Igniter CDI Box Ignition Coil Spark Plug Kit For Honda TRX400EX Sportrax 1999 Through 2004 2x4 ATV Replacement Parts Compatible With OEM 30500HN1003 30700KCZ000 30410HN1003

TRX400EX CDI Ignition Kit: Spark Plug & Coil
✔️ Kit includes CDI Box, Spark Plug, Ignition Coil; OEM 30500-HN1-003

This ignition kit bundles a CDI box, spark plug, and ignition coil designed as a direct OEM replacement for the Honda TRX400EX Sportrax 2x4 from 1999 through 2004. It's a handy fix for starting issues, misfires, or weak spark, delivering reliable ignition timing and steady engine performance.

✅ Compatible with Honda TRX400EX Sportrax 2x4 1999-2004 models
✅ Includes CDI Box, Spark Plug, Ignition Coil for a complete replacement
✅ OEM part numbers: 30500-HN1-003, 30700-KCZ-000, 30410-HN1-003
✅ Easy to install and fits without modification, restoring factory performance

💡 What is a CDI box ignition kit and why should you replace it on a Honda TRX400EX Sportrax 1999-2004?

Here's a quick guide to why this kit matters.

• Restores proper timing signals with a matched CDI box, ignition coil, and plug
• Improves starting reliability and idle quality on older ATV engines
• OEM-style parts ensure compatibility and easier maintenance