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The Denso 5385 Iridium Power Spark Plug (IUF27A) is engineered for high-performance engines requiring a compact design and colder heat range. With a fine-wire iridium center electrode and projected tip configuration, it delivers faster starts, stable combustion, and excellent resistance to fouling in high-revving motorcycles and powersport machines.
🔧 Projected iridium tip enhances ignition in compact engines
🔧 Cold heat range supports aggressive tuning setups
🔧 Compact 10mm thread ideal for motorcycles and ATVs
🔧 Pre-gapped and ready for installation
Brand & Part Number: Denso 5385 (IUF27A)
Material: Iridium
Thread Size: 10mm
Reach: 12.7mm (0.5 in)
Hex Size: 14mm
Heat Range: 27
Seat Type: Gasket
Resistor: Yes
Gap: 0.6mm (0.024 in)
Equip your engine with the Denso IUF27A Iridium Power plug for precision ignition and reliable performance—order now!