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Wehrli 3.5" intake horn with PCV port for 2017–2019 6.6L L5P Duramax in gloss white ups the inlet from the OEM 2.4" to a larger 3.5" diameter for improved airflow. The horn fits stock trucks and works with OEM or aftermarket intake kits; Wehrli notes a 25 HP gain when paired with a Max Effort tune, but it also functions without mandatory tuning. Supplied with mounting studs, nuts and O-ring.
Wehrli 17-19 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - Gloss White
