Walker 921-2158 Ignition Coil
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Walker
 ThunderSpark

Walker 921-2158 Ignition Coil

Brand Walker 921-2158
Product line ThunderSpark
Fits Hyundai and Kia · 4 vehicles

OE direct replacement. Matches the original ignition coil form for straightforward service.

ThunderSpark line. Walker performance ignition components for dependable spark delivery.

Ignition coil for restoring consistent spark and engine performance.

$42.54Free shipping
In stock · usually ships same day before 1pm CST
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Ignition Coil for Select Hyundai and Kia Models

Walker ThunderSpark 921-2158 is an ignition coil for select 2006-2007 Hyundai and Kia applications. It supports direct replacement needs for vehicles with ignition performance concerns and is listed for specific Santa Fe, Magentis, and Optima fitments.

Key Features

  • Ignition coil for select Hyundai Santa Fe and Kia applications
  • Walker ThunderSpark product line
  • Direct fitment by vehicle year, make, and model
  • Part number 921-2158 for accurate ordering and lookup
  • Fits 2007 Hyundai Santa Fe, N/A, to 10/30/2006; ThunderSpark
  • Fits 2007 Kia Magentis, N/A, Single Coil
  • Fits 2007 Kia Optima, N/A, to 09/11/2006; ThunderSpark
  • Fits 2006 Kia Optima, N/A, to 9/18/2006; ThunderSpark

Detailed Description

Walker ThunderSpark 921-2158 is an ignition coil built for specific Hyundai and Kia engine management applications. The ThunderSpark line identifies Walker ignition components for targeted replacement use, and this part number is cataloged for 2007 Hyundai Santa Fe, 2007 Kia Magentis, 2007 Kia Optima, and 2006 Kia Optima vehicles with the listed production-date notes. Use 921-2158 when you need a precise ignition coil match for these vehicle-specific applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues Addressed

  • Engine misfire related to weak ignition output
  • Hard starting caused by ignition coil failure
  • Rough idle from inconsistent spark delivery
  • Loss of power under load tied to ignition breakdown
  • Check engine light conditions associated with coil faults

Installation Notes and Tips

Verify the production date and engine application before ordering, since fitment is limited by build date on some Hyundai Santa Fe and Kia Optima models. Confirm the connector style and mounting location against the original coil before installation. Clear diagnostic trouble codes after replacement and recheck engine performance.

Quality Assurance

Walker ThunderSpark ignition components are cataloged for application-specific replacement use and are identified by part number 921-2158 for accurate fitment matching.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2007HyundaiSanta Fe2.7LV6N/ATo 10/30/2006; ThunderSpark
2007KiaMagentis2.7LV6N/ASingle Coil
2007KiaOptima2.7LV6N/ATo 09/11/2006; ThunderSpark
2006KiaOptima2.7LV6N/ATo 9/18/2006; ThunderSpark