2004-2010 6.6L LLY LBZ LMM Duramax CCV PCV ReRoute Delete Kit

SPEtuner CCV / PCV Reroute & Delete Kit For 2004.5-2010 GM Chevy GMC 6.6L Duramax LLY LBZ LMM

Keep your intake tract clean and protect your turbocharger on your 2004.5–2010 GM 6.6L Duramax (LLY, LBZ, LMM) with the SPEtuner CCV/PCV Reroute & Delete Kit. Designed to eliminate the factory crankcase ventilation system that routes oily engine blow-by vapors directly back into your turbo inlet and intercooler, this kit stops oil pooling, soot mixing, and sticky buildup. By venting or rerouting these vapors cleanly away, you maintain peak intercooler efficiency, preserve throttle body cleanliness, and ensure long-term engine reliability under heavy towing and extreme performance.

Key Features

• Intake Protection: Stops oily crankcase vapors from coating your factory turbo compressor blades, intercooler piping, and intake manifold.
• Prevent Soot & Oil Sludge: Eliminates the messy combination of oil mist and exhaust soot that creates thick, restrictive buildup inside your intake tract.
• Improved Intercooler Efficiency: Keeps your intercooler clean and functioning at maximum thermal capacity without oily insulation layers.
• Heavy-Duty Durability: Constructed from premium, corrosion-resistant billet aluminum, high-grade fittings, and oil-resistant reroute tubing built to withstand under-hood heat.
• Clean Engine Bay Setup: Streamlines your valve cover and turbo inlet layout while providing a robust, leak-free sealing solution.

Why Delete Your CCV/PCV System?

The stock closed crankcase vent (CCV/PCV) system on Duramax engines is notorious for allowing oil vapors to recirculate back into your intake. Over time, this leads to:

• Gummed-up intercooler boots

• Oil-soaked turbo inlet pipes

• Reduced performance and longevity

This CCV delete kit vents crankcase gases to the atmosphere with a clean, high-flow solution that improves engine health and simplifies under-hood routing.

Why Choose SPETUNER?

• Duramax Diesel Specialists: Engineered specifically to resolve the chronic oil-fouling and intake-coating issues unique to the LLY, LBZ, and LMM platforms.
• Precision-Fit Engineering: Designed using exact OE routing metrics to ensure a direct, leak-free installation onto factory valve covers and turbo inlets.
• Professional Reliability: Prevents premature component wear and messy oil pooling, protecting your valuable turbocharger and intercooler investment.
• Complete Hardware Suite: Supplied with all required plugs, caps, durable tubing, and heavy-duty clamps for a hassle-free setup.

What’s Included

• 8ft of ¾” reinforced silicone hose – oil-resistant and flexible

• Black anodized billet fittings – built to last and resist corrosion

• Straightforward Venturi-style routing – no baffles, no restrictions

• Installation PDF and diagram link for quick and easy setup

Installation

Click to view the installation diagram and access the installation PDF document.

Fitment

• 2004.5 – 2005 Chevrolet Silverado & GMC Sierra 2500HD / 3500HD (6.6L LLY Duramax)
• 2006 – 2007 Chevrolet Silverado & GMC Sierra 2500HD / 3500HD (6.6L LBZ Duramax)
• 2007.5 – 2010 Chevrolet Silverado & GMC Sierra 2500HD / 3500HD (6.6L LMM Duramax)

Note: Off-road use only

FAQ

Q1: What does a PCV reroute do on a Duramax?
A1: Rerouting the PCV system on a Duramax allows crankcase gases to vent externally, preventing them from entering the intake. This helps reduce oil buildup in the intercooler, turbo piping, and intake manifold, improving long-term engine reliability.

Q2: What does a CCV reroute kit do?
A2: A CCV reroute kit eliminates the factory closed crankcase ventilation system, which recirculates oil vapors back into the intake. By venting externally, the kit keeps your intake system clean and minimizes turbo wear from oil contamination.

Q3: Is a CCV delete bad for my Duramax engine?
A3: No, it's actually beneficial for off-road applications. A CCV delete reduces oil contamination in the intake system, which can prolong turbo and engine component life. However, it is intended for off-road or race use only.

Q4: Will this kit fit my 2007 LBZ Duramax?
A4: Yes, this kit is designed to fit all 2004–2010 6.6L Duramax engines, including LLY, LBZ, and LMM models. It fits Silverado and Sierra 2500/3500 HD trucks.

Q5: Do I need a catch can with this CCV delete?
A5: No catch can is required. This kit uses a direct venting system with reinforced hose and high-flow fittings to ensure clean evacuation of crankcase pressure without pooling or dripping.

Q6: Will installing this kit trigger a Check Engine Light (CEL)?
A6: No, installing this mechanical PCV/CCV reroute kit on 2004–2010 Duramax models will not trigger a Check Engine Light.

Q7: How long does it take to install this CCV delete kit?
A7: Installation is straightforward and typically takes about 1 to 2 hours using basic hand tools. A detailed installation PDF is included for guidance.

Q8: Is any custom tuning or programming required after installation?
A8: No, there is no tuning, flashing, or programming required. It is a simple mechanical upgrade that works perfectly with stock tuning.

Q9: Does this kit include all the necessary hardware?
A9: Yes, the kit comes complete with 8ft of reinforced silicone hose, black anodized billet fittings, and routing accessories for a hassle-free install.

Q10: How often should I perform maintenance on the reroute hose?
A10: The system is virtually maintenance-free. However, it is recommended to periodically inspect the hose during regular oil changes to ensure it remains free of kinks or blockages.