GM Duramax LML - CCV Upgrade Kit (2012-2016)
Type: Accessories
Cleaner look. Cleaner performance. Fix crankcase pressure the right way.
Take control of crankcase pressure and keep your intake system clean with this CCV Upgrade Kit for the 2012–2016 LML Duramax. The stock crankcase ventilation system recirculates oily vapor back into the intake, causing carbon buildup, reduced efficiency, and long-term reliability issues. This upgrade vents blow-by properly, deletes the bulky CCV box, and simplifies hose routing—giving your truck a cleaner look and stronger performance.
Vehicle Fitment
- ✅ 2012–2016 GMC Sierra 2500HD/3500HD 6.6L Duramax LML
- ✅ 2012–2016 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax LML
Specifications
| Feature | Details |
|---|---|
| Product Type | CCV (Crankcase Ventilation) Upgrade Kit |
| Material | Machined billet aluminum plates |
| Finish | Black anodized for durability & sleek look |
| Hose Routing | Streamlined, simplified design |
| Installation | Direct-fit, replaces bulky OEM CCV box |
| Application | Prevents intake oil mist, lowers crankcase pressure |
What’s Included
- Black anodized billet aluminum plates
- High-temp hoses with clean routing design
- Hose fittings and clamps
- Install hardware & instructions
Key Features
- Vents Blow-By Pressure – Reduces crankcase pressure buildup for improved reliability
- Keeps Intake Clean – Prevents oil mist coating your intercooler & intake piping
- Deletes Factory CCV Box – Frees up space for easier maintenance & upgrades
- Streamlined Hose Routing – Clean, simple layout improves engine bay look
- Durable Black Anodized Finish – Strong, corrosion-resistant, and sharp appearance
Benefits
- Extends engine life by reducing carbon buildup
- Improves throttle response & airflow efficiency
- Cleans up the engine bay with less clutter
- Smart upgrade for tuned, high-mileage, or performance builds
Important Notes:
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Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
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.
