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The 3.5" High Flow Passenger Side Intercooler Pipe for 2011-2016 LML Duramax replaces the factory plastic two-piece pipe with a high flow, 14 ga. aluminum one piece 3.5" pipe. This part uses upgraded silicone boots to withstand higher boost pressures than the factory components to increase reliability and eliminate blown factory boots and horsepower-robbing boost leaks. Finished in your choice of custom powder colors. This pipe is compatible with stock trucks requiring no additional modifications, upgrades, or tuning for installation. - - Improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard-working and high-performance applications. - - 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: 22737494, 20930188, 23421455, 84094727
Wehrli Custom Fab Passenger Side 3.5 in. Intercooler Pipe, 11-16 Duramax LML, Gloss Black
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It is listed for: 2011-2016 Chevrolet Duramax. Pick your vehicle on this page to check your exact year and trim.
No — this part has no CARB Executive Order, so it is not for sale or use in California or on vehicles registered there.
No tune is required for a larger intercooler on its own; it lowers the charge-air temperature with the stock tune, and tuned cars gain the most from it.
The core and end tanks, plus the couplers and clamps the kit calls for; some kits include new piping. Check What's in the box.
Kits are built to fit the listed cars. Some need the bumper trimmed or the crash bar moved, and the maker's guide says so.
An air-to-air intercooler needs no fluids. Water-to-air kits reuse or add a coolant loop.
A larger core and better end-tank design keep the intake air cooler under sustained load, so the engine makes steady power on a hot day or on track.
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IN STOCK (12 units)