DENSO Iridium Spark Plug IW31

DENSO Iridium Spark Plug IW31 (anti-interference), with a thread diameter of 14 mm (long thread). Features the world’s thinnest center electrode, measuring just 0.4 mm in diameter. The U-shaped notched ground electrode concentrates the spark, resulting in a stronger spark while requiring less current. Additional benefits include easier starting, better acceleration, and lower fuel consumption. The extremely high melting point of iridium (2500°C) ensures a long service life. The built-in 5 kΩ monolithic resistor provides spark suppression. The DENSO IW 31 spark plug is designed for use at temperatures ranging from 25°C to 35°C. It is suitable for many 2-stroke kart engines (e.g., Rotax MAX) and motorcycles. Type: IW31 (Iridium) Thread: M14 x 1.25 Thread length: 19 mm Hex: 22 mm spanner size Electrode gap: 0.7 mm Temperature range IW31: 25°C to 35°C Comparable to the following spark plugs: DENSO: W31ES-U; W31ESR-U; W31ES-ZU NGK: BPR10ES; BR10EIX