The Stage 2 upgrade for the 2013-2018 4th Gen Ram with 6.7L Cummins diesel engine combines our Stage 1 High Flow Bundle and 4" Cold Air Intake Kit with Air Box into a single package providing increased airflow for your turbo and engine for improved efficiency, throttle response, and turbo spool up. - - Replaces the poorly flowing, small diameter, crushed, factory pipes with our heavy duty, high flowing 3.5" Diameter Pipes. Kit includes upgraded high quality silicone boots that withstand higher pressure and temperatures than the factory boots to increase reliability and eliminate blown factory boots. Made in the USA from high strength, heavy duty 14 ga. aluminum tube with smooth, aerodynamic mandrel bends for increased durability and optimized flow. - - The 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 and ram air duct in the grille. 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 element allows 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. Air box provides mounting provision for the OEM air box actuator so that it can remain plugged in for CEL free operation, but keeps both grille and fender ports fully open for maximum air flow to your turbo.. Full assembly finished in your choice of WCFab's signature custom powder coat colors for a look as unique as your truck. - - Intercooler piping replaces MOPAR part numbers: 52014734AC, 52014734AA, 52014734AB, 52014735AB, 52014735AA - - Intake Kit replaces MOPAR Part Numbers: 53032944AL, 53032944AC, 53032944AD, 53032944AE, 53032944AF, 53032944AG, 53032944AH, 53032944AK, 68137142AC, 68137142AB. Wehrli Custom Fabrication 2013-2018 6.7L Cummins Stage 2 High Flow Bundle Kit Kit, WCFab Red. Replaces the smaller, restrictive factory pipes with high flowing 3.5" diameter pipes. Includes Installation Hardware, Silicone Boots and Stainless Steel T-Bolt Clamps. Wehrli 13-18 Cummins 6.7L Stage 2 High Flow Bundle Kit - WCFab Red. High Flow Bundle Kit Stage 2, 13-18 Cummins 6.7L, WCFab Red. Eliminates OEM Turbo / Intake Silencer (Resonator). Air Box & Lid Constructed of 10G Aluminum Sheet. Dry Air Filter w/ Outerwear's Pre-Filter Cover. Hi Flo Kit Stg 2 13-18 Cummins WCFab Red. Not compatible with Banks Intercoolers. Durable Custom Powder Coat Finish. 14ga HD Aluminum Construction. No Tuning Required, Bolt On!. Hi Flo S2 13-18 RED. Includes CCV Port. Air Intake Kit. Made in USA. 4" Intake

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