The Wehrli Custom Fab Stage 2 4" intake kit for 2017–2019 GM Duramax L5P 6.6L is a high-flow aluminum intake and airbox assembly that replaces restrictive factory plastic components. Its 4" pipe, smooth bends and larger intake horn increase airflow to the turbo for improved horsepower, torque and throttle response; Wehrli reports gains with specific horn sizes. The kit uses factory mounts, stainless T-bolt clamps and a dry filter with pre-filter cover for bolt-on installation.
Wehrli Custom Fab Intake Kit Stage 2, 4in., for 2017-2019 Duramax L5P, Deore Gold
Features & Benefits
Compatible with stock trucks. No other modifications or upgrades necessary!
Seal for Connection to Functional Ram Air Port on Hood
Aluminum Air Box Enclosure with Lid
4" Intake Pipe & 3.5" Intake Horn
Custom Two Stage Powder Coating
Stainless Steel T-Bolt Clamps
Outerwear's Pre-Filter Cover
No Tuning Required, Bolt On!
High Quality Silicone Boot
Dry Air Filter
Manufacturer Description
WCFab 2017-2019 GM L5P 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 hood Ram Air duct and 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. The critical ram air duct seal has been moved to the bottom of the hood for a clean engine compartment appearance. The intake horn is over an inch larger than the OEM diameter and we experienced a 25HP Gain with our 3.5" Horn when used with a Max Effort Tune. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck.
