Walker 921-2157 Ignition Coil

Walker ThunderSpark Ignition Coil 921-2157

Walker ThunderSpark ignition coil 921-2157 is a direct-fit ignition coil for select Kia and Hyundai applications. It is listed for vehicles including the Kia Optima, Kia Rondo, Kia Magentis, and Hyundai Santa Fe across the model years shown below.

Key Features

• Walker ThunderSpark ignition coil for OE-style ignition system service
• Part number 921-2157 for accurate catalog matching
• Compatible with select Kia Optima, Kia Rondo, Kia Magentis, and Hyundai Santa Fe applications
• Fitment includes ThunderSpark and Single Coil configurations where noted
• Built for ignition coil replacement on listed 2006-2012 vehicles

Fitment Details

• Fits 2011-2012 Kia Rondo, Single Coil.
• Fits 2008-2010 Kia Magentis, Single Coil.
• Fits 2008-2010 Kia Optima, ThunderSpark.
• Fits 2007-2010 Kia Rondo, ThunderSpark.
• Fits 2008-2009 Hyundai Santa Fe, ThunderSpark.
• Fits 2007 Hyundai Santa Fe, From 10/30/2006; ThunderSpark.
• Fits 2007 Kia Optima, From 09/11/2006; ThunderSpark.
• Fits 2006 Kia Optima, From 9/16/2006; ThunderSpark.

What It Is Used For

• Replacing a failed ignition coil on a listed Kia Optima, Kia Rondo, Kia Magentis, or Hyundai Santa Fe
• Restoring spark delivery when the engine has misfire symptoms
• Addressing rough idle caused by weak or inconsistent coil output
• Correcting hard-start or no-start conditions tied to ignition coil failure
• Resolving check engine light concerns related to ignition performance

Installation Notes and Tips

Verify the vehicle year, make, model, and notes before ordering, since this part number is tied to specific ThunderSpark and Single Coil applications. Match the existing coil style and confirm the production-date notes for 2006-2007 Kia Optima and Hyundai Santa Fe applications. Part number 921-2157 should be checked against the original unit before installation.

Quality Assurance

Walker ThunderSpark is the product line identified for this ignition coil, and 921-2157 is cataloged for the listed applications to support accurate replacement selection.