NGK 6431 BU8H Surface Gap Spark Plug

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Regular Price: $4.00 Our Price: $2.49
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NGK 6431 BU8H Surface Gap Spark Plug.

NGK's Surface Gap Plugs are Nearly Immune to Pre-Ignition, and Usually Require a Special High Energy Ignition System. They Can be Susceptible to Fouling, Especially in Colder Applications, but May be Necessary in High Compression Applications.

Fits Mariner and Mercury outboard engines.

Thread Size: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Resistor: No
Reach: 12.7mm (1/2")
Hex Size: 13/16" (21mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .016" (0.4mm)

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

Ground Electrode
Material: Nickel
Type: Surface Discharge

Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Brand: NGK
Heat Range: 8
More Information
Brand NGK Spark Plugs
UPC 087295164310
Vendor Item # 6431
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