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Home >> Subaru >> 2003 >> Impreza Outback Sport, Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - SOHC >> Spark Plug >> Installation >> LH Side

LH Side

Install in the reverse order of removal.

  1. Tightening torque (Spark plug):  21 N.m (2.1 kgf-m, 15.2 ft-lb)
NOTE: The above torque should be only applied to new spark plugs without oil on their threads.
In case their threads are lubricated, the torque should be reduced by approximately 1/3 of the specified torque in order to avoid over-stressing.