2003–2007 Infiniti G35
Save $335 by doing it yourself! Shop cost: $450
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| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Correct spark plug set for the gasoline/ICE engine in 2003-2008 Infiniti G35; verify engine, heat range, gap, and VIN fitment | — | $115.00 | |
| Coil-boot seals or ignition coils only if inspection finds damage | — | $35.00 |
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Follow these steps carefully
Verify the exact engine, plug part number, heat range, reach, and gap for the 2003-2008 Infiniti G35. Scan for misfire codes and inspect coils and plug wells before ordering parts.
Let the 2003-2008 Infiniti G35 cool completely, disconnect the negative battery cable only if the service procedure calls for it, and remove the engine cover, coils, or intake parts needed for access.
Label connectors as needed, release each coil without pulling its wiring, and blow or brush debris away from the plug wells on the 2003-2008 Infiniti G35 before loosening a plug.
Remove each old plug with a spark-plug socket, compare reach and deposits, start each new plug by hand, and use the exact engine-specific torque. Never use an impact for final seating.
Apply only the specified dielectric grease to the boot, reinstall coils and connectors, start the 2003-2008 Infiniti G35, and scan for returning misfire codes. Stop if a thread, coil, connector, or misfire problem remains.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
