NGK 7421 BMR6A Nickel Spark Plug

NGK standard plugs are constructed for longer life and optimum performance.

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: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 9.5mm (3/8")
Hex Size: 3/4" (19mm)
Terminal Type: Removable Nut
Overall Height: Bantam
Gap: .028" (0.7mm)

Center Electrode

Material: Nickel
Type: Standard
Size: 2.5mm
Projection: Non-Projected

Ground Electrode

Material: Nickel
Type: Standard

Specifications

Resistor: Yes
Resistor Value: 10k Ohm
Heat Range: 6
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

• Mfg Part No: 7421 BMR6A
• Related Part No: 7421 BMR6A