Parts for your 2022 Subaru Impreza-Ignition leads

2022 Subaru Impreza ignition-leads: what’s fitted and what to service

For the 2022 Subaru Impreza, traditional ignition-leads (spark plug leads) are not fitted or required. Technical documentation for the FB20 2.0‑litre boxer engine specifies a coil‑on‑plug (COP) direct ignition system, where a dedicated plug‑top ignition coil sits on each spark plug. This is outlined in the Subaru 2022 Impreza Service Manual (Engine/IGNITION section for the FB20), corroborated by the Subaru Owner’s Manual, which lists spark plug replacement but no ignition-lead inspection, and by major parts catalogues (Subaru FAST, NGK and Bosch Part Finders, Repco/NAPA listings) that do not list ignition-leads for this model year and engine.

Ignition-leads were common on older distributor or waste‑spark systems, carrying high voltage from a coil or coil pack to each plug. With COP on the 2022 Impreza, that job is done right at the plug, so there are no high‑tension leads under the bonnet to replace.

• Improved reliability: fewer high‑voltage paths and connectors to degrade.
• Stronger, more consistent spark: each cylinder gets its own coil.
• Less maintenance: no periodic lead replacement, fewer misfires from moisture or insulation breakdown.

So while “ignition-leads” aren’t relevant on this car, there are still sensible ignition maintenance tasks. Plan on replacing the iridium spark plugs at the interval in the service schedule (typically around 96,000–100,000 km, or as specified for local conditions). At service time, a technician should:

• Inspect each coil pack and rubber boot for heat hardening, cracking or carbon tracking.
• Check the engine harness connectors at the coils for secure fit and no corrosion.
• Look for oil in the plug tubes (a sign of tube seal/rocker cover gasket seepage) and address promptly.
• Refit coils to the correct torque and use a light smear of dielectric grease on the coil boot if recommended.

If a misfire code appears (e.g., P0301–P0304), attention should go to the relevant plug and coil, not to non‑existent ignition-leads. Using quality plugs at the right gap and genuine‑spec coils helps the FB20 run smoothly and efficiently on Aussie and Kiwi roads.

Popular questions

Does the 2022 Subaru Impreza have ignition-leads?
No. The FB20 engine uses a coil‑on‑plug ignition system, so there are no conventional high‑tension ignition-leads to replace. Each spark plug has its own plug‑top coil.

What should be serviced instead of ignition-leads on a 2022 Impreza?
Focus on timely spark plug replacement, and inspection of each ignition coil and boot. Check connectors and plug tubes for oil or moisture, and ensure coils are refitted correctly after plug changes.

Can ignition-leads be fitted to convert the system?
No. The engine and ECU are designed for COP. There’s no performance or reliability benefit to retrofitting leads, and it would require extensive, non‑standard changes that aren’t recommended.