The K&N 63-2590 is a complete intake replacement for the 2015 Ford Mustang GT's 5.0L Coyote V8. The intake tube is roto-molded from high-density polyethylene, and it pairs with an oversized conical filter made of oiled cotton that can be washed and reused. The kit replaces the factory filter and intake tube, and the manufacturer says the filter needs cleaning only about every 100,000 miles of normal highway driving. Buyers searching for a 2015 Mustang GT cold air intake, a 63-2590 upgrade, or a reusable oiled air filter for the Coyote will find this kit covers those needs.
The case for spending roughly $368 over a stock airbox rests on airflow and filter life, not a guaranteed plug-in power gain. K&N's own dyno sheet, from a single test run on a 2015 GT, lists an estimated 17.41 hp at 5,287 rpm and 21.0 lb-ft at 4,029 rpm. Owners on user forums are more skeptical: several say gains without an ECU tune are small or hard to feel, and one reported little noticeable change. If you want the fullest result, plan on pairing the intake with a tune. A drop-in K&N filter alone is the budget route that forum members often recommend, while this kit adds a larger filter and a smoother intake path.
Fitment centers on the 2015 Mustang GT with the 5.0L V8. The manufacturer's install sheet puts the job at about an hour with simple hand tools. The main DIY gotcha is the oiled filter: forum users warn that over-oiling can foul the mass airflow sensor, so apply oil sparingly and let the filter dry fully before reinstalling. After installation, K&N's general high-flow guidance recommends rechecking alignment, clearance, and connection tightness periodically.
The manufacturer promotes a guaranteed increase in horsepower and torque and publishes a dyno result. Owners on user forums report that gains without a tune are modest, and some have felt little difference. Confirm tuning expectations with the manufacturer before buying.
The manufacturer states the filter needs cleaning about every 100,000 miles under normal highway driving. Owners on user forums clean K&N filters with a recharge kit: apply cleaner, rinse and dry completely, then lightly re-oil before reinstalling.
Fitment details vary across published sources. Confirm model-year coverage with the manufacturer before ordering.
This is a bolt-on job that the manufacturer says typically takes about an hour with simple hand tools. Expect to remove the factory airbox and intake tube, fit the heat shield and filter assembly, and connect the new tube. Be careful when re-oiling the filter, because over-oiling can contaminate the mass airflow sensor. After the first drive, check all clamps and connections for tightness and alignment.
