2017+ L5P 6.6L Duramax CCV Reroute/Delete kit

L5P CCV Reroute/Delete Kit for 2017+ 6.6L Duramax – Upgrade with Filter & Block-Off Plate

Upgrade your 2017+ L5P 6.6L Duramax with this CCV reroute/delete kit from DPFexhaust — designed to fix factory crankcase ventilation problems. This kit eliminates the restrictive OEM CCV routing and replaces it with a high-flow, serviceable L5P CCV filter system and precision block-off plate.
If you're looking for a clean, durable, and emissions-optimized CCV reroute for your L5P, this kit delivers.

Product Features

Product Type: CCV Upgrade Kit

Fitment:

• 2017-2024 L5P 6.6L Duramax Diesel GMC Sierra 2500 HD
• 2017-2024 L5P 6.6L Duramax Diesel GMC Sierra 3500 HD
• 2017-2024 L5P 6.6L Duramax Diesel Chevrolet Silverado 2500 HD
• 2017-2024 L5P 6.6L Duramax Diesel Chevrolet Silverado 3500 HD

Crew cab short bed & crew cab long bed. This will not fit the 3500/4500/5500 Cab & Chassis commercial style truck. 

🔧 What is a L5P CCV Reroute?

The CCV (Crankcase Ventilation) system routes blow-by gases back into the intake. On the L5P Duramax, this setup can lead to oil buildup in the turbo and intercooler. Over time, it causes carbon deposits, intake restriction, and reduced performance.

🚫 Why Reroute or Delete the L5P CCV?

• Factory CCV lines are prone to cracking under heat

• Plastic ports are not serviceable and sit behind the driver-side valve cover

• Replacing the stock system requires removing injectors and fuel lines—very labor-intensive

• This kit reroutes blow-by vapors away from the intake using a durable external L5P CCV filter

Key Features of the DPFexhaust L5P CCV Reroute Kit:

• Designed for 2017–2024 Chevy Silverado & GMC Sierra HD with the 6.6L L5P Duramax

• Includes durable hose, high-efficiency CCV filter, block-off plate, and mounting hardware

• Prevents oil mist from entering the intake system

• Eliminates cracked plastic factory fittings with aluminum components

• Supports both reroute and delete applications for the L5P CCV system

• Simple installation with basic hand tools

✅ Why Choose DPFexhaust’s CCV Reroute for Your L5P?

We’ve designed this L5P CCV reroute kit for DIY installation, long-term reliability, and zero engine codes with the right tuning. Whether you’re daily driving, towing heavy, or modifying your Duramax, this kit adds serious value to your setup.

Q1: Will this L5P CCV reroute kit fit my truck?
A: This kit fits 2017–2024 Chevy Silverado and GMC Sierra HD trucks with the 6.6L L5P Duramax. It won’t fit Cab & Chassis models like the 3500/4500/5500 commercial trucks. Need help confirming? Just send us your VIN.

Q2: How long does it take to install the DPFexhaust CCV reroute kit?
A: Most users complete the installation in 1 to 3 hours using standard hand tools. It’s a straightforward DIY if you’re comfortable working under the hood.

Q3: Will this L5P CCV filter kit work with my Mini Maxx tuner?
A: Yes, both Mini Maxx V1 and V2 are fully compatible. The reroute kit and tuner operate independently but can work together for better engine optimization.

Q4: Will installing this kit void my warranty?
A: It might. Any modification to emissions-related systems can potentially void your factory warranty. We recommend checking with your dealer before installing.

Q5: Is this kit suitable for stock L5P trucks? Will it trigger any error codes?
A: Yes, it works on stock setups. Some trucks may trigger soft codes if the factory CCV is removed. A compatible tuner can help clear these and prevent future codes.

Q6: What’s the difference between the standard version and the upgraded “functional” version?
A: The functional version provides improved oil separation and heat resistance. It’s ideal for high-performance or high-mileage builds.

Q7: Will this L5P CCV reroute cause oil leaks? How can I prevent them?
A: A few drops from the hose outlet is normal. To prevent leaks, double-check all clamps and fittings during install. Avoid over-tightening.

Q8: Do I need to reuse the OEM spacer, or does the kit include everything needed for sealing?
A: The included block-off plate has its own seal. You can retain the spacer for added tightness, but it’s not required for a proper seal.