2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Section 11 (Engine Cooling System (2.5L)): Radiator: Installation

WARNING: This page is about a different variant/trim than selected.
  1. Attach the radiator lower cushion to the radiator lower bracket.
    G10265569Courtesy of SUBARU OF AMERICA, INC.
  2. Install the radiator to vehicle.
    NOTE: Make pins on the lower side of radiator be fitted into the radiator lower cushions.
  3. Install the radiator upper brackets.

    Tightening torque: 

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

    G10265568Courtesy of SUBARU OF AMERICA, INC.
  4. Connect the two engine coolant hoses to the radiator and over flow pipe.
    G08539506Courtesy of SUBARU OF AMERICA, INC.
  5. Connect the radiator inlet hose.
    G08539505Courtesy of SUBARU OF AMERICA, INC.
  6. Lift up the vehicle.
  7. Connect the radiator outlet hose.
    G08539497Courtesy of SUBARU OF AMERICA, INC.
  8. Connect the connector (A) to the main fan motor and the connector (B) to the sub fan motor.
    G08539502Courtesy of SUBARU OF AMERICA, INC.
    G08539503Courtesy of SUBARU OF AMERICA, INC.
  9. Install the under cover. Refer to EXTERIOR/INTERIOR TRIM>FRONT UNDER COVER>INSTALLATION .
  10. Lower the vehicle.
  11. Install the reservoir tank. Refer to COOLING(STI)>RESERVOIR TANK>INSTALLATION .
  12. Install the air intake duct. Refer to INTAKE (INDUCTION) (STI)>AIR INTAKE DUCT>INSTALLATION .
  13. Connect the battery ground terminal.
  14. Fill engine coolant. Refer to COOLING(STI)>ENGINE COOLANT>REPLACEMENT>FILLING OF ENGINE COOLANT .
Chapter Navigation
Return to Chapter: Radiator
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.