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6.6L Duramax LML CAT & DPF Delete Pipe | 2015.5-2016
409 Stainless Steel
Regular price
$329.00
Regular price
Sale price
$329.00
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Overview
This 4-inch stainless steel DPF race pipe is designed for late 2015–2016 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups with the 6.6L Duramax LML diesel engine and factory 3-bolt turbo outlet flange. Built for dedicated off-road and competition applications, it replaces the applicable factory exhaust section containing the catalytic converter and diesel particulate filter (DPF).
With its durable stainless steel construction, OE-style hangers and application-specific fitment, this LML race pipe provides a replacement exhaust path for compatible competition vehicles.
Before ordering: This is the late LML 3-bolt flange version. It will not fit trucks equipped with the earlier V-band turbo outlet connection, even if they are registered as 2015 models.
Have a 2011–early 2015 Duramax LML with a V-band turbo outlet connection? This 3-bolt race pipe will not fit your truck. View the 2011–2015 Duramax LML DPF Race Pipe (V-Band) for the correct configuration.
Vehicle Fitment: Late 2015–2016 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: Late 2015 (2015.5) through 2016
- Required connection: Factory 3-bolt turbo outlet flange
- Body style: Pickup trucks only
- Not compatible with: Cab & Chassis trucks or vehicles equipped with the early-style V-band turbo outlet connection
Important: Confirm Your 3-Bolt Turbo Outlet Flange
GM used two different exhaust connection designs during the Duramax LML production years. These connections are not interchangeable, so selecting the correct race pipe is essential for proper fitment.
2011–Early 2015
Uses a V-band clamp at the turbo outlet. These trucks require the early-style race pipe.
Late 2015–2016
Uses a 3-bolt turbo outlet flange. This is the correct pipe for that configuration.
Fitment warning: Because the changeover occurred during the 2015 production period, VIN decoding and model-year information may not accurately identify your truck's flange style. Visually inspect the turbo outlet flange before ordering to confirm the 3-bolt connection. Also verify cab configuration, bed length and wheelbase compatibility.
4-Inch Duramax LML Race Pipe Features
The 2015.5–2016 LML DPF race pipe features a 4-inch stainless steel design for compatible competition exhaust configurations. Its construction provides a durable alternative exhaust section, with OE-style hangers that help maintain the correct mounting position underneath the truck.
- 4-inch exhaust diameter: Designed for compatible 4-inch exhaust configurations.
- Stainless steel construction: Provides durability and corrosion resistance in demanding environments.
- 3-bolt flange configuration: Matches the required factory connection on applicable late 2015–2016 LML trucks.
- OE-style exhaust hangers: Help secure and position the pipe using the appropriate mounting locations.
- No sensor bungs: Designed for applicable dedicated competition exhaust configurations.
Installation and Tuning Requirements
This race pipe is designed to replace the applicable factory catalytic converter and DPF exhaust section in a dedicated competition vehicle. Professional installation is recommended to ensure the correct 3-bolt flange connection, proper exhaust alignment and sufficient clearance around nearby components.
Important: The intended competition-only configuration requires compatible race-specific engine tuning. This pipe is not a direct replacement for a factory emissions-compliant exhaust system.
Before Installation
- Visually confirm that your truck has the factory 3-bolt turbo outlet flange.
- Verify pickup configuration, bed length and wheelbase compatibility.
- Inspect the existing exhaust connections and mounting locations.
- Confirm the need for any additional exhaust components or installation hardware.
- Arrange professional installation and appropriate competition-specific tuning.
Optional 4-Inch Diesel Muffler
If you want to manage exhaust noise in your competition setup, consider adding a compatible 4-inch stainless steel diesel muffler. A straight-through muffler can help reduce exhaust sound without introducing the chambered design of a conventional restrictive muffler.
The muffler is sold separately and is not included with this race pipe.
Shop 4-Inch Stainless Steel Diesel Mufflers
Frequently Asked Questions
Will this DPF race pipe fit my 2015 Duramax LML?
