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Home >> Subaru >> 2020 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.5L) >> Knock Sensor >> Installation
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Knock Sensor: Installation

  1. Install the knock sensor to the cylinder block.
    NOTE: The portion of the knock sensor cord that is pulled out must be positioned at a 60° angle relative to the engine rear.

    Tightening torque: 

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

    G13640086Courtesy of SUBARU OF AMERICA, INC.
  2. Install the secondary air combination valve RH. Refer to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (STI)>SECONDARY AIR COMBINATION VALVE>INSTALLATION>SECONDARY AIR COMBINATION VALVE RH .
  3. Install the intake manifold. Refer to FUEL INJECTION (FUEL SYSTEMS) (STI)>INTAKE MANIFOLD>INSTALLATION .
  4. Install the intercooler. Refer to INTAKE (INDUCTION) (STI)>INTERCOOLER>INSTALLATION .
  5. Connect the battery ground terminal.