GM Duramax L5P 6.6L CCV Upgrade Kit is a specially designed replacement for the stock 2017–2024 GMC Sierra and Chevy Silverado HD trucks' crankcase ventilation assembly. As a direct replacement for the stock OEM plastic PCV/CCV box with billet aluminum components, it guarantees that the 6.6L Duramax L5P has a balanced and consistent crankcase pressure, cleaner air flow, and durable reliability—especially on workhorse towing and every-day use.
Key Features
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CNC-machined billet construction: Aluminum components are accurately machined and matched with contour-hugging O-rings such that the assembly closes securely and operates leak-proof under heat, vibration, and boost.
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Complete, matched kit: Everything you need in hardware and seals are included, that is, each item comes together perfectly without digging for extra fittings or adapters.
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Easily installed: Most installations are completed in under an hour with basic hand tools, and installation time is dictated mainly by removing the stock fasteners.
Benefits
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Protection against pressure-driven leaks: Replace swell- and clog-sensitive plastic case assembly with proper crankcase ventilation and protect rear/front main seals and oil pan gasket against leaks due to higher pressure.
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Improves reliability and engine life: Robust CCV performance reduces oil mist carryover and sludge accumulation, contributing to smooth turbo spool, steady output of torque, and cleaner intake tracts in the long term.
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OEM-plus appearance: The low-profile billet assembly offers a pro-looking, corrosion-resistant appearance that's just right for fleet, towing, and day-driven installations.
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Compatible with stock or responsible tune trucks: Either factory installed or paired with engine tuning (e.g., EFI Live), the modification allows for supporting driveability, fuel economy, and horsepower stability without altering the emissions hardware.
Installation & Compatibility
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Vehicle fit: Designed for 2017–2024 GMC Sierra and Chevy Silverado 2500/3500 HD models with the 6.6L Duramax L5P.
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What to expect: Straightforward steps and common hardware make it a good choice for experienced DIY owners and shops.
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Cross-shopping context: Owners also cross-shop Ram 2500/3500 (6.7L Cummins), tuners, and exhaust parts; the kit isn't a tuner and doesn't change engine calibration, yet complements responsible engine tuning for torque, efficiency, and reliability.
Disclaimer: Factory CCV/PCV components are replaced with this item and are not disabled or deleted. Local, state, and federal laws must be abided by at all times. Installation should be inspected professionally, especially for engine-tuned (EFI Live or others) vehicles. The seller and manufacturer are in no way responsible for improper use, illegal modifications, and improper installation.
- 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. Please note that, unless specified differently on the product page, our parts do not include installation instructions. Our components 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: DPFdelete 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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