2015-2017 Mustang GT 5.0L V8 Roush Cold Air Intake & Axle Back Exhaust System

•Brand New
•Fits 2015-2017 Mustang GT
•Does not fit supercharged engines
•Kit includes Roush 421826 Cold Air Intake & 421834BK Axle Back Exhaust System w/ Black Tips

Cold Air Intake
•Roush Part # 421826
•No Calibration required
•Will not void warranty
•Not approved for sale in California or states that require a California E.O. #.
•Improved throttle response
•Two CAI systems in-one; 85mm MAF insert for factory calibration Or no insert for 105mm MAF bore (105mm REQUIRES tune)
•Increased performance by 10.4 HP and 8.54 ft-lbs torque
•38% less intake restriction compared to stock induction system in forced induction applications
•CAD designed for optimized hood sealing and performance
•Easy installation (no drilling or cutting required)
•Includes all necessary hardware & instructions
•Reusable Oil-free air filter
•Superior filtration properties
•ROUSH 90-Day Limited Warranty

Kit contains
•Oversized Airbox Tray and Air Filter
•Clean Air Tube (Engine Side)
•105mm Mass Air Flow (MAF) Tube
•Cold Air Inlet Tube (Vehicle Side)
•85mm Mass Air Flow (MAF) Tube Insert
•Hood Seal and Hardware Kit

The all-new 2015 Mustang 5.0L ROUSH V8 Cold Air Kit is more efficient air-intake than the standard stock air box. Cold air induction allows for latent potential in power and fuel efficiency that would otherwise be restricted, as well as providing reduced pressure drop. A custom tune is not required as this CAI system was engineered and tested specifically for this application ensuring MAF signal performance matches factory settings. As a straight bolt on, with no tune, it’s possible to see gains of 10hp and 8 lb-ft of torque, a noticeable increase. With this kit you can also remove the MAF insert for a 105mm bore MAF and Custom tune your PCM for even more power.

Our dry filter is proven to retain its shape under high airflow and is composed of an inner and outer layer of wire mesh for durability and reliable support of filtration media. The filter requires no oiling and is easily washable for re-use.

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 # 421834BK
•Fits 2015-2017 Ford Mustang GT 5.0L Fastback 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
•Tips have been powder-coated black
•Uses OEM hangars and mounting points
•Requires no welding
Give your 2015 5.0L Mustang a more aggressive sound and boost performance with a ROUSH exhaust system. 2015 ROUSH Axle Back exhaust systems are constructed of corrosion resistant T-304 stainless Steel and are mandrel bent. Mandrel bending maintains a constant inner diameter with no kinks or creases. This improves exhaust flow and reduces backpressure in the system. This system includes single tip High flow mufflers that improve the stock sound of the Mustang V8

Listen Here!

Outside Take Off
Inside Take Off
Outside Drive By