NGK spark plug R7437-9 Racing 4654

NGK spark plug R7437-9 Racing 4654

Technical specifications

• NGK part number: 4654
• Series: Racing
• Type: R7437-9
• Thread: M14 x 1.25 mm
• Thread length: 26.5 mm
• Seat type: flat (with gasket)
• Wrench size: 16 mm (5/8")
• Center electrode: iridium
• Ground electrode: nickel, oblique
• Spark gap: 0.7 mm (0.028")
• Resistance: 5 kΩ
• Thermal range: 9
• Tip type: solid
• Insulator: aluminum oxide
• Sealing: triple
• Tightening torque
  • Cast iron head: 24.4-34.3 Nm
  • Alu headminiowa: 24.4-29.3 Nm