WCFAB 2004.5-2005 LLY Duramax 4" Intake Kit with Air Box GM 2017 These improvements are accomplished through

These improvements are accomplished through application of Cognito's innovative

Extended (in): 18

The end result is an emissions-friendly

Firestone has risen to be one of the leading manufacturers of commercial air springs

• Internally rated to over 2500°F direct heat

WCFAB 2004.5-2005 LLY Duramax 4" Intake Kit with Air Box GM 2017 These improvements are accomplished throughPowdercoat 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