Description
Overview
The iFJF CCV PCV Reroute Kit is a must-have upgrade for 2004-2010 6.6L Duramax LLY, LBZ, and LMM diesel engines. The factory crankcase ventilation (CCV) system routes oil-laden crankcase vapors directly into the turbocharger inlet — coating your turbo compressor wheel, intercooler, intercooler pipes, and intake manifold with sticky oil residue over time. This oil buildup reduces intercooler efficiency, fouls intake air temperature sensors, and can eventually restrict airflow enough to impact performance and fuel economy.
Our reroute kit redirects crankcase vapors away from the intake tract, keeping your turbo, intercooler, and intake system clean. The result: more consistent performance, better turbo efficiency, and a cleaner engine bay. Installation is completely bolt-on with no permanent modifications required.
Key Features
-
Stops Oil Buildup — Prevents crankcase oil vapor from coating the turbo, intercooler, and intake manifold
-
Maintains Intercooler Efficiency — A clean intercooler transfers heat more effectively, keeping intake air temperatures down
-
Protects Turbocharger — Eliminates oil coking on the compressor wheel that can cause imbalance and premature bearing wear
-
Bolt-On Installation — No drilling, cutting, or permanent modifications required; easily reversible to stock configuration
-
Complete Kit — Includes all hoses, fittings, clamps, and mounting hardware needed for installation
-
Durable Materials — High-temperature resistant hoses and aluminum fittings rated for diesel engine bay conditions
Technical Specifications
| Specification |
Details |
| Compatible Engines |
6.6L Duramax LLY (2004.5-2005), LBZ (2006-2007), LMM (2007.5-2010) |
| Material |
High-Temp Resistant Hose / Aluminum Fittings |
| Installation |
Bolt-On — No Drilling or Permanent Modifications |
| Installation Time |
Approx. 1-2 Hours |
Compatibility
| Year |
Engine Code |
Make/Model |
| 2004.5-2005 |
LLY |
Chevy Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD |
| 2006-2007 |
LBZ |
Chevy Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD (Classic) |
| 2007.5-2010 |
LMM |
Chevy Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD |
FAQ
Q: Is a CCV reroute kit legal for street use?
A: The factory CCV system is part of the emissions control system. Rerouting it to atmosphere rather than into the intake technically modifies the emissions system. Many users install this kit for off-road or competition use. Check your local and state regulations regarding emissions system modifications.
Q: Will this cause my truck to smoke or smell?
A: If routed to atmosphere, you may notice a light oil vapor mist and a slight crankcase odor when idling, especially when the engine is hot. Many users route the vent hose to a catch can or toward the rear of the vehicle to minimize any noticeable vapor.
Q: Will this improve performance?
A: The primary benefit is preventing performance degradation over time. By keeping the intercooler and intake system clean, you maintain the efficiency you already have rather than losing power to oil-fouled components. Some users report slightly improved throttle response due to cleaner intake air.
Q: How does this compare to a full catch can system?
A: A catch can captures oil vapor but still returns filtered air to the intake. A reroute kit eliminates intake contamination entirely by routing vapors externally. Some users combine a catch can with a reroute for maximum oil separation before external venting.
Q: Is this compatible with EGR delete or DPF delete modifications?
A: The CCV reroute is independent of EGR and DPF systems. It can be installed with or without other modifications. However, always verify that any combination of modifications complies with your local emissions regulations.
Q: How often does the system need maintenance?
A: With external routing, the system is essentially maintenance-free. If you add an inline catch can or filter, empty the catch can at each oil change interval. Inspect hoses annually for heat damage or cracking.
Q: Can I install this myself or do I need a mechanic?
A: This is a DIY-friendly installation for anyone comfortable with basic hand tools. The kit installs in 1-2 hours with common wrenches and sockets. No special tools or mechanical expertise beyond basic automotive knowledge required.
Q: Does this kit include everything I need?
A: Yes — hoses, fittings, clamps, brackets, and mounting hardware are all included. You'll only need basic hand tools (socket set, wrenches, screwdrivers) to complete the installation.
📚 Related Guides & Articles
