GM Duramax LML CCV Upgrade Kit (2012-2016)

GM 6.6L Duramax LML CCV Upgrade Kit (2012–2016)

Protect your 2012–2016 LML Duramax with this CCV Upgrade Kit. The factory crankcase system can send oil vapors back into the intake, which may cause carbon buildup, restrict airflow, and reduce power efficiency. This upgrade helps control crankcase pressure better, keeps the intake cleaner, and gives the engine bay a clean, functional look.

• Improved Crankcase Venting: By venting blowby pressure more efficiently, this kit reduces internal stress in your motor, enabling smoother operation and longevity in the long run.
• Cleaner Intake System: Prevents oil mist contamination of your intercooler and intake pipe, helping to keep throttle response, airflow, and overall engine performance in check.
• Simplified Engine Bay: Gets rid of cumbersome OEM CCV box, opening up space to allow easy access in normal maintenance or possible upgrade.
• Optimized Hose Routing: Features a direct, straight hose design that improves airflow management in combination with under-hood organization.
• Long-Lasting Construction: Anodized in glossy black, machined aluminum plates are robust, long-lasting, and provide a classy, elegant finish

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Vehicle Compatibility

• Years: 2012-2016
• Makes: Chevrolet Silverado, GMC Sierra
• Models: 2500, 2500HD, 3500, 3500HD
• Engine: 6.6L Duramax LML (diesel)
• Body: Pickup

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Why Upgrade

As mileage goes up and performance tuning is added, the factory crankcase system can struggle to control pressure. This sends pressure and oil vapor back through the turbo and intercooler, which can reduce efficiency and wear parts faster. The CCV Upgrade Kit fixes this by improving ventilation, helping keep airflow cleaner, power more consistent, and engine components protected for longer.

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Performance with Purpose

This CCV Upgrade Kit is built for truck owners who care about both performance and a clean engine bay. It uses durable anodized hardware, well-machined parts, and a simple airflow design that works efficiently. You’ll notice better performance in everyday driving, and it also gives the engine compartment a neat, professional look.