L5P Up Pipe | 6.6L Duramax | GMC/Chevy 2017-2024
L5P Up Pipe | 6.6L Duramax | GMC/Chevy 2017-2024
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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
Do these up-pipes fit stock L5P turbo setups?
Yes. These are OEM-length replacements designed to fit factory turbo and exhaust manifold connections.
Will these up-pipes trigger any check engine lights?
No. They are designed to maintain compatibility with factory emissions systems and sensors.
How do these compare to factory up-pipes?
They offer a 46% increase in flow area along with stronger materials and reinforced bellows, addressing common OEM restriction and durability issues.
Are gaskets included with the kit?
Yes. The kit includes 301 stainless steel gaskets for proper sealing during installation.
Are these suitable for tuned or high-load applications?
Yes. The increased flow and heat-resistant construction are designed to handle higher exhaust temperatures and pressures.
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.
Warranty
Hardware components are covered by Tuner Depot's standard warranty. Tuning devices and software carry manufacturer warranty terms. Use of these products will void your vehicle's factory warranty. Please confirm with your manufacturer before installation.
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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