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.
2005 Subaru Outback i, AutomaticFACTORY OEM SERVICE PROCEDURE
U5 Model
IGNITION (H4SO) SPECIFICATION
| Item | Specification | |
|---|---|---|
| Engine | Model | 2.5 L SOHC Non-turbo |
| Ignition coil and ignitor ASSY |
Type | FH0137 |
| Manufacturer | DEMCO | |
| Secondary coil resistance | 12.8 kΞ©+/-15% | |
| Spark plug | Manufacturer and type | NGK: FR5AP-11 |
| Thread size (diameter, pitch, length) mm | 14, 1.25, 19 | |
| Spark plug gap mm (in) | 1.0 - 1.1 (0.039 - 0.043) | |
| Electrode | Platinum | |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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