Stop chasing misfires—fix the real problem.

The ignition coil pigtails on the NC chassis Miata (2006–2015) are a well-known failure point in the factory engine harness. Over time, heat, vibration, and age cause the wiring and connectors to degrade—leading to intermittent or persistent misfires.

At Fab9, we see this constantly—especially during 2.5L swap builds. In many cases, customers replace coils unnecessarily when the real issue is the connector itself.

If you're experiencing a misfire, rough idle, or inconsistent spark, this should be one of the first things you check.

Common Symptoms of a Failing Coil Pigtail:

• Intermittent misfire
• Misfire under load
• Random cylinder misfire codes
• Rough idle or hesitation
• No change after replacing ignition coils

✅ Features:

• Direct replacement ignition coil connector
• High-quality wiring with durable insulation
• Pre-terminated leads for easy installation
• Ideal for repairs or engine swaps (2.5L Duratec)
• Restores proper ignition signal and reliability

Vehicle Fitment:

• 2006–2015 Mazda MX-5 Miata (NC1, NC2, NC3)
• 2.0L MZR
• 2.5L Duratec swaps

Installation Notes:

• Requires cutting and splicing into factory harness
• Recommended to solder and heat shrink connections
• Match wire colors and verify pin orientation before install

Pro Tip: If one pigtail has failed, the others are likely not far behind. Replacing all four at once can save time and future troubleshooting.

Don't throw parts at a misfire—fix it at the source.