NGK 6421 BM7F Nickel Spark Plug

• 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 Diameter14mm
• Thread Pitch1.25mm
• Seat TypeTapered
• Reach9.5mm (3/8")
• Hex Size5/8" (16mm)
• Terminal TypeRemovable Nut
• Overall HeightBantam
• Gap.028" (0.7mm)

• Center Electrode
• MaterialNickel
• TypeStandard
• Size2.5mm
• ProjectionNon-Projected

• Ground Electrode
• MaterialNickel
• TypeStandard
• Quantity1

• Specifications
• ResistorNo
• Resistor Value1K Ohm
• Heat Range7
• Torque SpecsCast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.

• Part Information
• BrandNGK/NTK
• Warranty60 Days
• Longevity30k Miles

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