Denso Iridium Spark Plug (Hot Plug) Fits: > 99-17 Twin Cam   86-21 XL Sportster   94-07 Buell models

Denso Iridium Spark Plug (Hot Plug) IXU22 Fits: > 99-17 Twin Cam,  86-21 XL Sportster,  94-07 Buell models

• Six times harder than platinum, iridium withstands temperatures up to 4,000°F
• Because the iridium electrodes of these plugs can be shrunk to only 0.4mm, voltage requirements decrease while firing performance improves
• 360° laser welding of electrode provides a seal that resists wear even in the worst conditions
• Ground electrode features a tapered cut and U-groove that form a large volume area for the flame's center

A ‘hot’ plug has more insulation and so retains more heat at its tip, whereas a ‘cold’ plug has less insulation and so the tip remains at a lower temperature.

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Part Number:
Hot Plug

• IXU22: For 99-17 Twin Cam
• IXU22: For 86-21 XL
• IXU22: For 94-07 Buell models