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The Wehrli Custom Fab Stage 2 4in intake kit for 2004.5-2005 Duramax LLY upgrades the factory system with a fabricated aluminum pipe, air box and a high-flow 4.8in cast aluminum turbo intake horn to reduce restrictions and improve turbo spool and top-end power. The assembly includes a dry filter with pre-filter cover, stainless t-bolt clamps and installs with basic hand tools as a bolt-on upgrade.
Wehrli 2004.5-2005 LLY Duramax 4in Intake Kit with Air Box Stage 2 WCFab- Grey
