Wehrli 17-19 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - Gloss Black Windshields>Window Shades This system contains Borla(r)'s Polyphonic

This system contains Borla(r)'s Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean

Upgraded greasable ball joints

This 7-1/2 IN tall 360-degree radial flow air filter features a 4" flange and our oil-free Pro DRY S media with three layers of synthetic media for maximum convenience

ICON's Vehicle specific tuned 2

Wehrli 17-19 Chevrolet 6.6L L5P Duramax 3.5in Intake Horn w/PCV Port - Gloss Black Windshields>Window Shades This system contains Borla(r)'s Polyphonic3 1 2" Turbo Intake Horn for the 2017 2019 L5P Duramax with factory style Turbo. The OEM plastic intake horn is 2. 4" diameter and we experienced a 25HP Gain with our 3. 5" Horn when used with a Max Effort Tune. Tuning not required, this horn will work with plug and play tuners or OEM calibration.