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WC Fab L5P Open Intake Horn

WC Fab L5P Open Style Turbo Intake Horn 2020-2023

WC Fab L5P/L5D Open Style Turbo Intake Horn 2017-2019

The stock intake air-horn on the L5P is commonly replaced because it necks down just before the turbocharger which creates a low-pressure zone in front of the turbo.  This low-pressure zone lowers turbo efficiency at "high load". Aftermarket intake air horns have a larger inside diameter compared to stock.  This helps to keep the turbo inlet well fed. 

This Open Style Intake Horn has been tested and proven to allow your turbocharger to get the highest horsepower possible. Don't leave power on the table, this is the intake horn you need!

Want to talk with an expert about this product? Call us at 815-568-7920 Monday through Friday from 9-5 CST. 

From $219.00

To $339.00

In stock

Customize WC Fab L5P/L5D Open Style Turbo Intake Horn 2017-2019
2017-19 L5P Duramax High Flow Intake Horn Kit, Open Flange   + $219.00

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WC Fab L5P Open Intake Horn
WC Fab L5P/L5D Open Style Turbo Intake Horn 2017-2019

In stock



    3.5 Inch Turbo Intake Horn (OPEN) for the 2017-2019 L5P Duramax with factory style (VGT) turbo. 

    • Replaces injection-molded plastic OEM turbo intake horn
    • Improves airflow to turbo by removing restrictions found in the factory horn right before the turbo inlet
    • Includes breather line hose and fitting
    • Tuning recommended with this part
    -3 1/2" Intake Horn
    -Open Style Maximum Amount of Air Flow
    -O-Ring and Mounting studs and nuts included
    -1" Parker Hose with Billet Adapter Fitting & Clamp
    -Powdercoated Gloss Black

    Keeping the turbo well-fed is extremely important when using our Stealth 64 and Stealth 67G2 turbos where the factory air-horns anti-surge ring (2.4 inches) literally chokes the inlet of the Stealth (2.65 inches).  To protect against surge and give the best flow possible we've designed anti-surge rings matched to the compressor inlet for use with an aftermarket open style intake air-horn.  The L5P Intake Horn Anti-Surge Ring is essential for your performance built 2017, 2018, 2019, 2020, or 2021 Silverado / Sierra 2500 or 3500 L5P Duramax.  These kits include new studs, O-ring, and nuts needed for installation. 

    • Billet Anti-Surge Ring
    • Made in the USA
    • Installation accessories included
    • Prevent turbo surge when using Open Intake Horn
    • Get the maximum amount of cold air

    Warning: This product can expose you to chemicals that are known to the State of California to cause cancer. For more information, visit