# Wehrli 17-24 Chevrolet/GMC 6.6L L5P Duramax Up Pipe Bolt Kit

The WCFab L5P Up Pipe Bolt Kit is comprised of 12 specially selected high strength ARP fasteners and matched washers with a pack of assembly lube are designed as an upgrade to the smaller and failure prone 8mm OEM fasteners employed on the 2017 and newer 6.6L Duramax engines to connect the up pipes to the exhaust manifolds and turbocharger pedestal. During our performance development work on these engines we have seen common occurrences of the factory fasteners seizing or breaking in the manifolds or pedestal on brand new, low mile vehicles in rust free environments. This kit is a simple, cost effective upgrade for peace of mind and ease of serviceability for both stock and modified trucks.

-   12 Washers and Bolts for installing both up pipes.
-   ARP Up Pipe Bolt kit for 2017+ Duramax.
-   Includes ARP Assembly Lube

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:** 108.01 CAD
- **Vendor:** Wehrli
- **Type:** Hardware Kits - Other

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 108.01 CAD | In stock |

## Images

- Photo - Primary
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-17-24-chevrolet-gmc-6-6l-l5p-duramax-up-pipe-bolt-kit)
> Updated: 2026-07-03