Wehrli Custom Fab 4" intake kit for 2011–2016 GM Duramax LML 6.6L in Bengal Grey. This bolt-on system replaces restrictive factory plastic parts with a fabricated aluminum 4" intake pipe and airbox, drawing cold air from the inner fender to improve flow to the turbo. It includes silicone boots, stainless t-bolt clamps, an outerwear pre-filter cover, plug‑and‑play hardware, and a custom powder coat finish.
Wehrli Custom Fab Intake Kit, 4in., for 2011-2016 Duramax LML, Bengal Grey
Features & Benefits
Silicone Boot & Stainless Steel T-Bolt Clamps
Installs Easily with Basic Hand tools
Includes Installation Hardware
Outerwear's Pre-Filter Cover
No Tuning Required, Bolt On!
Custom powder coat finish
Air Box with Lid
4" Intake Pipe
Dry Air Filter
Made in USA
Manufacturer Description
WCFab 2011-2016 GM LML 6.6L Duramax 4" 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 drawing cold air through the inner fender. All aluminum construction features large diameter 4" piping with smooth aerodynamic bends to improve intake air velocity, volume, and provide more aggressive engine and turbo sound during acceleration. High quality hardware, silicone boot, seals, and stainless steel t-bolt clamps ensure optimum durability and ease of installation. Removable air box lid elementallows for easy visual inspection and maintenance of your WCFab filter with included hydrophobic pre-filter cover, to help keep your MAF sensor, turbo, and engine airways contaminant free. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck.