LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Engine Ignition System (2.5L) >> Spark Plug >> Removal >> RH Side
April 5, 2026: LEMON Manuals is launched! Read the announcement.

RH Side

  1. Disconnect the ground cable from battery.
  2. Remove the air cleaner case. Refer to INTAKE (INDUCTION) (STI)>AIR CLEANER CASE>REMOVAL .
  3. Disconnect the connector from ignition coil.
    CAUTION: Be careful not to damage the claw (a) of the connector.
    G11574057Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the ignition coil.
    NOTE: Turn the ignition coil by 180° to remove it.
    G08539621Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the spark plug with a spark plug socket.
scientia non olet · About LEMON Manuals