GM Duramax L5P 6.6L - CCV Upgrade Kit (2017-2024)
Type: Accessories | Fits: GM Duramax
Replace the factory CCV weak points with billet reliability. This CCV Upgrade Kit is designed for 2017–2024 6.6L Duramax L5P trucks and replaces the failure-prone OEM plastic crankcase ventilation/PCV box with precision-machined billet aluminum components. The result is improved crankcase ventilation reliability, reduced risk of pressure-related oil leaks, and a cleaner under-hood layout.
Factory CCV/PCV assemblies can swell, crack, clog, or leak over time. When restriction occurs, crankcase pressure can rise and force oil past seals and gaskets—creating messy leaks and costly repairs. This kit upgrades those vulnerable factory components with billet aluminum parts and properly sized O-rings to help maintain consistent ventilation and long-term durability.
Vehicle Fitment
- 2017–2024 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax L5P
- 2017–2024 GMC Sierra 2500HD / 3500HD – 6.6L Duramax L5P
Technical Specifications
| Product Type | CCV / PCV System Upgrade Kit |
| Material | Precision-Machined Billet Aluminum |
| Sealing | O-Rings Included for Proper Fitment |
| Installation | Direct Replacement Using Basic Hand Tools |
| Estimated Install Time | Typically Under 1 Hour (Varies by Vehicle) |
| Application | Improves CCV Reliability & Helps Control Crankcase Pressure |
What’s Included
- Billet aluminum CCV/PCV replacement components
- Correct-fit O-rings for sealing
- All required fittings/components included for the complete upgrade
- Installation guidance/instructions
Features
- Replaces the OEM plastic CCV/PCV box with billet aluminum components
- Precision-machined parts designed for secure fitment
- O-rings included for a leak-resistant seal
- Complete kit designed to work together—no piecing parts together
- Clean, professional under-hood appearance
Benefits
- Eliminates common factory CCV failure points (swelling, cracking, clogging)
- Helps reduce crankcase pressure buildup that can contribute to oil leaks
- Supports long-term engine reliability and cleaner operation
- Improves serviceability and engine bay layout
- Durable materials built for high-heat, high-use conditions
Installation Notes
- Direct-fit replacement designed for 2017–2024 L5P Duramax applications.
- Installs with basic hand tools; professional installation recommended if unfamiliar with CCV components.
- Always verify all seals and connections after installation.
Important Notes:
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Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
