HomeIgnition > Ignition CoilWalker 921-2237 Ignition Coil
Part #: 921-2237

Walker 921-2237 Ignition Coil

Single Coil
⚙️ 25 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Single Coil
🚗Fitment: Subaru, Legacy, Outback, and Tribeca
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Reliable Ignition Coil for Subaru Legacy, Outback, and Tribeca

The Walker ThunderSpark Ignition Coil 921-2237 is designed to deliver consistent ignition performance for select Subaru models. Engineered to meet the specific ignition requirements of the Legacy, Outback, and Tribeca, this ignition coil ensures proper spark delivery for efficient engine operation.

  • Compatible with Subaru Legacy, Outback, and Tribeca models
  • Walker ThunderSpark brand line for dependable ignition components
  • Part number 921-2237 for precise fitment and replacement
  • Designed to maintain optimal spark energy and engine performance
  • Direct replacement ignition coil for improved reliability

About the Walker ThunderSpark Ignition Coil Line

The ThunderSpark product line by Walker focuses on ignition components engineered to meet or exceed OEM specifications. This line emphasizes durability and consistent spark delivery, which is critical for maintaining engine efficiency and reducing misfires. The 921-2237 ignition coil is part of this line, providing a reliable ignition solution tailored for Subaru vehicles.

Product Details and Compatibility

This ignition coil is specifically designed for use in Subaru Legacy, Outback, and Tribeca models, ensuring compatibility and proper fitment. The part number 921-2237 corresponds to this exact coil, making it easier to identify and replace the original component. By delivering the correct voltage to the spark plugs, it supports smooth engine starts and steady performance under various driving conditions.

Common Issues Addressed by This Ignition Coil

  • Engine misfires or rough idling in Subaru Legacy, Outback, or Tribeca
  • Difficulty starting the engine or intermittent stalling
  • Reduced fuel efficiency due to incomplete combustion
  • Check engine light triggered by ignition system faults
  • Loss of power or hesitation during acceleration

Installation Notes and Tips

When replacing the ignition coil 921-2237 on Subaru Legacy, Outback, or Tribeca models, ensure the engine is cool before beginning installation. Disconnect the battery to prevent electrical shorts. Carefully remove the old coil and inspect the spark plug boots and wiring harness for damage. Install the new Walker ThunderSpark ignition coil securely, making sure all electrical connections are tight to maintain proper function.

Quality Assurance and Warranty

Walker manufactures the ThunderSpark ignition coil 921-2237 to meet stringent quality standards. While specific warranty details are not provided here, Walker products typically undergo rigorous testing to ensure durability and performance. For warranty information, refer to the product packaging or contact the manufacturer directly.

This part fits 25 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2019SubaruLegacy3.6LH6N/ASingle Coil
2019SubaruOutback3.6LH6N/ASingle Coil
2018SubaruLegacy3.6LH6N/ASingle Coil
2018SubaruOutback3.6LH6N/ASingle Coil
2017SubaruLegacy3.6LH6N/ASingle Coil
2017SubaruOutback3.6LH6N/ASingle Coil
2016SubaruLegacy3.6LH6N/ASingle Coil
2016SubaruOutback3.6LH6N/ASingle Coil
2015SubaruLegacy3.6LH6N/AThunderSpark
2015SubaruOutback3.6LH6N/AThunderSpark
2014SubaruLegacy3.6LH6N/AThunderSpark
2014SubaruOutback3.6LH6N/AThunderSpark
2014SubaruTribeca3.6LH6N/AThunderSpark
2013SubaruLegacy3.6LH6N/AThunderSpark
2013SubaruOutback3.6LH6N/AThunderSpark
2013SubaruTribeca3.6LH6N/AThunderSpark
2012SubaruLegacy3.6LH6N/AThunderSpark
2012SubaruOutback3.6LH6N/AThunderSpark
2012SubaruTribeca3.6LH6N/AThunderSpark
2011SubaruLegacy3.6LH6N/AThunderSpark
2011SubaruOutback3.6LH6N/AThunderSpark
2011SubaruTribeca3.6LH6N/AThunderSpark
2010SubaruLegacy3.6LH6N/AThunderSpark
2010SubaruOutback3.6LH6N/AThunderSpark
2010SubaruTribeca3.6LH6N/AThunderSpark

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.