OEM-spec Ignition Coil for Popular Models – Direct replacement ignition coil for Ardisam part #13400 — compatible with Earthquake/Viper 40 cc 4-cycle engines, including the MC440 Cultivator series. Guaranteed Fit & Easy Installation – Designed to drop-in on MC440 and other supported 40 cc engines without modification, restoring proper spark and engine function quickly. Reliable Performance — Strong Consistent Spark – Provides high-output spark to ensure smooth starting, steady idle, and dependable power during heavy tilling or gardening work. Built for Durability in Tough Conditions – Heavy-duty coil construction resists heat, vibration, and repeated use — ideal for outdoor equipment working hard in soil, dirt, and variable weather. Restore Engine Efficiency & Dependability – If your cultivator was struggling to start, misfiring, or losing power, replacement of the worn coil with this OEM-grade part can quickly revive performance and extend engine life. The 13400 Ardisam Ignition Coil is an OEM-grade replacement part engineered to fit 40 cc 4-cycle engines — most notably those in the Earthquake/Viper/Ardisam MC440 Cultivator lineup — without the need for adapters or modifications. When your cultivator begins to falter, jerk, or fail to start properly, the ignition coil is often the first component to check. This coil restores a consistent, high-energy spark for reliable, smooth ignition, ensuring your engine fires cleanly and runs as intended. Constructed to meet strict OEM specifications, the 13400 ignition coil uses robust materials capable of withstanding the demanding environment of garden and soil work. Whether you’re breaking ground for the season or deep-tilling tough terrain, this coil delivers the ignition strength required to get the job done — and done season after season. Installing this replacement part breathes new life into your equipment without the high cost of dealer parts, making it the smart, dependable choice for maintaining performance and longevity.