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.
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HOMESERVICE MANUALSSUBARU2002LEGACY L SEDAN AWD F4-2.5L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSIGNITION SYSTEMSPARK PLUG
2002 Subaru Legacy L Sedan AWD F4-2.5L SOHC
Spark Plug
2002 Subaru Legacy L Sedan AWD F4-2.5L SOHCSECTION Spark Plug
SPECIFICATIONS
Spark Plug Thread Size 14, P = 1.25 mm
Spark Plug Spark Gap 1.0 - 1.1 mm (0.039 - 0.043) in
SPARK PLUG
RH SIDE
Tightening torque (Spark plug): 21 Nm (2.1 kgf-m, 15 ft-lb)
CAUTION: 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.
Tightening torque (Resonator chamber): 33 Nm (3.4 kgf-m, 24.6 ft-lb)
LH SIDE
Tightening torque (Spark plug): 21 Nm (2.1 kgf-m, 15 ft-lb)
CAUTION: 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.
Spark Plug Thread Size 14, P = 1.25 mm
Spark Plug Spark Gap 1.0 - 1.1 mm (0.039 - 0.043) in
SPARK PLUG
RH SIDE
Tightening torque (Spark plug): 21 Nm (2.1 kgf-m, 15 ft-lb)
CAUTION: 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.
Tightening torque (Resonator chamber): 33 Nm (3.4 kgf-m, 24.6 ft-lb)
LH SIDE
Tightening torque (Spark plug): 21 Nm (2.1 kgf-m, 15 ft-lb)
CAUTION: 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.
RENDER: 1.0x
NO RELATED
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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.