ThunderSpark Ignition Coil P/N:921-92178

Deliver a strong, consistent spark to keep combustion firing cleanly with the ThunderSpark Ignition Coil 921-92178. It installs as a direct-fit replacement for the 2006-2007 Mazda 5, transforming the vehicle's low battery voltage into the high-voltage output needed to fire the spark plug.

• Core job: steps up battery voltage to the high voltage that jumps the spark plug gap and ignites the air-fuel mixture in the cylinder.
• Direct-fit replacement: engineered to replace a worn or failed original ignition coil on the listed Mazda 5 applications.
• Restores spark: if a failing coil is the cause of a misfire, this part replaces it to return normal ignition output.

Signs an ignition coil may need replacing include engine misfire, rough idle, hesitation, hard starting, or an illuminated check engine light. Because those symptoms can have other causes, diagnose the fault before replacing. This listing covers the 2006-2007 Mazda 5.

Interchange: Manufacturer part number 921-92178 (also 92192178).