WCFAB 2004.5-2005 LLY Duramax 4" Intake Kit with Air Box GM 2017 The IFP eliminates oil aeration

The IFP eliminates oil aeration allowing maximum performance from the factory-tuned precision valving

These improvements are accomplished through application of Cognito's innovative

The end result is an emissions-friendly

Extended (in): 18

WCFAB 2004.5-2005 LLY Duramax 4" Intake Kit with Air Box GM 2017 The IFP eliminates oil aerationPowdercoat colors can be found here! WCFab 2004. 5 2005 LLY 6. 6L Duram" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on your diesel for improved engine performance. All new design significantly increases air flow to your turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by