Ignition Coil & Iridium Spark Plugs for Subaru Impreza (2013-2015) 2.0L H4

Premium Ignition Coil & Iridium Spark Plugs for 2013-2015 Subaru Impreza (FB20 / GJ/GP)

Restores factory ignition efficiency and eliminates misfires for the 2.0L FB20 engine.

The Stock Impreza Ignition Weakness

The OEM FB20 ignition coils are prone to thermal degradation over high mileage, a condition exacerbated by the localized heat soak inherent to the horizontally opposed boxer engine layout. As the internal primary and secondary windings break down, voltage output drops, leading to high-RPM misfires, rough idling, and diminished fuel economy. Furthermore, standard or aging spark plugs will rapidly erode their gap under the sustained operating temperatures of the 2.0L engine. This widening gap accelerates the dielectric strain on the coil packs, ultimately causing premature, cascading failures across the ignition system.

The Engineering Solution

This ignition coil and iridium spark plug kit delivers a comprehensive electrical overhaul for the GJ and GP chassis. The replacement coils feature upgraded high-temperature epoxy potting and heavy-duty copper wire windings to resist heat soak and maintain consistent voltage output under demanding loads. Paired with laser-welded iridium center electrode spark plugs, this kit ensures a highly concentrated, stable spark front. The ultra-fine iridium design requires significantly lower firing voltage, reducing the electrical burden on the ignition coils while preventing gap expansion over extreme mileage intervals. This mechanical synergy yields complete cylinder combustion, stabilizing idle vacuum and restoring linear throttle response.

Technical Specifications

Compatibility

• 2013 Subaru Impreza 2.0L H4 (Base, Premium, Limited, Sport Premium, Sport Limited)
• 2014 Subaru Impreza 2.0L H4 (Base, Premium, Limited, Sport Premium, Sport Limited)
• 2015 Subaru Impreza 2.0L H4 (Base, Premium, Limited, Sport Premium, Sport Limited)

The Subaru Standard

For JDM platforms, dependable power delivery is critical for reliable all-wheel-drive performance. This kit ensures your Impreza maintains precise ignition timing, smooth acceleration, and consistent fuel efficiency without throwing nuisance CEL codes.