With close to a century at the forefront of spark plug engineering, serving as the original equipment manufacturer for many of the world's leading vehicle brands and a track record of high-performance development in association with international motorsports, teams and aftermarket part suppliers, NGK are a truly world-class manufacturer with a firm commitment to advancing the state-of-the-art in automotive, marine, motorcycle and powersports spark plugs.

CR8EIX

Aimed squarely at the performance enthusiast, the NGK 4218 CR8EIX Iridium IX spark plug utilises superior design and technology to deliver improved ignition, faster throttle response, better fuel economy and a longer service life. The trivalent properties of its iridium tip allow the CR8EIX to deliver a more consistent spark between even longer service intervals of up to 60,000km. Iridium also has a melting point close to 1000-degrees Celsius higher than the nickel utilized in conventional alternatives and provides excellent anti-corrosion and anti-seizing properties. These plugs also feature a solid copper core conductor for improved heat transfer, a pure alumina silicate ceramic insulator for increased durability, corrugated ribs to prevent flashover and triple seals to eliminate leakage. The NGK 4218 CR8EIX Iridium IX spark plug is the ideal choice for modern high-efficiency and high-performance engines, ensuring an optimal spark in even the most demanding applications.

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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)

Centre 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: 8

Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminium: 7.2-8.7 lb. ft.

Part Information

Brand: NGK/NTK

Warranty: 60 Days

Longevity: 80000km