Walker 921-2172 Ignition Coil

Walker ThunderSpark Ignition Coil 921-2172

Walker ThunderSpark ignition coil 921-2172 is a direct-fit ignition coil for select Hyundai and Kia applications. It is listed for vehicles including the Hyundai Sonata, Hyundai Santa Fe Sport, Kia Optima, and Kia Sportage, with fitment covering model years from 2011 through 2016.

Key Features

• Ignition coil for select Hyundai and Kia engines
• Walker ThunderSpark product line
• Direct fit for listed applications
• Fits vehicles with N/A position listings as shown in the fitment data
• Part number 921-2172 for accurate ordering and lookup

Fitment Details

• Fits 2013-2016 Hyundai Santa Fe Sport, Single Coil
• Fits 2016 Kia Sportage, Single Coil
• Fits 2011-2015 Kia Optima, ThunderSpark
• Fits 2011-2015 Kia Sportage, ThunderSpark
• Fits 2011-2014 Hyundai Sonata, ThunderSpark

ThunderSpark Product Line

Walker ThunderSpark is the brand line identified for this ignition coil application. For shoppers comparing ignition coil options for Hyundai Sonata, Kia Optima, or Kia Sportage service, the ThunderSpark designation helps narrow the search to the correct Walker part family and the listed fitment range.

What It Is Used For

• Restoring spark delivery when an ignition coil has failed
• Addressing engine misfire conditions tied to weak coil output
• Correcting rough idle caused by ignition coil wear
• Helping resolve hard-start or intermittent-start complaints related to ignition performance
• Replacing a worn coil on listed Hyundai and Kia models

Installation Notes

Verify engine and vehicle fitment against the listed applications before installation. Confirm the connector style, mounting location, and coil type match the original part on the vehicle. Use the part number 921-2172 to confirm the correct ignition coil for your Hyundai Sonata, Kia Optima, Kia Sportage, or Hyundai Santa Fe Sport application.

Quality Assurance

Walker identifies this part under the ThunderSpark line for the specified Hyundai and Kia fitments. Review the vehicle listing carefully to ensure the correct application before service.