It fits applicable late 2015 trucks equipped with the factory 3-bolt turbo outlet flange. Early 2015 trucks with the V-band connection require the other version. Always inspect the flange before ordering.
What is the difference between the 2011–2015 and 2015.5–2016 LML race pipes?
The main fitment difference is the factory turbo outlet connection. Early LML configurations use a V-band clamp, while late 2015–2016 configurations use a 3-bolt flange. The two pipe versions are not interchangeable.
Will this pipe fit a 2016 Silverado or Sierra 2500HD?
Yes, for compatible 2016 2500HD pickup configurations equipped with the 6.6L Duramax LML and factory 3-bolt turbo outlet flange. Confirm the cab, bed and wheelbase requirements before purchase.
Does it fit Duramax Cab & Chassis trucks?
No. This race pipe is designed for compatible Silverado and Sierra 2500HD and 3500HD pickups, not Cab & Chassis configurations.
Does this Duramax LML race pipe require tuning?
Yes. The intended competition-only configuration requires compatible race-specific engine tuning.
Does the pipe come with a muffler?
No. A compatible 4-inch stainless steel diesel muffler can be purchased separately if additional exhaust sound control is desired.
Competition use notice: This product is intended only for dedicated off-road competition vehicles where such modifications are permitted by applicable law. It is not intended for public-road vehicles or emissions-controlled street use. Check all applicable federal, state and local requirements before purchase or installation.
2015.5-2017 GMC Chevy Duramax 6.6L 2500/3500 pickup with the LML engine.
This kit will only fit models equipped with the OEM-style 3-bolt flange coming off of the turbo direct pipe.
Will not fit Cab & Chassis trucks.
Shipping Policy at Tuner Depot
At Tuner Depot, we understand the importance of timely delivery for your performance parts. We're committed to ensuring a seamless shipping experience, striving to dispatch your orders with utmost efficiency and speed.
Our Shipping Policy: Our aim is to dispatch all orders within two business days, providing you with a quick and efficient processing time. However, unforeseen circumstances beyond our control may occasionally impact shipping times.
Factors Affecting Shipping:
- Weather Conditions: Adverse weather conditions such as rain, snow, or sleet may affect delivery timelines. We will make every effort to minimize any delays.
- Holiday Periods: Please note that our shipping center will be closed during holidays. We will resume shipping promptly on the next business day. Allow for potential delays during peak seasons, but rest assured, we will keep you informed every step of the way.
- Staff Availability: Unforeseen circumstances can occasionally affect our staffing levels, possibly leading to minor delays. We are committed to swiftly resolving any issues to maintain our high standards of service.
We genuinely appreciate your understanding and patience during any unexpected obstacles. Be assured that we will utilize every resource available to deliver your performance parts promptly.
Items Eligible for Return
These items can be returned within 30 days of the purchase date, provided they are unopened, unused, and in their original packaging:
- Tuning devices – for example, an unopened/unused Mini Maxx V1/V2 or blank EFI Live Device
- Cables and device accessories – for example, an unopened/unused switch, bypass cable, universal pyrometer & docking station
Final Sale / Non-Refundable Items
The following items are final sale and cannot be returned:
- Custom tuning – including additional tune files purchased separately or custom tuning purchased with a device
- Exhausts and race pipes – this also includes downpipes purchased separately from an exhaust or race pipe
- EGR kits
Manufacturer Warranty
All items we sell include a 90-day manufacturer warranty.
If an item is being returned due to a manufacturer defect, it may be returned for a full refund, exchange, or replacement with a similar item of equal or lesser value.
For eligible items being returned for any other reason, the same options apply: full refund, exchange, or replacement with a similar item of equal or lesser value, provided the item meets the return requirements above.
Return Process
All returns must be approved by our team before being sent back. We will provide a valid RMA number and prepaid return label for the return.
Please do not send any items back without an approved RMA and the return label provided by us, as returns sent without these will not be accepted or processed.
Off-Road Use Only
These products are intended for off-road, race, and competition use only and may not be legal for use on public highways where emissions laws apply. Check your local and state regulations before purchase.
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