4 Pack Denso 5391 Iridium Power Spark Plugs IWM24 ps

The Denso 5391 Iridium Power Spark Plug (IWM24) is engineered for small-displacement, high-RPM engines that require precise ignition and superior durability. Featuring a compact M10 thread and ultra-fine iridium electrode, it delivers stable combustion, fast starts, and excellent anti-fouling performance—ideal for motorcycles, karting, and performance engines with tight space requirements.

Features & Benefits:

🔧 Fine-wire iridium tip improves ignitability and durability
🔧 Cold heat range supports high-performance engine tuning
🔧 Compact design fits small, high-RPM engine layouts
🔧 Pre-gapped for quick and accurate installation

Specifications:

Brand & Part Number: Denso 5391 (IWM24)
Material: Iridium
Thread Size: 10mm
Reach: 19mm (0.75 in)
Hex Size: 14mm
Heat Range: 24
Seat Type: Gasket
Resistor: Yes
Gap: 0.6mm (0.024 in)

Optimize ignition in tight-engine applications with the Denso IWM24 Iridium Power plug—engineered for peak performance and reliability!