Wehrli Custom Fabrication WCF100721-RED 3.5" High-Flow Turbo Intake Horn WCFab Red

The Wehrli Custom Fabrication WCF100721-RED is a high-performance 3.5" turbo intake horn designed to replace the restrictive 2.4" OEM plastic intake horn on 2017-2019 GM 6.6L Duramax L5P diesel engines. This performance upgrade delivers measurable horsepower gains by significantly increasing airflow to the turbocharger.

Key Features:

• 3.5" diameter high-flow design for maximum airflow
• Premium powder-coated finish in WCFab Red
• CNC-machined aluminum construction for durability
• No tuning required - bolt-on installation
• Fits stock truck with no other modifications necessary
• Includes O-ring, mounting studs, and hardware
• Made in USA with precision craftsmanship

Wehrli Custom Fabrication is renowned in the diesel performance community for manufacturing high-quality fabricated parts with exceptional fitment and finish. This intake horn is designed as a direct bolt-on replacement that enhances both engine performance and underhood appearance, making it an ideal upgrade for Duramax L5P owners seeking improved airflow without the complexity of tuning or extensive modifications.