Parts for your 2013 Subaru Forester-Ignition leads

Ignition leads on the 2013 Subaru Forester

For the 2013 Subaru Forester, ignition leads (high‑tension spark plug wires) are not fitted or used. Technical references — including the Subaru Forester SJ (2013–2018) workshop manual ignition system description, Subaru’s global parts catalogue (FAST) for MY2013 Forester, and NGK/NTK and Bosch application catalogues — all identify a direct ignition, coil‑on‑plug arrangement across the 2013 Forester range. That includes the 2.5‑litre FB25 petrol and the 2.0‑litre turbo models, which mount an individual ignition coil directly on each spark plug, eliminating traditional leads.

Why the change? Coil‑on‑plug offers cleaner spark energy without the losses that come from long high‑tension leads. It improves timing accuracy, reduces electrical interference, and shrinks the number of wear items under the bonnet. It’s also less prone to moisture tracking and arcing, which were common reasons older leads would fail.

For owners chasing a misfire or rough running, the focus shouldn’t be on leads (there aren’t any) but on the service items the system does use:

• Spark plugs: iridium plugs are typically due around the 100,000 km mark (or as per the vehicle’s service logbook for local conditions).
• Coils and boots: inspect for cracking, carbon tracking and oil contamination in the plug tubes, replace any suspect coil or boot.
• Electrical checks: scan for misfire codes (P0300–P0304), verify coil power/ground, and confirm good battery and charging health.

If someone lists “ignition leads” for a 2013 Forester, it’s usually a catalogue mismatch or a generic category label. The correct parts will be spark plugs, individual ignition coils, and sometimes the coil boots. If in doubt, confirm by engine code (FB25/FA20F) and VIN, but for 2013 Forester models sold in Australia and New Zealand, traditional ignition leads aren’t part of the design.

FAQs

Does a 2013 Subaru Forester have ignition leads?
No. It uses a coil‑on‑plug ignition system with one coil per cylinder, so there are no traditional high‑tension leads to replace.

What should be serviced instead of ignition leads on a 2013 Forester?
Treat spark plugs, coil boots, and the coils themselves as the primary service items. Replace plugs around 100,000 km (or per the logbook), and inspect coils/boots for cracking or tracking if there’s a misfire.

Can ignition leads be fitted to convert the system?
No practical or recommended conversion exists. The engine management and hardware are designed for direct ignition. If a parts listing shows leads for this model, it’s almost certainly an application error.