NGK 3521 Spark Plug Iridium IX CR9EIX

3521 CR9EIX NGK Spark Plug

NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines.
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

Shell

Thread Diameter: 10mm
Thread Pitch: 1.0mm
Seat Type: Gasket
Reach: 19mm (3/4")
Hex Size: 5/8" (16mm)
Terminal Type: Removable Nut
Overall Height: ISO
Gap: .031" (0.8mm)

Center Electrode

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

Ground Electrode

Material: Nickel
Type: Standard
Shape: Taper Cut
Quantity: 1

Specifications

Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 9
Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft.

• Mfg Part No: 3521 CR9EIX
• Related Part No: 3521 CR9EIX