Parts for your 2017 Subaru Exiga-Ignition leads

2017 Subaru Exiga ignition leads — not a thing on this model

For the 2017 Subaru Exiga (sold in many markets as the Exiga Crossover 7), traditional ignition leads aren’t fitted or required. This model runs Subaru’s FB-series flat-four with a coil-on-plug ignition system. Each spark plug has its own “pencil” ignition coil that plugs directly onto the top of the plug, so there are no separate high-tension leads to replace.

Technical sources back this up: Subaru’s factory service information for the FB25 engine specifies “pen-type ignition coil integrated with igniter, installed directly to each spark plug, high-tension cord not used.” Subaru’s parts catalogue for the Exiga/Crossover 7 lists four individual ignition coils and spark plugs, with no listing for an ignition lead set. Even the owner’s/service literature for this model family notes spark plug replacement involves removing individual ignition coils rather than disconnecting any leads.

Why did Subaru go this route? Coil-on-plug is more accurate and reliable than old-school leads, helping the ECU control spark timing and strength for cleaner running and better fuel economy. It reduces electrical losses, cleans up the engine bay, and cuts down on misfires caused by ageing cables—handy on a horizontally opposed engine where packaging is tight.

• Better spark energy and timing control for each cylinder
• Fewer failure points compared to long high-tension leads
• Neater packaging and improved reliability in heat and moisture

If the Exiga’s running rough or logging misfire codes (think P0301–P0304), the usual checks are the individual ignition coils, the coil boots, and the spark plugs. Plugs are long-life iridium and typically due around the 100,000 km mark, always fit the correct spec plugs and torque them to Subaru’s spec under a cool engine. Don’t apply anti-seize to modern iridium plugs unless the plug maker explicitly says to. While you’re there, check for oil in the plug tubes (rocker cover/tube seals can seep) and replace any coil with cracked insulation or green corrosion on the terminals. If a shop tries to sell “ignition leads” for a 2017 Exiga, it’s simply not the right part for this vehicle.

Note for earlier Exiga owners: even the earlier EJ20-powered Exiga variants use direct-mounted coils rather than a conventional remote coil-and-lead setup. They may have short boots, but not the old-style lead sets people think of.

Technical references (no external links): Subaru Factory Service Manual (FB25 engine, Ignition System section: “pen-type ignition coil, no high-tension cord”), Subaru FAST/Parts Catalogue for Exiga/Crossover 7 (lists individual ignition coil assemblies per cylinder, no ignition lead set), Owner’s/Service literature for FB-series vehicles noting coil removal for spark plug service.

FAQs

Does a 2017 Subaru Exiga have ignition leads?
No. It uses coil-on-plug ignition with a separate coil mounted directly on each spark plug. That means there are no traditional high-tension leads to service or replace.

If you’re chasing a misfire, focus on the individual coils, the spark plugs, and their boots, rather than looking for a lead set.

What should be replaced during an ignition service on a 2017 Exiga?
Plan on spark plugs at the recommended interval (around 100,000 km for iridium), and inspect each coil and boot for cracks, tracking, or corrosion. Replace any suspect coil and make sure plug tube seals aren’t leaking oil.

Use the correct plug spec, fit them to the right torque on a cold engine, and avoid anti-seize unless the plug maker specifies it.

Can earlier Subaru Exiga models use ignition leads instead?
Earlier Exiga variants also use direct-mounted coils, not conventional lead sets. Some EJ-based versions have short plug boots, but they’re not the same as the old lead-and-distributor setups.

If you’re unsure which engine you have, check the engine code (FB25 vs EJ20) and consult the parts catalogue—if it lists four coils and no cord set, your car doesn’t use leads.