• For Off-Road Use Only
    Black Bandit Up-Pipes GM Duramax 6.6L L5P - Stainless Up-Pipes (2017-2024)
  • For Off-Road Use Only
    Black Bandit Up-Pipes GM Duramax 6.6L L5P - Stainless Up-Pipes (2017-2024)
  • For Off-Road Use Only
    Black Bandit Up-Pipes GM Duramax 6.6L L5P - Stainless Up-Pipes (2017-2024)
1 4

L5P Up Pipe | 6.6L Duramax | GMC/Chevy 2017-2024

Sku: EP-GM-L5P-UP

This product fits:

2017-2024 Chevy Duramax L5P 6.6L Silverado 2500 / 3500
2017-2024 GMC Duramax L5P 6.6L Sierra 2500 / 3500
$499.99
-0%
Shipping calculated at checkout.

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HC3A-14C204-ABH

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Black Bandit Series 3 material image
T304 Stainless Steel

The Purest Stainless Steel used in Exhaust System Manufacturing

rust resistant icon

High Rust Resistance

Lasts up to 20+ years icon

Lasts Up To 20+ years

Looks better icon

Looks Better

Black Bandit title material-image
T409 Stainless Steel

The Standard Stainless Steel used in Exhaust System Manufacturing

rust prone icon

Low Rust Resistance

Lasts up to 20+ years icon

Lasts Up To 5-8 Years

Looks better icon

Looks Dull

Attention

A 2022 Cummins Tune Package was added to your cart. This tune is a beta tune that may cause the following:

  • Low power
  • Poor fuel mileage
  • Engine codes that may appear
  • Poor shifting characteristics

For a tested and proven tune, please view our Ram Cummins 6.7L All-in-One DPF/DEF/EGR Delete Kit w/ECM Swap (2022-2024)

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You have added a product to your cart that requires the Service. This required additional service is NOT included in the price shown on TunerDepot.com. This means that you will be required to pay for the Service in addition to the product you have just added to the cart.

Overview

The L5P high-flow up-pipes are a direct replacement for the restrictive factory units, designed to increase exhaust flow and reduce back pressure on 2017–2024 6.6L Duramax engines. Built from heavy-gauge stainless steel with a larger internal diameter, they support improved exhaust velocity and lower EGTs while retaining emissions-compliant operation.

Compatibility

  • Years: 2017-2024
  • Makes: Chevrolet, GMC
  • Models: Silverado 2500HD / 3500HD, Sierra 2500HD / 3500HD
  • Engine: 6.6L Duramax L5P Diesel

Technical Specifications    

Specification Detail
Material 11-gauge 304 stainless steel
Flow Increase 46% larger flow area vs OEM
Bellows Type Internally-sleeved 304 stainless steel
Gaskets Included 301 stainless steel gaskets
Fitment Type OEM-length direct replacement

Key Features & Build Details

  • 46% Increased Flow Area – Larger internal diameter reduces restriction compared to factory up-pipes, improving exhaust gas movement.
  • 11-Gauge 304 Stainless Construction – Thick-wall stainless steel resists cracking, corrosion and heat fatigue under sustained load.
  • Internally-Sleeved Bellows – Reinforced bellows design adds durability by preventing over-expansion and premature failure common in OEM designs.
  • OEM-Length Design – Maintains factory routing and fitment for a true bolt-on installation without modification.
  • Stainless Steel Gaskets Included – 301 stainless gaskets provide reliable sealing under high heat and pressure conditions.

Performance Benefits

  • Reduces Exhaust Backpressure – Increased flow area allows exhaust gases to exit more efficiently, improving overall engine breathing.
  • Helps Lower EGTs – Improved exhaust flow reduces heat buildup under load, beneficial for towing and tuned applications.
  • Improves Turbo Efficiency – Smoother exhaust delivery to the turbo supports more consistent spool and response.
  • Maintains Emissions Compliance – Designed to work with factory emissions systems without triggering issues.
  • Increases System Durability – Heavy-duty materials and reinforced bellows reduce the risk of failure over time.

Installation Notes

Direct bolt-on replacement using factory mounting points. Installation requires removal of factory up-pipes and access to the turbo area; professional installation recommended due to tight engine bay clearances.

Frequently Asked Questions

Q: Do these up-pipes fit stock L5P turbo setups?
A: Yes. These are OEM-length replacements designed to fit factory turbo and exhaust manifold connections.

Q: Will these up-pipes trigger any check engine lights?
A: No. They are designed to maintain compatibility with factory emissions systems and sensors.

Q: How do these compare to factory up-pipes?
A: They offer a 46% increase in flow area along with stronger materials and reinforced bellows, addressing common OEM restriction and durability issues.

Q: Are gaskets included with the kit?
A: Yes. The kit includes 301 stainless steel gaskets for proper sealing during installation.

Q: Are these suitable for tuned or high-load applications?
A: Yes. The increased flow and heat-resistant construction are designed to handle higher exhaust temperatures and pressures.

Important Product Information

Off-Road Use Only: The products sold on this website are intended for off-road use only, and may not be legal for use on public highways where pollution control laws apply.

Check Local Laws: Before purchasing and installing any of these parts, please check your local and state laws to confirm whether the modifications are legal in your area.

Professional Installation Recommended: These kits and parts are strongly recommended to be installed by professional mechanics only. Improper installation may lead to performance issues or damage to your vehicle. Unless specified differently on the product page, our parts do not include installation instructions. They are intended for individuals with a proficient understanding of mechanical systems and procedures. Like many aftermarket parts compatible with a variety of vehicles, minor adjustments or modifications may be necessary during the installation process. We cannot accept returns or offer refunds on the basis of an inability to complete the installation due to the absence of instructions.

Warranty: The use of these parts will void the warranty of your vehicle. Please confirm with your vehicle manufacturer before purchase and installation.

No Liability: Tuner Depot is not responsible for any damage or issues that may arise from the use of these parts.

Product Images: Product images are for illustrative purposes only and may differ from the actual product due to manufacturer design changes or improvements.

No Performance Guarantees: While these parts are designed to enhance the performance of your vehicle, no guarantees are made regarding the specific performance gains that will be achieved.

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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.
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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.