3.5 in. Turbo Intake Horn for the 2020-2024 L5P Duramax with factory style Turbo. The OEM plastic intake horn is 2.4 in. diameter and we experienced a 25HP Gain with our 3.5 in. Horn when used with a Max Effort Tune. Tuning not required, this horn will work plug and play tuners or OEM calibration.
Installation InstructionsThis Part Fits:
| Year |
Make |
Model |
Submodel |
| 2021-2024 |
Chevrolet |
Silverado 2500 HD |
Custom |
| 2020-2024 |
Chevrolet |
Silverado 2500 HD |
High Country |
| 2020-2024 |
Chevrolet |
Silverado 2500 HD |
LT |
| 2020-2024 |
Chevrolet |
Silverado 2500 HD |
LTZ |
| 2020-2024 |
Chevrolet |
Silverado 2500 HD |
WT |
| 2024 |
Chevrolet |
Silverado 2500 HD |
ZR2 |
| 2020-2024 |
Chevrolet |
Silverado 3500 HD |
High Country |
| 2020-2024 |
Chevrolet |
Silverado 3500 HD |
LT |
| 2020-2024 |
Chevrolet |
Silverado 3500 HD |
LTZ |
| 2020-2024 |
Chevrolet |
Silverado 3500 HD |
WT |
| 2020-2024 |
GMC |
Sierra 2500 HD |
AT4 |
| 2024 |
GMC |
Sierra 2500 HD |
AT4X |
| 2020-2021 |
GMC |
Sierra 2500 HD |
Base |
| 2020-2024 |
GMC |
Sierra 2500 HD |
Denali |
| 2024 |
GMC |
Sierra 2500 HD |
Denali Ultimate |
| 2022-2024 |
GMC |
Sierra 2500 HD |
Pro |
| 2020-2024 |
GMC |
Sierra 2500 HD |
SLE |
| 2020-2024 |
GMC |
Sierra 2500 HD |
SLT |
| 2020-2024 |
GMC |
Sierra 3500 HD |
AT4 |
| 2020-2021 |
GMC |
Sierra 3500 HD |
Base |
| 2020-2024 |
GMC |
Sierra 3500 HD |
Denali |
| 2024 |
GMC |
Sierra 3500 HD |
Denali Ultimate |
| 2022-2024 |
GMC |
Sierra 3500 HD |
Pro |
| 2020-2024 |
GMC |
Sierra 3500 HD |
SLE |
| 2020-2024 |
GMC |
Sierra 3500 HD |
SLT |
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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Price Match Guarantee:
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Fitment Guarantee:
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Direct Consultation:
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(828) 588-5888
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To qualify for our Fitment Guarantee, please email your vehicle’s Year, Make, Model, and any existing modifications to:
support@autohousesupply.com
Our experts will review your specifications and provide written confirmation for your build.
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For tracking updates or status inquiries on existing orders, please reach out via our Contact Form. Having your order number ready will allow us to provide the most efficient update.
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Flexible Returns:
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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|
Exclusions:
|
To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
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Need assistance? Reach out via our
Contact Form before shipping any items back so we can provide you with an RMA number.
Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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Verify Your Build:
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If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
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Our Promise:
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When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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Questions? Send us your
Year, Make, and Model via our
Contact Form and we’ll get you a definitive answer so you can buy with confidence.
