Duramax 6.6L CCV Reroute Kits & Components 2004-2024

How to Pick the Right CCV Reroute Solution

Match Your Engine and Year

LLY, LBZ, LMM, LML, and L5P Duramax engines each have distinct valve cover connections and vent routing. Kits are grouped by generation: 2004-2010, 2011-2016, and 2017-2024. Always verify your specific engine code before ordering.

Full Kit versus Individual Components

Some offerings are complete Duramax CCV reroute kits with all needed hoses, caps, and hardware. Others are individual components like a resonator delete cap for LML or L5P applications. Review each product title to understand what is included.

Important Fitment and Installation Notes

Engine Code Verification

Even within the 2004-2024 range, small differences between LLY and LBZ, or early and late LML, can affect fit. Check each product page for the exact engine codes supported.

Installation Considerations

CCV reroute kits alter the factory crankcase ventilation path. LML and L5P kits often include a resonator delete cap to replace the plastic resonator. All installations should be performed by a qualified technician familiar with diesel emission systems. These components are intended for off-road use only. Verify local regulations before purchasing.

Products in This Collection

• For 2017-2024 L5P 6.6L Duramax CCV Reroute/delete Ventilation Kit – Complete ventilation kit for L5P engines.
• CCV PCV Reroute & Resonator Delete Cap for 2011-2016 6.6L Duramax LML Diesel Chevy CMC – Includes resonator delete cap for LML applications.
• CCV PCV ReRoute Delete Kit for 2011-2016 6.6L Duramax LML Diesel Chevy CMC – Full delete kit for LML platforms.
• CCV PCV Reroute Kit for LLY LBZ LMM 2004-2010 Chevrolet GMC 6.6L Duramax – Covers early Duramax models.
• CCV PCV Reroute Kit for LLY LBZ LMM 2004-2010 Chevrolet GMC 6.6L Duramax Diesel – Another option for 2004-2010 Duramax engines.
• CCV Reroute / delete kit For 2017-2024 L5P 6.6L Duramax Chevy Silverado 2500 3500 – Specifically for L5P Silverado 2500/3500.
• PCV Reroute & Resonator Delete Cap for 6.6L LLY/LBZ/LMM Duramax Chevrolet GMC (2004-2010) – Individual delete cap for earlier engines.

Frequently Asked Questions About Duramax CCV Reroute Kits

What is a Duramax CCV reroute kit and how does it help?

A Duramax CCV reroute kit redirects crankcase ventilation vapors away from the intake tract. Instead of feeding oil mist back into the turbo and intercooler, the kit routes the vapor outside the intake system. This helps reduce oily residue inside the charge air cooler, intercooler piping, and intake manifold. Over time, that can help maintain consistent airflow and prevent buildup that may affect intake system efficiency.

How do I know which CCV reroute kit fits my Duramax truck?

Check your engine code, not just the model year. The 2004-2024 Duramax lineup includes LLY, LBZ, LMM, LML, and L5P variants. Kits are designed for specific engine families: 2004‑2010 (LLY/LBZ/LMM), 2011‑2016 (LML), and 2017‑2024 (L5P). Even within a generation, small differences can matter. Always confirm the exact engine codes listed on the individual product page before ordering.

What is the difference between a complete kit and a resonator delete cap?

A complete CCV reroute kit usually includes hoses, fittings, mounting hardware, and a block-off plate or vent. A resonator delete cap is a separate component that replaces the plastic resonator on some LML or L5P engines. Some of our listings include only the cap for a simpler install while others bundle it with the full reroute. Read each product title carefully to see what is included.

Can I install a Duramax CCV reroute kit myself?

Installation requires working with engine ventilation components. While many owners handle the job, exact steps vary by engine generation. LML and L5P applications often involve replacing the factory resonator with a supplied cap. All installations should be performed by a qualified technician familiar with diesel emission systems. Refer to the product page for specific instructions and notes; we cannot guarantee fitment or ease of installation.

Do these CCV reroute kits work with an aftermarket catch can?

Some reroute kits can be plumbed to a catch can by routing the vent line to a canister before venting to atmosphere. However, not all kits include the necessary adapters or fittings. Check the individual product listing to see if a particular kit supports catch can integration. If you plan to add a catch can, confirm the hose diameters and connection types match your chosen components.

Are these CCV reroute kits legal for use on public roads?

These CCV reroute and delete components are designed for off‑road applications. They modify the factory crankcase ventilation system, which may not comply with on‑road emissions regulations in your area. Before purchasing or installing, verify local, state, and federal laws that apply to your vehicle. Off‑road use only.

Why are the LML and L5P Duramax CCV reroute kits different?

The LML (2011‑2016) and L5P (2017‑2024) Duramax engines use distinct valve cover designs, vent tube routings, and resonator housings. Kits for each generation address these specific differences; LML kits often include a resonator delete cap to replace the plastic resonator, while L5P kits may include a cap but can also re‑route the vent differently. Attempting to use an LML kit on an L5P, or vice versa, will not fit. Confirm your engine code to choose the correct option.

What hardware comes with a typical CCV reroute kit?

Each complete kit includes the necessary hoses, block‑off plates or vent fittings, and mounting hardware. In many cases, a resonator delete cap is supplied for LML and L5P applications. Individual components like a standalone delete cap may not include extra hoses. Always review the product page for a full list of included parts.

What is the return policy and how do I get support?

Unused products may be returned within 45 days of delivery when the Return & Exchange Policy conditions are met. Return shipping responsibility depends on the reason for the return. Review the current policy and use the Contact Us page for assistance. Check the individual product page for any applicable warranty terms.