2018 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

STI Model

  1. Insert the gear shift lever from the bottom of the vehicle.
    NOTE: After inserting the rod and stay, temporarily put them onto transmission mount.
  2. Install the cushion rubber.

    Tightening Torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb)

  3. Move the transmission to the right side of the vehicle, and install the joint COMPL and stay.

    Tightening Torque: 

    T1: 12 N.m (1.2 kgf-m, 8.9 ft-lb)

    T2: 32 N.m (3.3 kgf-m, 23.6 ft-lb)

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  4. Install the reverse check cable, washer and snap pin.
    NOTE: Pay attention to the installing direction of the snap ring.
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  5. Make sure the hole of extension case is aligned with that of reverse check lever. If the hole positions are not aligned, adjust the reverse check cable. Ref. to CONTROL SYSTEMS>Reverse Check Cable>ADJUSTMENT 
    NOTE:
    • Check that the M3 bolt goes through the hole of reverse check lever and can be inserted into the hole of extension case.
    • When checking visually, confirm that the gap of hole positions is 0.5 mm (0.02 in) or less.
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  6. Install the crossmember. Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (6MT) (TY85)>Transmission Mounting System>INSTALLATION
  7. Install the center exhaust cover.
  8. Install the center exhaust pipe (rear). Ref. to EXHAUST(STI)>Center Exhaust Pipe>INSTALLATION
  9. Install the plate COMPL.
    NOTE: Be careful not to twist the inner boot when installing.

    Tightening Torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb)

    1. Set the plate COMPL to the vehicle.
    2. Temporarily tighten the bolt (A).
    3. Tighten the bolt (B).
    4. Tighten the bolt (A).
    5. Tighten the bolts (C) and (D).
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  10. Install the harness clamp to the plate COMPL.
  11. Install the boot and insulator assembly, and secure with a clamp.
  12. Install the panel center LWR LH and RH. Ref. to EXTERIOR/INTERIOR TRIM>Console Box>INSTALLATION
  13. Install the cover - shift lever. Ref. to EXTERIOR/INTERIOR TRIM>Console Box>INSTALLATION
  14. Install the console box assembly. Ref. to EXTERIOR/INTERIOR TRIM>Console Box>INSTALLATION
  15. Install the gear shift knob by turning it clockwise.
    CAUTION: Do not turn the gear shift knob excessively to prevent it from being damaged.
  16. Make sure the gears can be shifted accurately into each gear.
  17. Connect the battery ground terminal. Ref. to NOTE>BATTERY
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:

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

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