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Home >> Subaru >> 2015 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Engine Ignition System (STI) >> Spark Plug >> Installation >> RH Side
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RH Side

Install in the reverse order of removal.

Tightening torque (Spark plug): 

21 N.m (2.1 kgf-m, 15.5 ft-lb) 

Tightening torque (Ignition coil): 

16 N.m (1.6 kgf-m, 11.8 ft-lb)