Spark Plug Diagram - Technical Illustration for Automotive Repair & Education #215084 (License: Personal Use)

This technical illustration depicts a modern internal combustion engine spark plug, featuring a central electrode, ground electrode, porcelain insulator, and hexagonal metal shell. The coiled spring-like structure represents the internal resistor or sealing gasket stack, emphasizing durability and heat dissipation. Shading and reflections simulate polished metal and ceramic surfaces under studio lighting.

Used in automotive repair manuals, educational content, OEM parts catalogs, and online tutorials to explain spark plug anatomy, installation, or failure modes; targets mechanics, engineering students, and car enthusiasts seeking visual clarity.