2020 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

RH Side

  1. Install the knock sensor to the cylinder block.
    NOTE: The knock sensor should be installed so that the center of the connector is positioned at a 32.5 - 47.5Β° angle relative to the rear of engine.

    Tightening torque:Β 

    24 N.m (2.4 kgf-m, 17.7 ft-lb)

    G13641171Courtesy of SUBARU OF AMERICA, INC.
  2. Connect the connector to the knock sensor.
    G09479755Courtesy of SUBARU OF AMERICA, INC.
  3. Install the fuel pipe insulator No. 3. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>FUEL INSULATOR>INSTALLATION>FUEL PIPE INSULATOR NO. 3Β .
  4. Install the intake manifold. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>INTAKE MANIFOLD>INSTALLATIONΒ .
  5. Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
  6. Install the collector cover. Refer to INTAKE (INDUCTION) (W/O STI)>COLLECTOR COVER>INSTALLATION .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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