The 2017–2019 L5P WCFab Cold Air Intake Kit with Air Box is a premium, high-flow upgrade designed to replace the restrictive factory intake system on your 6.6L Duramax. Built for performance, durability, and clean engine bay aesthetics, this kit delivers improved airflow to your turbo while maintaining factory-style fitment and reliability.
Constructed from heavy-duty fabricated aluminum, the intake system features a precision-formed 4” intake tube paired with a sealed air box enclosure designed to draw in cooler, denser air from the factory ram air location. The result is improved throttle response, more efficient turbo spool, and enhanced overall engine performance under load.
The included high-quality dry air filter and Outerwears pre-filter provide excellent filtration and protection in all driving conditions, while stainless steel T-bolt clamps and silicone couplers ensure a secure, leak-free installation. The system is fully bolt-on and engineered to work with stock trucks—no tuning or additional modifications required.
Finished in WCFab’s signature powder coat options, this intake doesn’t just perform—it transforms your engine bay with a clean, aggressive look built to last.
Key Features:
- Fits 2017–2019 GM 6.6L L5P Duramax (2500/3500 HD)
- Full 4” high-flow aluminum intake tube
- Sealed fabricated aluminum air box with ram-air feed
- Dry performance air filter with Outerwears pre-filter
- Improved airflow, throttle response, and turbo efficiency
- Fully bolt-on installation (no tuning required)
- Heavy-duty silicone couplers and stainless T-bolt clamps
- Durable powder coat finish in multiple color options
Built for truck owners who want real performance gains, long-term durability, and a clean, functional engine bay upgrade.