# Wehrli 15.5-16 Chevrolet 6.6L LML Duramax 3in Stainless Down Pipe (3 Bolt Flange)

Replace the restrictive crushed factory down pipe on your 2015.5-2016 LML Duramax with this full 3" Stainless steel down pipe. For use with factory turbo or factory style drop in turbo on trucks with the 3 bolt flange exhaust connection. - - Replaces the following GM Part Numbers: 12674630, 12655717 - - For 2011-2014 style exhaust system with v-band connection use Down pipe PN: WCF100704

-   3" Stainless Downpipe (3 bolt flange)
-   Heat Wrap and clamps
-   No Tuning Required
-   Made in USA

This Part Fits:

Year

Make

Model

Submodel

2015-2016

Chevrolet

Silverado 2500 HD

High Country

2015-2016

Chevrolet

Silverado 2500 HD

LT

2015-2016

Chevrolet

Silverado 2500 HD

LTZ

2015-2016

Chevrolet

Silverado 2500 HD

WT

2015-2016

Chevrolet

Silverado 3500 HD

High Country

2015-2016

Chevrolet

Silverado 3500 HD

LT

2015-2016

Chevrolet

Silverado 3500 HD

LTZ

2015-2016

Chevrolet

Silverado 3500 HD

WT

2015-2016

GMC

Sierra 2500 HD

Base

2015-2016

GMC

Sierra 2500 HD

Denali

2015-2016

GMC

Sierra 2500 HD

SLE

2015-2016

GMC

Sierra 2500 HD

SLT

2015-2016

GMC

Sierra 3500 HD

Base

2015-2016

GMC

Sierra 3500 HD

Denali

2015-2016

GMC

Sierra 3500 HD

SLE

2015-2016

GMC

Sierra 3500 HD

SLT

## Details

- **Price:** 517.08 CAD
- **Vendor:** Wehrli
- **Type:** Downpipes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 517.08 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-15-5-16-chevrolet-6-6l-lml-duramax-3in-stainless-down-pipe-3-bolt-flange)
> Updated: 2026-07-03