NGK Spark Plug IMR9D-9H (6544) Single

NGK have over 80 years of experience in spark plug manufacturing and are the world leader in spark plug technology. NGK has an extensive range of spark plugs, each with their own unique characteristics specifically engineered to its application and designed to suit a broad range of motorcycles, ATVs & UTVs inAustralasia. With NGK’s dedication to quality, outstanding reliability and state of the art manufacturing techniques, you can rely on your NGK Spark Plugs.

Dont just ask for a spark plug, insist on NGK.

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 worlds hardest metals, the precious metal iridium starts melting at a temperature of 2450C 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: 19mm (3/4″)
• Hex Size: 16mm (5/8″)
• Terminal Type:Solid
• Overall Height: ISO
• Gap: 0.9mm (0.035″)

Centre Electrode

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

Ground Electrode

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

Specifications

• Heat Range: 9
• Resistor: Yes

NGK single iridium plugs are designed specifically for performance enthusiasts. The fine wire centre electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, making it perfect for todays high-tech, high-performance engines.

Features:

• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
• Corrugated ribs prevent flashover.
• Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
• Copper core aids in heat removal.
• Triple seals prevent leakage.

Specifications:

• Th read Diameter: 10mm
• Thread Pitch: 1.0mm
• Seat Type: Gasket
• Reach: 19mm (3/4″)
• Hex Size: 5/8″ (16mm)
• Terminal Type: Solid
• Overall Height: ISO
• Gap: 0.035″ (0.9mm)

Center Electrode

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

Ground Electrode

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

Additional Details

• Quantity: 1
• Resistor: Yes
• Resistor Value: 5k Ohm
• Heat Range: 9
• Threaded Reach: 12.7mm

Torque Specifications

• Cast Iron: 7.210.8 lb. ft.
• Aluminium: 7.28.7 lb. ft.