# Wehrli 20-24 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - Gloss Black

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.

-   Will fit on stock truck no other modifications or upgrades necessary!
-   INCLUDES provision for the OEM PCV Line connection.
-   Will fit with OEM or any aftermarket intake kit.
-   3.5 in. Intake Horn with Port for OEM PCV Line
-   Durable Custom Powder Coat Finish
-   NO Tuning required, bolt on!
-   Mounting studs and nuts
-   O-Ring

This 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

## Details

- **Price:** 344.92 CAD
- **Vendor:** Wehrli
- **Type:** Air Intake Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 344.92 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 1
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-20-24-chevrolet-6-6l-l5p-duramax-3-5in-intake-horn-w-pcv-port-gloss-black)
> Updated: 2026-07-03