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2011-2014 Mustang GT 5.0 Roush Cold Air Intake Kit & Axle Back Muffler Exhaust

Manufacturer Part # 420131, 421127

SKU RH4670
Original price $1,099.98 - Original price $1,099.98
Original price
$1,099.98 - $1,099.98
Current price $1,099.98
Only 1 left!

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•By Roush Performance
•Kit includes cold air intake kit and axle-back exhaust kit
Please Note: The intake is not eligible for use in California and is not CARB stamped or certified.

•Brand New Parts About the CAI:

•Increased power by up to 8 horsepower and 8 ft-lbs of torque
•Increased fuel mileage
•Improved throttle response
•Reduced pressure drop
•Easy installation (no drilling or cutting required)
•Tray and tube made with high quality materials and tooling
•Superior structural capability, stability, and durability
•Fits 2010-2014 Mustang GTs

Includes the following:

•Custom high-flow ROUSH® air filter with clamp
•MAF tube
•Airbox tray with installed EPDM foam hood seal
•Mounting hardware

Upgrade your 2011-2014 Ford Mustang GT with this Cold Air Intake Kit and unleash up to an additional 8 hp and 8 ft-lb of torque out of your engine, while increasing your fuel efficiency. The kit a custom high-flow ROUSH® air filter with clamp, MAF tube, airbox tray with installed EPDM foam hood seal, and mounting hardware.

Cold air induction is a more efficient air intake method than the standard air filtering process. As a result, cold air induction can unleash the latent potential in power and fuel efficiency that is normally restrained by your stock air intake unit.

The benefits of this kit include reduced pressure drop and increased performance and efficiency. Both the tray and MAF tube are manufactured using OE-quality materials (30% glass-filled polypropylene) and tooling (fully CNC machined hardened steel plastic injection molds). These provide excellent dimensional capability, stability, and long term durability and performance.

NOTE: This product does NOT fit ROUSHcharged™ vehicles

About the Exhaust:

•Distinct aggressive sound (sound clips available at
•Uses 409 stainless steel in the construction of the pipes and muffler.
•Roush exclusive open-chambered design that will not deteriorate over time unlike conventional fiberglass roving material.
•Exhaust tips are made from 304 stainless steel and finished with a unique chrome flashing process.
•Chrome-flashing on tips provides heat resistance to color change.
•No negative impact on any type of emission devices.
•Hollow chamber yields higher airflow.
•Highly tuned system avoids the annoying in-cockpit boom, which can occur with competitive systems.
•Fits both Ford factory and Roush rear valance.
•Tips have oval-shaped openings - 4" wide x 4.5" tall

Installation is quick, easy, and uses all factory hanger locations and pierce points. No modifications to the vehicle are necessary. All the hangers are chromed for superior appearance and corrosion resistance. New, high quality OE-spherical clamps are included in the kit.

Exhausts and engine compartment parts may not be compatible with foreign-built vehicles. Our inventory is only guaranteed to fit the listed models and years in this auction with North America as the country of origin. Our exhaust & engine parts may likely not work with foreign-built cars, and the customer assumes their own risk in any attempt.

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