Walker 921-2122 Ignition Coil

Walker ThunderSpark Ignition Coil 921-2122

Walker ThunderSpark 921-2122 is an ignition coil for a wide range of Toyota, Lexus, and Scion applications. It is built for direct replacement use on vehicles such as the Toyota 4Runner, Toyota Tundra, Lexus GX460, and Lexus LS460 where the fitment calls for a single coil.

Key Features

• Ignition coil replacement for gasoline engine ignition systems
• Walker ThunderSpark product line for select Toyota, Lexus, and Scion applications
• Direct-fit coverage across multiple model years and engine platforms
• Fits vehicles listed with single-coil application notes
• Part number 921-2122 for catalog and fitment lookup

Fitment Coverage

• Fits 2017-2024 Toyota 4Runner, N/A, Single Coil
• Fits 2017-2023 Lexus GX460, N/A, Single Coil
• Fits 2017-2022 Toyota Sequoia, N/A, Single Coil
• Fits 2017-2021 Lexus LX570, N/A, Single Coil
• Fits 2017-2021 Lexus NX300h, N/A, Single Coil
• Fits 2017-2021 Toyota Land Cruiser, N/A, Single Coil
• Fits 2017-2021 Toyota Tundra, N/A, Single Coil
• Fits 2019 Toyota Corolla, N/A, Single Coil
• Fits 2017-2019 Toyota Highlander, N/A, Single Coil
• Fits 2009 Toyota Highlander, N/A, Single Coil
• Fits 2019 Toyota RAV4, N/A, Mfg in North America; Single Coil
• Fits 2017-2018 Lexus ES300h, N/A, Single Coil
• Fits 2017-2018 Toyota Avalon, N/A, Single Coil
• Fits 2013 Toyota Avalon, N/A, Single Coil
• Fits 2017-2018 Toyota RAV4, N/A, Single Coil
• Fits 2011-2012 Toyota RAV4, N/A, Single Coil
• Fits 2009 Toyota RAV4, N/A, Single Coil
• Fits 2017 Lexus LS460, N/A, Single Coil
• Fits 2017 Toyota Camry, N/A, Single Coil
• Fits 2013-2016 Lexus ES300h, N/A, ThunderSpark
• Fits 2016 Lexus GS450h, N/A, Fits vehicles up to October 2015; ThunderSpark
• Fits 2010-2016 Lexus GX460, N/A, ThunderSpark
• Fits 2016 Lexus IS300, N/A, To 10/2015, w/o White Mark; Single Coil
• Fits 2016 Lexus IS350, N/A, Fits vehicles up to October 2015; ThunderSpark
• Fits 2007-2016 Lexus LS460, N/A, ThunderSpark
• Fits 2008-2016 Lexus LS600h, N/A, ThunderSpark
• Fits 2013-2016 Lexus LX570, N/A, ThunderSpark
• Fits 2008-2011 Lexus LX570, N/A, ThunderSpark
• Fits 2015-2016 Lexus NX300h, N/A, ThunderSpark
• Fits 2016 Lexus RC300, N/A, Fits vehicles up to October 2015; ThunderSpark
• Fits 2016 Lexus RC350, N/A, Fits vehicles up to October 2015; ThunderSpark
• Fits 2013-2016 Scion tC, N/A, ThunderSpark
• Fits 2010-2016 Toyota 4Runner, N/A, ThunderSpark
• Fits 2014-2016 Toyota Avalon, N/A, ThunderSpark
• Fits 2010-2016 Toyota Camry, N/A, ThunderSpark
• Fits 2010-2016 Toyota Highlander, N/A, ThunderSpark
• Fits 2013-2016 Toyota Land Cruiser, N/A, ThunderSpark
• Fits 2008-2011 Toyota Land Cruiser, N/A, ThunderSpark
• Fits 2013-2016 Toyota RAV4, N/A, ThunderSpark
• Fits 2010 Toyota RAV4, N/A, ThunderSpark
• Fits 2008-2016 Toyota Sequoia, N/A, ThunderSpark
• Fits 2007-2016 Toyota Tundra, N/A, ThunderSpark
• Fits 2016 Toyota Venza, N/A, Single Coil
• Fits 2009 Toyota Venza, N/A, Single Coil
• Fits 2013-2015 Lexus GS350, N/A, ThunderSpark
• Fits 2007-2011 Lexus GS350, N/A, ThunderSpark
• Fits 2013-2015 Lexus GS450h, N/A, ThunderSpark
• Fits 2007-2011 Lexus GS450h, N/A, ThunderSpark
• Fits 2006-2015 Lexus IS250, N/A, ThunderSpark
• Fits 2006-2015 Lexus IS350, N/A, ThunderSpark
• Fits 2015 Lexus RC350, N/A, Single Coil
• Fits 2012-2015 Scion iQ, N/A, ThunderSpark
• Fits 2010-2015 Toyota Venza, N/A, ThunderSpark
• Fits 2013-2014 Toyota FJ Cruiser, N/A, ThunderSpark
• Fits 2010-2011 Toyota FJ Cruiser, N/A, ThunderSpark
• Fits 2013 Toyota Sienna, N/A, Single Coil
• Fits 2011-2012 Scion tC, N/A, Single Coil
• Fits 2012 Toyota FJ Cruiser, N/A, Single Coil
• Fits 2011-2012 Toyota Sienna, N/A, ThunderSpark
• Fits 2011 Toyota Tundra, N/A, From 10/2010; ThunderSpark
• Fits 2006 Lexus GS300, N/A, ThunderSpark

What It Is Used For

• Replacing a failed ignition coil that can cause misfires
• Restoring spark delivery on Toyota 4Runner, Toyota Tundra, and Toyota Camry applications
• Addressing rough idle, hesitation, or hard-start conditions tied to coil failure
• Correcting check engine light concerns related to ignition performance
• Maintaining proper ignition output on Lexus GX460, Lexus LS460, and related models

Installation Notes and Tips

Verify the year, make, model, and fitment note before ordering, especially for listings with ThunderSpark, Single Coil, or production-date restrictions. Confirm the connector style and engine application against the original coil before installation. Part number 921-2122 is also a useful reference when matching the replacement to the original unit.

Quality Assurance

Walker ThunderSpark 921-2122 is cataloged for direct replacement use across the listed Toyota, Lexus, and Scion applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.