SILMAR9A9S Iridium Spark Plug

NGK iridium spark plugs currently represent the highest-quality technological solution. They feature an iridium-alloy on the middle electrode welded on in a special process using a laser. One of the world's hardest metals, the precious metal iridium starts melting at a temperature of 2450°C and is therefore very resistant to spark erosion. By using it, the service life is doubled on average in comparison to standard nickel spark plugs.

Shell

• Thread Size: 10mm
• Thread Pitch: 1.0mm
• Seat Type: Gasket
• Resistor Value: 5K Ohm
• Reach: 26.5mm (1.04")
• Hex Size: 14mm (9/16")
• Terminal Type: Solid
• Overall Height: ISO
• Gap: 0.9mm (0.035")

Centre Electrode

• Material: Iridium
• Type: Fine Wire
• Size: 0.6mm
• Projection: Projected

Ground Electrode

• Material: Platinum
• Type: Standard
• Shape: Taper Cut
• Quantity: 1

Specifications

• Heat Range: 9
• Resistor: Yes