2015-2017 Mustang 2.3L I4 EcoBoost Roush Axle Back Exhaust & Cold Air Intake Kit
Part # 421827, 421837-mo
•Fits 2015-2017 I4 2.3L EcoBoost Mustang
•Kit includes Roush 421827 Cold Air Intake & 421837 Axle Back Exhaust System
Cold Air Intake
•Roush Part # 421827
•No Calibration required
•Will not void factory warranty
•Step-down coupler for use with larger turbos
•Air Resources Board approved: EO No. D-418-30
•Improved throttle response
•Increased performance by +30 HP and +28 ft-lbs torque
•74% less intake restriction
•CAD designed for optimized hood sealing and performance
•Easy installation (no drilling or cutting required)
•Reusable Oil-free air filter
•Superior filtration properties
•ROUSH 90-Day Limited Warranty
The all-new 2015 Mustang 2.3L ROUSH EcoBoost Cold Air Kit replaces the restrictive stock air intake, unlocking latent power and fuel efficiency. There’s no need for calibration or a custom tune as this CAI system was engineered and tested to ensure that no calibration changes are required. Paired with Ford’s innovative EcoBoost engine, our ROUSH Cold Air Kit feeds cooler, denser air to the Turbo, increasing potential power output by up to 29 HP and 27 Lb-ft of torque. Our kit is 74% less restrictive than the stock system at peak horsepower.
An innovative dry filter is composed of two layers of wire mesh for durability and is proven to retain its shape under high airflow. The filter is washable, re-usable and requires no oiling.
Included in the kit is the air filter with clamp, injection-molded lower air box/tray with installed EPDM foam hood seal, Blow Molded clean air tubes, heat extractor foam insert, and all required mounting hardware. The kit utilizes all factory emissions and vacuum lines. Factory mounting locations and hardware are utilized to allow for quick and easy installation.
Axle Back Exhaust System
•Roush Part # 421837
•Fits 2015-2017 Ford Mustang 2.3L Ecoboost Coupe or Convertible
•Sold as a pair (RH & LH)
•ROUSH designed Single tip high-flow mufflers
•Corrosion resistant 304 stainless steel
•Full mandrel bending
•4" Flash-chromed dual wall tips
•Uses OEM hangars and mounting points
•Requires no welding
•Some cutting required
Despite being the least expensive engine option in the 2015 Mustang the V6, with 300HP on tap, is still very potent. Shouldn’t the exhaust note reflect that? Constructed from T-304 stainless steel, the 2015 ROUSH V6 exhaust is corrosion and stain resistant. Constant diameter mandrel bends maintain high flow and reduce backpressure. This axle back system improves sound and performance with single tip High flow Mufflers.
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