Iridium IX Spark Plug

Upgrade your ignition performance with the NGK Iridium IX Spark Plug (BR8ECMIX / 3520). This plug represents the evolution of spark plug technology from NGK, using an ultra-fine iridium electrode to deliver a strong, consistent spark with reduced voltage demand. The result is reliable combustion and an ignition system that can work more efficiently over time.

Thanks to the iridium center electrode (significantly smaller than platinum and conventional nickel designs), the plug supports stable ignition—especially beneficial when you want dependable starts and clean running. The improved metal shell plating also increases resistance to corrosion, helping the plug stay serviceable in demanding riding and storage conditions.

Key features:

• ✅ Ultra-fine iridium center electrode helps reduce required ignition voltage
• ✅ Extended ignition system life thanks to lower voltage demand
• ✅ Enhanced anti-corrosion shell plating for improved durability

Benefits of use:

• 🔹 More efficient ignition with a fine-wire iridium tip designed for performance
• 🔹 Reliable running through consistent spark characteristics
• 🔹 Long-term value due to durable materials and corrosion resistance

Technical specifications:

• 📌 Brand: NGK Spark Plugs
• 📌 Style: Iridium IX
• 📌 Model: BR8ECMIX
• 📌 Vendor part number: 3520
• 📌 Type: Resistor, 5k Ohms
• 📌 Electrode tip material: Iridium
• 📌 Thread size: 14 mm
• 📌 Thread reach: 19.1 mm (3/4")
• 📌 Hex size: 20.6 mm (13/16")
• 📌 Spark gap: 0.8 mm (0.031")
• 📌 Ground electrode: Single, grooved
• 📌 Terminal: Solid terminal
• 📌 Heat range: 5

Why choose this spark plug?

• ⭐ Proven NGK technology with Iridium IX performance design
• ⭐ Built for durability with improved corrosion-resistant plating
• ⭐ Great service upgrade when you want consistent ignition and efficient spark characteristics