If you own a 2004-2010 6.6L Duramax (LLY, LBZ, or LMM), you’ve likely heard about the CCV (Crankcase Ventilation) system and its impact on engine longevity. Over time, the factory CCV/PCV setup can contribute to oil contamination, turbo wear, and even reduced performance. Fortunately, a CCV/PCV reroute or delete kit can help mitigate these issues—extending the life of your Duramax while improving efficiency.
Why the Factory CCV System Can Be a Problem
The stock CCV/PCV system on the 6.6L Duramax recirculates blow-by gases (containing oil vapor, fuel, and combustion byproducts) back into the intake. While this design meets emissions standards, it has several downsides:
- Oil Contamination – The oily mist can coat your intercooler, intake manifold, and turbo, reducing efficiency.
- Carbon Buildup – Over time, deposits can accumulate in critical components, leading to clogs and poor performance.
- Turbocharger Wear – Excess oil vapor can cause premature wear on turbo seals.
How a CCV Reroute or Delete Kit Helps
A CCV/PCV reroute or delete kit (like our CCV/PCV Reroute Delete Kit for 2004-2010 6.6L LLY LBZ LMM Duramax) redirects these harmful gases away from your intake system. Instead of recirculating them, the kit vents them to the atmosphere or filters them through a catch can.
Key Benefits of a CCV Reroute/Delete:
- Reduces Oil Contamination – Keeps your intake and turbo cleaner for better airflow and efficiency. - Extends Turbo Life – Less oil exposure means fewer seal failures. - Improves Engine Performance – Cleaner air intake leads to more consistent power delivery. - Easy Installation – Most kits bolt on in under an hour with basic tools.
Choosing the Right CCV Reroute Kit
When selecting a Duramax CCV delete kit, look for:
- Durable Materials – High-quality aluminum or steel fittings resist heat and corrosion.
- Proper Venting – Ensures crankcase gases are safely expelled without causing oil leaks.
- Compatibility – Make sure the kit fits your specific LLY, LBZ, or LMM Duramax model.
Our CCV/PCV Reroute Delete Kit is designed for 2004-2010 6.6L Duramax engines, offering a simple and effective solution to protect your engine.
Final Thoughts
If you want to maximize the lifespan of your 6.6L Duramax, a CCV reroute or delete is a smart upgrade. By preventing oil buildup and reducing turbo wear, you’ll keep your engine running stronger for longer.
👉 Check out our CCV/PCV Reroute Delete Kit today and give your Duramax the protection it deserves!
