Body style: Pickup trucks only
  • Not compatible with: Cab & Chassis trucks or vehicles equipped with the late-style 3-bolt turbo outlet flange

Important: V-Band vs. 3-Bolt Turbo Outlet Flange

The Duramax LML exhaust connection changed during the 2015 production period. The correct race pipe depends on the factory turbo outlet flange, not simply the truck's model year.

Model Years Turbo Outlet Connection Correct Pipe
2011–Early 2015 Factory V-band clamp connection This pipe is correct for that configuration.
Late 2015–2016 Factory 3-bolt turbo outlet flange These trucks require the late-style pipe.
Fitment warning: Production overlap means VIN decoding and model-year information may not reliably identify the flange style. Visually inspect the turbo outlet connection before ordering. Also confirm your truck's cab configuration, bed length and wheelbase for proper exhaust fitment.

4-Inch Stainless Steel Race Pipe Features

This Duramax LML DPF race pipe is designed to replace the applicable factory emissions-related exhaust section in a competition-only configuration. Its 4-inch diameter provides a consistent exhaust flow path, while stainless steel construction helps resist corrosion and withstand demanding operating conditions.

  • 4-inch exhaust diameter: Designed for compatible 4-inch exhaust configurations.
  • Stainless steel construction: Built for durability and corrosion resistance.
  • OE-style exhaust hangers: Help support and position the pipe during installation.
  • Early LML V-band fitment: Designed specifically for the factory V-band connection.
  • No sensor bungs: Intended for applicable dedicated competition exhaust configurations.

Installation and Tuning Requirements

Compatible race-specific engine calibration is required for the intended competition application. Professional installation is recommended to verify flange fitment, exhaust alignment, hanger placement and clearance around nearby components.

Before Installation

  • Confirm that your truck has the factory V-band turbo outlet connection.
  • Verify pickup configuration, bed length and wheelbase compatibility.
  • Confirm that the existing exhaust can be modified as required.
  • Arrange appropriate professional installation and competition-specific tuning.
  • Check whether additional exhaust components are required for your setup.

Optional 4-Inch Diesel Muffler

Want to reduce exhaust noise in your race exhaust setup? A compatible 4-inch diesel muffler can help manage sound while maintaining a straight-through exhaust configuration. Mufflers are available separately and are not included with this pipe.

Shop 4-Inch Stainless Steel Diesel Mufflers


Frequently Asked Questions

Will this DPF race pipe fit my 2015 Duramax LML?

It fits applicable 2015 pickup models with the factory V-band turbo outlet connection. Late 2015 trucks equipped with the 3-bolt flange need the other version. Visually confirm the flange before ordering.

Does this race pipe fit a 2016 Duramax LML?

No. This version is designed for the early V-band configuration. Applicable 2016 pickups use the late-style 3-bolt flange version.

Does it fit Duramax Cab & Chassis trucks?

No. This pipe is designed for compatible Silverado and Sierra 2500HD and 3500HD pickup configurations, not Cab & Chassis models.

Does this Duramax race pipe require tuning?

Yes. The intended competition-only configuration requires compatible race-specific engine tuning.


Competition use notice: This product is intended only for dedicated off-road competition vehicles where such modifications are permitted by applicable law.

Customer Reviews

Overall rating: 4.0 / 5 from 6 reviews.

Tuner depot advertises that it’s a full exhaust system, from the new down pipe all the way to the back, they don’t tell you that you need to use the tail pipe section. Not worth the money. Once again no instructions for the kit. Will never recommend this company for anything. They should give me a refund.

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

Everything fit well the exhaust install was very easy the race Muffler made my truck sound almost stock very little sound difference. Can hear the turbo a little more now after EGR Delete can hear the turbo a lot more. Everything worked as advertised and very happy with everything purchased tuner did the job quite well truck runs great now

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

The pipe was exactly what I ordered and worked excellent. My only issue is more so with UPS because it all shipped out together but the exhaust sat in a warehouse for 3 days and they would not say it was lost so I couldn’t file a claim. I ordered another one so that I could finish the vehicle but then the original showed up. Now I have another exhaust that they don’t accept returns on.

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

Kept getting DEF issues after spending $4000 for new EGR valve and sensors. I had 7 different codes on my scanner. Now I have none, fuel mileage went from 13.4 to 18. Exhaust gas temperatures dropped. I used the muffler exhaust and pipe system and the truck sounds great!! Truck just seems happy ...

6.6L Duramax LML DPF Delete Pipe | CAT & DPF | GM 2011–2015

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