6.6L Duramax L5P CCV Upgrade Kit (2017-2024)

6.6L Duramax L5P CCV delete Kit

The GM Duramax L5P 6.6L CCV delete 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.

Vehicle Compatibility

Years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Make: Chevrolet, GMC
Model: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD
Engine: 6.6L Duramax Turbo Diesel (L5P)

Key Features

• 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.
• 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.
• 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

• 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.
• 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.
• 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.
• Compatible with Stock or Responsibly Tuned 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

• Vehicle Fit: Designed for 2017–2024 GMC Sierra and Chevy Silverado 2500/3500 HD models with the 6.6L Duramax L5P.
• What to Expect: Straightforward steps and common hardware make it a good choice for experienced DIY owners and shops.
• 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.