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The WCFab 3.5" turbo intake horn for 2017–2019 Chevrolet 6.6L L5P Duramax replaces the factory 2.4" plastic horn with a larger inlet and includes a PCV port. It installs on a stock truck and works with OEM calibration or plug-and-play tuners. Wehrli reports a 25 HP gain when paired with a Max Effort Tune. Finished in WCFab red, it ships with mounting studs, nuts and an O-ring for sealing.
Wehrli 17-19 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - WCFab Red
