Walker
ThunderSpark

Walker 921-2078 Ignition Coil

Brand Walker 921-2078
Product line ThunderSpark
Fits INFINITI and Nissan · 18 vehicles

OE direct replacement. Built for straightforward ignition coil replacement.

ThunderSpark line. Walker performance branding for ignition components.

Ignition coil for reliable spark delivery.

$39.18Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $39.18
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Walker ThunderSpark Ignition Coil 921-2078

Walker ThunderSpark ignition coil 921-2078 is a direct-fit ignition coil for select Infiniti and Nissan applications. It is listed for 2003-2008 Infiniti FX35, 2006-2008 Infiniti M35, 2003-2007 Infiniti G35, and 2003-2006 Nissan 350Z.

Key Features

  • Ignition coil for select V6 applications
  • Walker ThunderSpark product line
  • Direct fit for listed Infiniti and Nissan models
  • Part number 921-2078 for application matching
  • Compatible with 2003-2008 Infiniti FX35, 2006-2008 Infiniti M35, 2003-2007 Infiniti G35, and 2003-2006 Nissan 350Z

Product Details

The Walker ThunderSpark line is positioned for ignition service on import vehicles that require a precise coil replacement. This ignition coil 921-2078 is cataloged for the Infiniti FX35, Infiniti M35, Infiniti G35, and Nissan 350Z across the listed model years, making it a focused replacement choice for ignition system repair on these applications. Use part number 921-2078 to confirm the correct match before ordering.

Common Issues This Part Can Address

  • Engine misfire on a listed Infiniti or Nissan application
  • Rough idle caused by a failing ignition coil
  • Hard starting related to weak spark output
  • Loss of acceleration response from ignition breakdown
  • Check engine light tied to coil-related fault codes

Installation Notes

Verify engine application and connector match before installation. Inspect spark plugs, coil boots, and related ignition components during service, since worn parts can contribute to repeat coil failure. Confirm fitment by vehicle year, make, and model for the exact application listed for 921-2078.

Quality Assurance

Walker ThunderSpark parts are cataloged for specific vehicle applications and built for direct replacement use on the listed Infiniti and Nissan models. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2008INFINITIFX353.5LV6N/AThunderSpark
2008INFINITIM353.5LV6N/AThunderSpark
2007INFINITIFX353.5LV6N/AThunderSpark
2007INFINITIG353.5LV6N/AThunderSpark
2007INFINITIM353.5LV6N/AThunderSpark
2006INFINITIFX353.5LV6N/AThunderSpark
2006INFINITIG353.5LV6N/AThunderSpark
2006INFINITIM353.5LV6N/AThunderSpark
2006Nissan350Z3.5LV6N/AThunderSpark
2005INFINITIFX353.5LV6N/AThunderSpark
2005INFINITIG353.5LV6N/AThunderSpark
2005Nissan350Z3.5LV6N/AThunderSpark
2004INFINITIFX353.5LV6N/AThunderSpark
2004INFINITIG353.5LV6N/AThunderSpark
2004Nissan350Z3.5LV6N/AThunderSpark
2003INFINITIFX353.5LV6N/AThunderSpark
2003INFINITIG353.5LV6N/AThunderSpark
2003Nissan350Z3.5LV6N/AThunderSpark