# Wehrli 17-24 L5P Duramax Billet Exhaust Manifold Kit w/ Gaskets and ARP Hardware

WCFab's 2017-2025 L5P Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components. These manifolds are exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. Outlet locations allow full compatibility with OEM style up pipes and are designed to be paired with WCFab's 2" Stainless High-Flow Up Pipes (sold separately) for optimized performance. Fully compatible with vehicle emissions system, these L5P Manifolds include the necessary sensor port and EGR riser flange. Includes new gaskets, ARP 12PT fasteners, and assembly lube for easy install (up pipe fastener kits sold separately). Finished in Black Ceramic Coat rated for 1800 deg F.

-   Includes ARP 12PT Fasteners and washers for installation to cylinder head. Up pipe fastener kits sold separately as part WCF100199.
-   1/8 NPT ports (and optional plugs) included in driver and passenger side manifold for installation of EGT or drive pressure sensors
-   Includes new gaskets for manifold to cylinder head and manifold to up pipe
-   Fully TIG Welded, CNC machined billet steel exhaust manifolds
-   Finished in Black Ceramic Coat rated for 2000 deg F

This Part Fits:

Year

Make

Model

Submodel

2021-2025

Chevrolet

Silverado 2500 HD

Custom

2017-2025

Chevrolet

Silverado 2500 HD

High Country

2017-2025

Chevrolet

Silverado 2500 HD

LT

2017-2025

Chevrolet

Silverado 2500 HD

LTZ

2017-2025

Chevrolet

Silverado 2500 HD

WT

2024-2025

Chevrolet

Silverado 2500 HD

ZR2

2017-2025

Chevrolet

Silverado 3500 HD

High Country

2017-2025

Chevrolet

Silverado 3500 HD

LT

2017-2025

Chevrolet

Silverado 3500 HD

LTZ

2017-2025

Chevrolet

Silverado 3500 HD

WT

2020-2025

GMC

Sierra 2500 HD

AT4

2024-2025

GMC

Sierra 2500 HD

AT4X

2017-2021

GMC

Sierra 2500 HD

Base

2017-2025

GMC

Sierra 2500 HD

Denali

2024-2025

GMC

Sierra 2500 HD

Denali Ultimate

2022-2025

GMC

Sierra 2500 HD

Pro

2017-2025

GMC

Sierra 2500 HD

SLE

2017-2025

GMC

Sierra 2500 HD

SLT

2020-2025

GMC

Sierra 3500 HD

AT4

2017-2021

GMC

Sierra 3500 HD

Base

2017-2025

GMC

Sierra 3500 HD

Denali

2024-2025

GMC

Sierra 3500 HD

Denali Ultimate

2022-2025

GMC

Sierra 3500 HD

Pro

2017-2025

GMC

Sierra 3500 HD

SLE

2017-2025

GMC

Sierra 3500 HD

SLT

## Details

- **Price:** 2252.79 CAD
- **Vendor:** Wehrli
- **Type:** Headers & Manifolds

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2252.79 CAD | In stock |

## Images

- Photo - Primary
- User 1
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- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-17-24-l5p-duramax-billet-exhaust-manifold-kit-w-gaskets-and-arp-hardware)
> Updated: 2026-07-03