Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Subaru Outback F4-2.5L SOHCFACTORY OEM SERVICE PROCEDURE
Spark Plug
Spark plug
Thread size (diameter, pitch, length) 14 mm, 1.25 mm, 19 mm
Spark plug gap Standard 1.0 -- 1.1 mm (0.039 -- 0.043 in)
Tightening torque (Spark plug) 21 N.m (2.1 kgf-m, 15.5 ft-lb)
Thread size (diameter, pitch, length) 14 mm, 1.25 mm, 19 mm
Spark plug gap Standard 1.0 -- 1.1 mm (0.039 -- 0.043 in)
Tightening torque (Spark plug) 21 N.m (2.1 kgf-m, 15.5 ft-lb)
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.