2017-2024 GM/CHEVROLET 6.6L DURAMAX L5P CCV UPGRADE KIT
Protect your 2017–2024 L5P Duramax engine from long-term damage and performance loss with this Crankcase Ventilation (CCV) Upgrade Kit. The factory system vents oil vapor back into the intake tract, leading to carbon buildup on the intake valves, turbo compressor wheel, and intercooler—especially in tuned or high-mileage applications.
This CCV upgrade reroutes crankcase vapors away from the intake system, reducing oil contamination, promoting cleaner combustion, and improving turbo efficiency. It’s a direct bolt-on modification designed for both stock and modified engines, offering long-term reliability and cleaner operation.
Features & Benefits:
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Fits 2017–2024 GM/Chevy Silverado & Sierra 2500HD/3500HD 6.6L Duramax L5P
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Prevents oil mist and vapor from re-entering turbo and intake system
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Reduces carbon buildup and improves air/fuel mixture
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Protects turbocharger, intercooler, and intake valves
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CNC billet aluminum plate for precise OEM fit
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Silicone or reinforced hose resists oil and high heat
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Cleaner engine internals and extended maintenance intervals
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Ideal for tuned, deleted, or high-performance L5P builds
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Bolt-on installation with no tuning required
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Designed for off-road and competition applications
Truck Compatibility / Applications:
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2017–2024 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P
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2017–2024 GMC Sierra 2500HD / 3500HD 6.6L Duramax L5P
This CCV Upgrade Kit for L5P Duramax engines eliminates oil vapor recycling into the intake system, improving reliability and airflow. An essential mod for performance, towing, or long-term maintenance on your 6.6L Duramax.
Shipping Disclaimer:
✔️ We ship via USPS, UPS, and FedEx.
✔️ Carrier selection is based on package size, weight, and destination.
✔️ Expedited shipping options are available at checkout.
✔️ Orders are processed within 1 business day (Monday–Friday).
✔️ Orders placed on weekends or holidays will be processed on the next business day.
✔️ Tracking information will be provided once the item ships.
✔️ Shipping to PO Boxes, APO/FPO may be limited based on carrier restrictions.
California Proposition 65 Warning:
This product may expose you to chemicals including rubber, aluminum, or synthetic oil vapors, known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit: www.P65Warnings.ca.gov
2017-2024 GM/CHEVROLET 6.6L DURAMAX L5P CCV UPGRADE KIT INSTALLATION MANUAL - CLICK HERE
**This will not fit the 3500/4500/5500 Cab&Chassis commercial style truck.**
Big Dawg Diesel Disclaimer:
This is a race-only product. It is not legal for sale or use on pollution controlled vehicles that are driven on public streets, roads, or highways. Buyer's use or installation of this product for itself or for Buyer's customer is at Buyer's own risk. The Buyer is responsible for obeying federal, state, and local laws. Only Buyer can determine end customer's use and thus assumes any and all liability hereby waiving any and all claims against Big Dawg Diesel in the sale of this product to the maximum extent permissible by law. Make sure to abide by all local, state, and federal laws, including emissions, vehicle safety, and traffic laws. It is Buyer's responsibility to know what those laws are and how they apply to Buyer or Buyer's customer. This product is designed and intended solely for legally organized and sanctioned, closed-course, off-road competition use and is not for use on public streets, roads, or highways. This product is capable of disabling the emissions system on some vehicles. Use on public streets, roads, or highways is a violation of federal and certain state (including California) and local environmental laws.
Visit: www.p65warnings.ca.gov
