FITMENT
- 2004.5-2005 6.6L Chevrolet Silverado GMC Sierra Duramax 2500 HD 3500 HD Diesel LLY.
- 2006-2007 6.6L Chevrolet Silverado GMC Sierra Duramax 2500 HD 3500 HD Diesel LBZ.
- 2007.5-2010 6.6L Chevrolet Silverado GMC Sierra Duramax 2500 HD 3500 HD Diesel LMM.
DESCRIPTION
Product Overview
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Swollen intercooler boots, oil-soaked intake pipes, and sticky sludge buildup plague 2004.5–2010 Duramax LLY, LBZ, and LMM trucks equipped with factory crankcase ventilation routing.
- Protect your turbo and charge-air system with this complete Duramax PCV Reroute Package. Designed to bypass the factory turbo inlet path, it stops oil mist from entering your intake, prevents boot slippage under high boost, and keeps your entire intercooler system clean and dry.
Key Features
- Keeps oil out of the charge pipes so the rubber/silicone boots stay dry and clamped tight — even at 30+ PSI of boost, no boot blowouts.
- Cuts off oil vapors before they meet soot in the intake, so that restrictive, engine-choking carbon sludge never forms.
- Removes the bulky plastic factory crankcase box to open up room around the fuel lines and injectors.
- Shields the spinning turbo wheel from abrasive, oil-borne grit, preserving balance and stretching turbo life.
FAQ
Q: What do the two block-off plugs in this kit each do?
A: The PCV Plug blocks the oily return port on the turbo inlet mouthpiece once the factory hoses are off. The Resonator Plug removes the useless plastic “Duramax” silencer box up top — the one known for cracking, leaking boost, and cluttering the engine bay.
Q: Why does the CCV kit span 2004.5–2010 (LLY/LBZ/LMM) while the EGR kits are year-specific?
A: GM left the core engine block and valve covers alone but redesigned the external EGR coolers and sensors generation by generation to hit tightening emissions rules. So the CCV kit is universal, while your EGR delete has to match your exact model year.
Q: Will I hear a difference once the stock resonator box is gone?
A: A bit, yes. Swapping the baffled plastic resonator for the flat billet plug brings out a slightly louder, cleaner turbo whistle under the hood — a subtle change most diesel fans really enjoy.
Q: Will rerouting the PCV leave oil spots on my driveway?
A: Basically none. Blow-by is mostly micro-fine oil vapor, not liquid oil, so as long as your custom hose runs on a continuous downward slope (so oil can’t pool and dump), the vapor disperses harmlessly and your driveway stays clean.
