Video - Learn how to install K&N intake system #69-3539TB on your 2016-17 Ford Focus RS 2.3L

2017-11-06
Get a guaranteed increase in horsepower on your Ford Focus with the K&N 69-3539TB air intake system. It features a mandrel bent aluminum air intake system with a blue powder coated finish and a custom heat shield designed to help isolate the intake air from engine heat. It comes with a custom air scoop and high-flow washable K&N high-flow air filter. It features the K&N 10-year/million mile limited warranty and easily installs with basic hand tools.

The K&N 69-3539TB Air Intake System is guaranteed to increase horsepower on the 2016 to 2017 Ford Focus RS with the 2.3 liter 4-cylinder Ecoboost engine.

It features a free-flowing mandrel-bent aluminum intake tube with a blue powder coat finish, a heat shield with a molded scoop, and a washable, reusable K&N high-flow air filter, and comes with the K&N 10-year million mile limited warranty.

Check KNFilters.com for a complete and up to date list of models this air intake fits.

K&N power testing of the 69-3539TB intake system on a 2016 Ford Focus RS with a 2.3L Ecoboost engine showed an estimated power gain of 33 horsepower and 31.4 pound feet of torque. This intake comes with detailed installation instructions and all necessary hardware.

(Tools needed:)
Flat blade screwdriver
Ratchet
Extension
8mm socket
4mm Allen wrench
  • Start by turning off the ignition and disconnecting the negative battery cable.
  • Lift off the engine cover and remove it from the vehicle.
  • Remove the bolt securing the factory intake tube to the engine.
  • Loosen the hose clamps and unhook the vent line from the intake tube and remove the intake tube from the vehicle.
  • Disconnect the inlet air temperature sensor electrical connection.
  • Release the inlet air duct from the air box.
  • Lift and dislodge the air box from its mounting grommets, and then remove the air box from the vehicle.
  • Remove the inlet air duct from the core support.
  • Install the filter adapter into the heat shield and secure it with the provided hardware.
  • Install the provided edge trim onto the heat shield.
  • Install the heat shield mounting stud onto the heat shield and secure it with the provided hardware.
  • Remove the inlet air temperature sensor and mounting post from the factory air box.
  • Install the mounting post from the previous step onto the K&N heat shield.
  • Install the heat shield assembly into the vehicle so the mounting studs insert into the grommets.
  • Install the provided coupler hose onto the filter adapter and secure it with the provided hose clamp.
  • Install the provided grommet and the factory inlet air temperature sensor into the K&N intake tube, removing the O-Ring from the inlet temperature sensor before installing it into the grommet.
  • Unhook the wiring harness clip from the mounting stud, route the harness next to the coil and fuel line, and secure the harness to the fuel line with the provided tie wrap.
  • Install the K&N intake tube into the factory coupler and then into the K&N coupler, adjust the tube for best fit, and secure it with the provided hose clamps.
  • Reconnect the inlet air temperature sensor electrical connection.
  • Install the K&N air filter onto the filter adapter and secure it with the provided hose clamp.
  • Install the K&N fresh air duct onto the core support and into the K&N heat shield.
  • Using the K&N fresh air duct as a guide, mark the two hole locations onto the fresh air duct in the core support. Next, remove the K&N fresh air duct and drill two quarter inch holes into the factory fresh air duct in the core support at the marked locations.
  • Remove the two clips from the factory inlet air hose.
  • Install the two clips onto the K&N fresh air duct in the factory location.
  • Install the K&N fresh air duct into the heat shield and core support and secure it with the two provided retaining clips.
  • Reinstall the engine cover.
  • Double check to make sure everything is tight and properly positioned before starting the vehicle and check periodically for realignment, clearance, and tightening of all connections. Failure to follow the installation instructions or proper maintenance may void your warranty.
Visit knfilters.com to quickly look up the other products available for your car, truck, or motorcycle, including high-flow air filters, wrench-off oil filters, and washable cabin air filters. Make your move to K&N. Superior air flow, superior performance.

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