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

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.

---

Vehicle Compatibility

• Years: 2017-2024
• Makes: Chevrolet , GMC
• Models:Silverado/Sierra 2500HD, 3500HD
• Engine: 6.6L Duramax L5P (diesel)
• Body: Pickup

---

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 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

• 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.