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Description
Wehrli 11-16 LML Duramax Passenger Side Upper Crossover Intercooler Pipe Kit - Bengal BlueThe 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
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: 12642321This 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 |
Shipping Notes
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
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Product Reviews
★★★★★ 5
Outboard thermostat
Works fine. A little pricey but better to buy the best than risk a cheap failure and destroy your engine like i did once.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Good
Good
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Works as it should
Works as it should
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Reviewed in the United States on March 24, 2026
★★★★★ 4
Four Stars
Just what I needed
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Reviewed in the United States on October 14, 2016
★★★★★ 5
Functioned as advertized.
Installed these in my Whalers 96 200 Offshore. No issues, used permatex gasket compound on aluminum engine parts after cleaning with fine brass wire wheel.
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Reviewed in the United States on November 20, 2024