ThunderSpark Ignition Coil P/N:921-2437

Deliver the high-voltage spark your engine needs to fire cleanly with the ThunderSpark Ignition Coil 921-2437. It's a direct-fit replacement for the 2013-2014 Subaru Impreza, 2013-2014 Subaru XV, 2013-2014 Subaru XV Crosstrek, and 2013-2014 XV Crosstrek, restoring the ignition spark on the listed applications.

• Core job: Steps up the vehicle's low battery voltage into the high voltage required to jump the spark plug gap and ignite the air-fuel mixture in the cylinder.
• Direct-fit design: Made to install on the listed applications as a replacement for a worn or failed original coil.
• Signs it may need replacing: Engine misfires, rough idle, hesitation, hard starting, or an illuminated check engine light — if a failed ignition coil is the cause, this unit replaces it.

Because a misfire can stem from other causes such as spark plugs, wiring, or fuel delivery, diagnose the source before replacing. If the original coil is confirmed faulty, the 921-2437 restores proper ignition operation on the covered Subaru models.

Manufacturer part number 921-2437 (also 9212437).