About this product
Stage 2 L5P Duramax High Flow Intake & Intercooler Pipe Upgrade – 2017-2019 6.6L
Upgrade your 2017-2019 Chevrolet Silverado or GMC Sierra 2500/3500 L5P 6.6L Duramax with WCFab's Stage 2 Kit, combining the Stage 1 High Flow Bundle and Stage 2 Intake Kit into a single performance package. This kit improves airflow to your turbo and engine, enhancing efficiency, throttle response, and turbo spool-up while eliminating weak points in the factory design that can cause lost power or boost leaks.
Intake System Improvements
The high-flow fabricated intake pipe, intake horn, and aluminum airbox replace the restrictive factory parts for cooler, denser air and improved engine sound. Features include:
- 14-gauge aluminum construction with smooth, aerodynamic bends
- 4" diameter intake piping and oversized 10G aluminum airbox
- Intake horn over 1" larger than OEM for improved airflow
- Draws cold air through hood Ram Air duct and inner fender
- Removable airbox lid for easy filter inspection and maintenance
- Hydrophobic pre-filter cover protects MAF, turbo, and engine airways
Intercooler Pipe Upgrades
Replace the weak factory intercooler piping with WCFab’s heavy-duty 14-ga aluminum pipes for improved flow and reliability:
- Driver (Hot) Side: 3" diameter, one-piece aluminum, eliminates OEM resonator, includes reinforced silicone boots and stainless t-bolt clamps
- Passenger (Cold) Side: 3.5" diameter, CNC-machined flange with double o-ring seal, reinforced silicone boot for higher boost pressure
- Optimized mandrel bends for smooth airflow and durability
- Improved boost holding and elimination of factory boot leaks
Additional Features
- Custom powder coat finish in WCFab signature colors
- Simple installation with basic hand tools
- Compatible with stock trucks, no tuning required
- Pairs best with emissions-compliant tuning and larger drop-in turbochargers
Experience increased horsepower, better turbo response, and a more aggressive intake sound with this complete Stage 2 airflow upgrade for your L5P Duramax.
Description supplied by WWM Performance through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
