Wehrli Custom Fabrication WCF100403-BB Stage 3 High Flow Intake Bundle Kit Billet Blue L5P Duramax

The Wehrli Custom Fabrication WCF100403-BB Stage 3 High Flow Intake Bundle Kit is the ultimate bolt-on intake upgrade for the 2017–2019 L5P Duramax diesel. Finished in Billet Blue powder coat, this comprehensive kit bundles everything needed to replace the restrictive factory plastic intake components with high-quality fabricated aluminum pieces, delivering measurable gains in airflow, throttle response, and turbo spool-up.

What's Included:

• 4 in. Aluminum Intake Pipe – High-flow mandrel-bent aluminum construction replaces the factory restrictive pipe
• 4 in. Intake Horn with PCV Port and Surge Ring – Improves airflow to the turbo compressor while maintaining proper PCV function
• Air Box Enclosure with Dry Filter Assembly – Enclosed airbox protects the filter from dirt and engine heat
• Outerwears Pre-Filter Cover – Added protection for the dry air filter element
• 4 in. Silicone Boot(s) and Installation Hardware – Everything needed for a complete, clean installation

Key Features:

• Significant increase in airflow over stock intake system
• Improved turbo efficiency, throttle response, and spool-up
• Eliminates weak points in the factory design that can contribute to boost leaks and power loss
• Durable powder coat finish in Billet Blue
• No tuning required – true bolt-on installation
• Made in the USA by Wehrli Custom Fabrication

Wehrli Custom Fabrication is a trusted name in high-performance diesel fabrication, specializing in Duramax, Power Stroke, and Cummins platforms. The WCF100403-BB Stage 3 Intake Bundle Kit is emissions-compliant and designed to fit on a stock truck with no additional modifications required, making it an ideal upgrade for both street-driven and high-performance diesel applications.