2018 Subaru WRX STIFACTORY OEM SERVICE PROCEDURE

Fuel Tank: Installation

  1. Support the fuel tank with a transmission jack, set the fuel tank in place, and temporarily tighten the bolts of the fuel tank band.
    WARNING: A helper is required to perform this work.
    G10264912
  2. Tighten the bolts of the fuel tank band in the order shown in the figure.

    Tightening Torque:

    33 N.m (3.4 kgf-m, 24.3 ft-lb)

    G10264914
  3. Install the heat shield cover and stopper.

    Tightening Torque:

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

    G10264911
  4. Install the fuel tank protector. Ref. to FUEL INJECTION (FUEL SYSTEMS) (STI)>Fuel Tank Protector>INSTALLATION .
  5. Connect the vent tube to the vent hose.
    G09487206
  6. Securely insert the fuel filler hose (A) and evaporation hose (B) until the hose end contacts the spool, then attach the clamp or clip as shown in the figure.

    Tightening Torque:

    2.5 N.m (0.3 kgf-m, 1.8 ft-lb)

    G10264909
    G12437400
  7. Install the rear differential. Ref. to DIFFERENTIALS>Rear Differential (T-type)>INSTALLATION .
  8. Install the rear exhaust pipe. Ref. to EXHAUST (STI)>Rear Exhaust Pipe>INSTALLATION .
  9. Connect the quick connector of fuel delivery tube (A) and fuel return tube (B). Ref. to FUEL INJECTION (FUEL SYSTEMS) (STI)>Fuel Delivery, Return and Evaporation Lines>INSTALLATION .
    NOTE: When connecting, be careful not to reverse the delivery side and return side.
    G10264908
  10. Connect the connector to the fuel sub level sensor.
    G10264907
  11. Install the service hole cover of fuel sub level sensor.
    G10264906
  12. Connect the connector to the fuel pump.
    G10264905
  13. Install the service hole cover of fuel pump.
    G08315485
  14. Install the rear seat cushion. Ref. to SEATS>Rear Seat>INSTALLATION .
  15. Connect the battery ground terminal.
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.