The K&N 63-1132 AirCharger is a complete replacement intake for the 2011-2016 BMW 535i, built around the turbocharged 3.0-liter inline-six. Instead of only swapping the filter, it replaces the factory air box, paper filter and intake tube with a black roto-molded high-density polyethylene tube, a heat shield, and a washable, reusable oiled-cotton High-Flow filter. A drop-in filter leaves the restrictive factory tube in place, so this kit is the better choice for a buyer who wants more airflow from the N55 intake path. K&N's own dyno test on a 2012 535i estimated roughly 13.5 hp and 13.4 lb-ft of torque, though that was a single estimate rather than a guaranteed figure. Owners on user forums generally describe intake-only gains on this platform as modest and most noticeable at higher RPM and boost.
Fitment covers the 2011-2016 BMW 535i, 535i xDrive, 535i GT and 535i GT xDrive, all with the 3.0L L6 engine. Cold air intake shoppers searching for an F10 535i N55 intake, a 63-1132 install, or a washable oiled cotton filter for the 535i will find that this kit targets the exact model years listed. Verify your model and year against the manufacturer's application chart before ordering, especially for GT variants, and confirm the install sheet matches your car.
The manufacturer's application listing includes the 535i, 535i xDrive, 535i GT and 535i GT xDrive for model years 2011 through 2016, all with the 3.0L L6 engine. Confirm your specific model against the manufacturer's fitment chart before ordering.
The manufacturer states the filter only needs cleaning about every 100,000 miles under normal highway driving conditions. Driving in dusty or harsher conditions will call for more frequent checks, and the filter should be cleaned with K&N's recommended kit rather than harsh solvents.
Per the manufacturer's install documentation, the AirCharger is street legal in all other US states but is not legal for sale or use in California on any pollution-controlled motor vehicle.
The manufacturer lists installation as typically 60 minutes or less using simple hand tools, and it provides a dedicated installation instruction sheet for this kit. The job means removing the factory air box and intake tube, fitting the HDPE tube and heat shield, and reseating the filter. Owners on user forums warn that oil from an oiled filter can migrate onto the sensor in the airbox, so clean the filter carefully and keep oil away from that sensor. Give the clamps a firm, even tightening so the joints do not leak unfiltered air.
