Spark Plug - Denso IW31 Iridium
Genuine part.
Denso IW31 iridium spark plug. Iridium electrodes hold a sharp edge far longer than standard plugs, giving a consistent spark and reliable running across a race weekend, and the IW31 sits at the colder end of Denso's iridium range.
Plug heat range should match your engine and conditions, so if you are unsure whether the IW31 is right for your setup, ask us before you buy. Reading the plug after a session remains one of the best free tuning tools in karting.
Available from Velocity Kart Shop, Eastern Creek Sydney, with Australia-wide shipping.
Details
Fitment questions? Call 0488 465 278 — we race this gear every weekend.
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