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

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