FITMENT
- 2011-2016 6.6L Chevy GMC Duramax LML 2500 HD 3500 HD Diesel.
DESCRIPTION
Product Overview
- Oil-laden blow-by recirculation causes ongoing charge-air contamination and maintenance issues on 2011–2016 LML Duramax trucks. The stock CCV/PCV system constantly feeds oil vapor into the turbo inlet, coating compressor blades, swelling rubber boots, and combining with exhaust soot to bake sticky carbon sludge inside your intake.
- This complete LML Duramax PCV/CCV Reroute Delete Kit eliminates intake oil contamination by bypassing the factory crankcase loop. By venting crankcase pressure cleanly away from the incoming air supply, it stops power-robbing manifold sludge at the source, preserves intercooler boot retention, and ensures your engine receives a continuous supply of oil-free fresh air.
Key Features
- Routes crankcase vapor through a streamlined, no-angle venturi path that vents pressure efficiently without leaving oily puddles under the truck.
- Keeps factory oil mist from soaking the rubber intercooler boots, heading off the “boot soak” that weakens the rubber and blows hoses off under high boost.
- Purges oil vapor from the intake so carbon sludge can’t build inside the manifold and grid heater, leaving only clean, dry air to burn.
- Shields the delicate turbo compressor wheel from hot oil vapor that coats and pits its blades, preserving turbocharger health for the long haul.
FAQ
Q: Why would I want to bypass the factory crankcase ventilation system, and what happens if I keep it stock?
A: The stock system routes hot, oil-saturated crankcase blow-by gases back into the intake. Over time that sticky oil mist bakes under engine heat and forms stubborn carbon deposits that restrict airflow, rob horsepower, and cut fuel efficiency.
Q: Why are a crankcase ventilation reroute and an EGR delete viewed as the “ultimate combination”?
A: The EGR system brings in dry carbon soot while the CCV system brings in sticky oil mist. When the two mix inside a hot intake, they form a thick, cement-like sludge that heavily chokes the intake valves. Deleting both ensures the engine breathes only clean, dry air.
Q: What benefit comes from removing the factory crankcase box?
A: The factory box is bulky and sits dead center in the engine bay. Taking it out opens up the top of the motor, making future maintenance—such as servicing injectors, replacing glow plugs, or accessing wiring—significantly easier.
Q: Some bypass kits make oil drip beneath the truck. Will this kit do that too?
A: No. Cheap kits rely on improper hose angles that let oil pool and drip onto the driveway. This kit uses a streamlined, restriction-free routing that vents vapors cleanly and keeps oil accumulation to an absolute minimum.
