What's a Duramax CCV Reroute kit?
A Duramax CCV reroute kit is a crankcase ventilation upgrade designed to redirect and vent crankcase blow-by gases away from the factory intake system.
Key Benefits of Installing a Duramax CCV Reroute kit
- Reliability: Stop boot soak to prevent intercooler hoses from blowing off under boost.
- Engine Longevity: Keep your intake and valves pristine by stopping oil recirculation.
- Turbo Protection: Prevent oil vapor from coating and pitting your compressor wheel.
- Better Cooling: Ensure your intercooler stays oil-free for maximum heat exchange.
- Lower Maintenance: End the mess by stopping oil leaks that coat the driver-side engine.
- Performance: Experience cleaner combustion and more consistent throttle response.
Duramax CCV Reroute kit: Deleted vs. Stock
| Dimension |
Stock (Factory) |
CCV Reroute (Deleted) |
| Horsepower |
Potential for slight power loss over time due to oil-filmed sensors and intake buildup. |
Optimized; Maintains peak performance by keeping the intake tract and sensors oil-free. |
| Fuel Economy |
Average; Efficiency can dip as the intercooler and sensors become coated in sludge. |
Improved; Slight gains reported as combustion remains clean and intake air remains oxygen-rich. |
| Maintenance Cost |
Moderate; Requires frequent cleaning of the intercooler boots and engine bay from oil sweat. |
Minimal; A permanent, one-time fix that eliminates oil-related mess and boot failure. |
| Reliability |
Moderate; Oil vapor softens rubber boots, causing them to slip or burst under high boost. |
Significantly Enhanced; Protects the turbo from pitting and ensures intercooler boots stay dry and secure. |
| Exhaust Gas Temp |
Higher; An oil-coated intercooler loses its ability to effectively shed heat from the air charge. |
Lower EGTs; A dry intercooler operates at maximum thermal efficiency for cooler intake air. |
| Legal Status |
Street Legal; EPA compliant. |
Off-Road / Competition Use Only. |
Duramax CCV Reroute kit Models Year Fitment Guide
Choose the perfect Duramax CCV Reroute kit by year to guarantee seamless fitment and performance. We offer delete pipes tailored to the exhaust configurations of the 3.0L EcoDiesel platform.
| Duramax CCV Reroute Kit |
Engine & Model Year |
Compatible Vehicles (Chevy/GMC HD Trucks) |
Factory CCV / Emissions System Equipped |
Common Issues With Stock CCV System |
Recommended CCV Reroute Setup |
| LB7 Duramax CCV Reroute Kit |
2001–2004 |
Silverado & Sierra 2500HD / 3500 |
Closed CCV system (no DPF/DEF) |
Oil vapor routed into turbo inlet, intercooler oil buildup, intake contamination |
Basic CCV Reroute Kit (vent-to-atmosphere or catch can option) |
| LLY Duramax CCV Reroute Kit |
2004.5–2005 |
Silverado & Sierra 2500HD / 3500 |
Closed CCV + early EGR design |
Increased crankcase pressure under load, oily residue in intake piping, overheating-prone setups |
Heavy-Duty CCV Reroute Kit with upgraded hose routing |
| LBZ Duramax CCV Reroute Kit |
2006–2007 |
Silverado & Sierra 2500HD / 3500 (Classic LBZ) |
Closed CCV + EGR (no DPF) |
Oil mist recirculation causes intake sludge, turbo compressor contamination |
Performance CCV Reroute Kit (optional catch can compatible) |
| LMM Duramax CCV Reroute Kit |
2007.5–2010 |
Silverado & Sierra 2500HD / 3500HD |
CCV + EGR + DPF (no DEF) |
Oil + soot mixture accelerates intake clogging, frequent regen-related contamination |
CCV Reroute Kit paired with catch can recommended |
| LML Duramax CCV Reroute Kit |
2011–2016 |
Silverado & Sierra 2500HD / 3500HD |
CCV + EGR + DPF + DEF (SCR) |
Higher blow-by under boost, intercooler oil buildup, sensor-related intake issues |
High-Boost CCV Reroute Kit with catch can support |
| L5P Duramax CCV Reroute Kit |
2017–2019 |
Silverado & Sierra 2500HD / 3500HD |
Updated CCV + EGR + DPF + DEF |
More complex ventilation routing, oil vapor buildup in turbo inlet over time |
Year-Specific L5P CCV Reroute Kit (direct-fit design) |
| 2020+ |
Silverado & Sierra 2500HD / 3500HD (New Gen) |
Advanced CCV + Updated emissions + ECM security |
Increased crankcase pressure control needs, limited aftermarket routing space |
Vetted CCV Reroute Kits for supported 2020+ models only |
Perfect Compatibility With Other Duramax Performance Mods
A Duramax CCV reroute kit is one of the best supporting upgrades for modified diesel trucks. These systems pair perfectly with:
Popular Compatible Upgrades
- Duramax EGR Delete Kits – Reduce soot + oil contamination
- Duramax DPF Delete Pipes (Off-road use) – Improve exhaust flow
- Duramax Catch Can Kits (Internal Link)
- Duramax Intake & Turbo Accessories (Internal Link)
Bundling these upgrades can significantly improve engine cleanliness and long-term reliability
How to Install a Duramax CCV Reroute Kit
Installing a Duramax CCV reroute kit is a straightforward upgrade that helps reduce oil vapor buildup in the intake system and keeps your turbo, intercooler piping, and engine cleaner over time.
