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 MANUALSSUBARU1998LEGACY OUTBACK SPORT AWD F4-2.2L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
1998 Subaru Legacy Outback Sport AWD F4-2.2L SOHC
Piston, Engine
1998 Subaru Legacy Outback Sport AWD F4-2.2L SOHCSECTION Piston, Engine
Outer Diameter:
Standard:
A 96.885 - 96.895 mm (3.8144 - 3.8148 inch)
B 96.875 - 96.885 mm (3.8140 - 3.8144 inch)
0.25 mm (0.0098 inch):
Oversize 97.115 - 97.145 mm (3.8234 - 3.8246 inch)
0.50 mm (0.0197 inch):
Oversize 97.365 - 97.395 mm (3.8333 - 3.8344 inch)
Standard:
A 96.885 - 96.895 mm (3.8144 - 3.8148 inch)
B 96.875 - 96.885 mm (3.8140 - 3.8144 inch)
0.25 mm (0.0098 inch):
Oversize 97.115 - 97.145 mm (3.8234 - 3.8246 inch)
0.50 mm (0.0197 inch):
Oversize 97.365 - 97.395 mm (3.8333 - 3.8344 inch)
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.