Beck/Arnley Direct Ignition Coil P/N:178-8588
Deliver a strong spark and consistent firing with the Beck/Arnley direct ignition coil 178-8559, a direct-fit replacement for the 2017-2018 Subaru Forester (H4-2.0L, H4-2.5L) and the 2015-2021 Subaru WRX (H4-2.0L). This coil-on-plug unit steps up battery voltage to the high voltage needed to fire the spark plug, and it's engineered to match the original equipment form, fit and function for these foreign-nameplate applications.
Signs a coil may need replacing include engine misfire, rough idle, hesitation, or an illuminated check engine light; diagnose the cause before replacing. The listed applications use four coils per engine, so check how many your vehicle needs — this listing is for one coil. Country of origin: Japan.
Interchange: E1247 · U5356 · C888 · UF747 · 22433AA700 · W01332064344 · 5C2101
This part cross-references / interchanges with the following part numbers:
What vehicles does the Beck/Arnley direct ignition coil 178-8559 fit?
It's a direct-fit replacement for the 2017-2018 Subaru Forester (H4-2.0L and H4-2.5L) and the 2015-2021 Subaru WRX (H4-2.0L).
How many coils does my Subaru need?
The listed applications use four coils per engine (one per cylinder). This listing is for a single coil, so confirm how many your vehicle requires before ordering.
What does this ignition coil do?
It steps up battery voltage to the high voltage required to fire the spark plug it sits on, providing the spark for combustion.
Does it include mounting hardware?
No. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.
What are the coil's connector and construction details?
It has a 3-terminal, male-gender connector, with primary and secondary windings made from copper and premium materials chosen to withstand high temperatures.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.