Installation Steps
- Locate the Factory CCV Breather System: The crankcase ventilation (CCV) outlet is usually located on the valve cover or oil fill area. This is where oil vapors are routed back into the intake from the factory.
- Remove the Stock CCV Hose: Carefully disconnect the factory CCV hose or fitting that leads into the intake tube. This is the component responsible for sending oily vapors into your turbo system.
- Install the Reroute Adapter or Block-Off Fitting: Most kits include a CNC-machined adapter that replaces the factory connection and provides a secure mounting point for the new reroute line.
- Route the New CCV Hose Away from the Intake: Attach the provided hose and route it downward toward the frame rail or designated exit location. This allows crankcase vapors to vent safely away from the intake tract.
- Secure the Hose and Check Clearance: Use the included clamps or brackets to keep the hose away from hot exhaust components, moving parts, or sharp edges.
- Add a Filter or Catch Can (If Included): Some CCV reroute kits include a breather filter or catch can system. Install this component at the end of the hose to prevent oil mist from venting directly into the engine bay.
- Final Inspection and Test Run: Double-check all clamps and fittings, then start the engine to ensure there are no leaks or loose connections.
Note: Every EngineGo kit includes a comprehensive, model-specific guide to ensure your installation is seamless and your fitment is guaranteed. For technical deep-dives, step-by-step photos, and specific torque specs, you can find detailed information under the "Installation Guide" tab on every product page.
Why Choose EngineGo for Duramax CCV Reroute Kit
Choosing EngineGo means partnering with diesel performance experts. We back every build with technical support, ensuring your truck moves from the shop to the street with peak power and reliability.
15+ Years of Expert Support
In-House Specialists: Our team has over 15 years of hands-on experience in Ford Powerstroke, Cummins, and Duramax platforms..
Expert Guidance: We provide comprehensive support, from initial fitment questions to final tuning advice.
High-Performance Reliability
Built to Last: We pride ourselves on offering parts designed for maximum durability and long-term reliability.
Expertly Vetted: Every product is backed by our deep understanding of diesel engines.
A Seamless Shopping Experience
Free Shipping: Many of our kits include free shipping to get your project started without extra costs.
Money-Back Guarantee: Shop with confidence knowing your purchase is protected if you aren't satisfied.
Off-Road Use Disclaimer
Diesel delete kits are intended for off-road and competition-use vehicles only. These products are not legal for use on public roads and are sold strictly for non-emissions-controlled applications.
Always verify and comply with local, state, and federal regulations before purchase or installation.
FAQ
What does a Duramax CCV reroute kit do?
It reroutes crankcase vapors away from the intake to reduce oil buildup and improve airflow.
Will this cause a check engine light?
Most kits do not trigger a CEL, but results may vary depending on year and emissions equipment.
Does this work with an EGR delete kit?
Yes — CCV reroute kits are highly recommended when installing an EGR delete.
Which kit fits my Duramax?
Choose based on engine code (LB7, LLY, LBZ, LMM, LML, or L5P). Fitment is listed on each product.
