# Wehrli 2011-2016 LML Duramax Passenger Side Upper Crossover Intercooler Pipe Kit Gloss Black

The 3" High Flow Passenger Side Upper Crossover Intercooler Pipe for 2011-2016 LML Duramax provides a 20% increase in size over the OEM part allowing for less restriction in air flow and and an increase in efficiency and turbo spool up. Eliminates resonator for improved appearance and more aggressive turbo and engine sound. For use with the OEM Y-Bridge and connects to factory throttle valve and grid heater. Finished in your choice of custom powder colors.This pipe is compatible with stock trucks requiring no additional modifications, upgrades, or tuning for installation. Installs easily with basic hand tools. Pairs best with emissions compliant tuning and drop in turbochargers for optimum performance gains. Replaces the following GM Part Numbers: 12642321

-   Will fit on stock truck no other modifications or upgrades necessary!
-   Includes Billet Turbo Resonator Plate for OEM Intake Horn
-   Connects to factory throttle valve and grid heater
-   3 in. High Flow Upper Intercooler Cross Over Pipe
-   Durable Custom Powder Coat Finish
-   18% Gain in Air Flow Over Stock
-   Compatible with OEM Y-Bridge
-   NO Tuning required, bolt on!
-   14g aluminum construction
-   Made in USA

This Part Fits:

Year

Make

Model

Submodel

2015-2016

Chevrolet

Silverado 2500 HD

High Country

2011-2016

Chevrolet

Silverado 2500 HD

LT

2011-2016

Chevrolet

Silverado 2500 HD

LTZ

2011-2016

Chevrolet

Silverado 2500 HD

WT

2015-2016

Chevrolet

Silverado 3500 HD

High Country

2011-2016

Chevrolet

Silverado 3500 HD

LT

2011-2016

Chevrolet

Silverado 3500 HD

LTZ

2011-2016

Chevrolet

Silverado 3500 HD

WT

2015-2016

GMC

Sierra 2500 HD

Base

2011-2016

GMC

Sierra 2500 HD

Denali

2011-2016

GMC

Sierra 2500 HD

SLE

2011-2016

GMC

Sierra 2500 HD

SLT

2011-2014

GMC

Sierra 2500 HD

WT

2015-2016

GMC

Sierra 3500 HD

Base

2011-2016

GMC

Sierra 3500 HD

Denali

2011-2016

GMC

Sierra 3500 HD

SLE

2011-2016

GMC

Sierra 3500 HD

SLT

2011-2014

GMC

Sierra 3500 HD

WT

## Details

- **Price:** 614.87 CAD
- **Vendor:** Wehrli
- **Type:** Intercooler Pipe Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 614.87 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 1
- User 3
- User 1
- User 2
- Logo Image

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-2011-2016-lml-duramax-passenger-side-upper-crossover-intercooler-pipe-kit-gloss-black)
> Updated: 2026-07-03