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.
2008 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Ignition System - Ignition (H4SO): General Description: Specification
GENERAL SPECIFICATION
| Item | Specification | ||
|---|---|---|---|
| Engine | Model | 2.5 L SOHC Non-turbo | |
| Ignition coil & ignitor assembly | Type | FH 0286/FH 0363 | |
| Manufacturer | Diamond Electric | ||
| Secondary coil resistance | 11.2k Ξ© Β± 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
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.