NGK Standard Spark Plug 5626 - BUHW-2

Item # : 230777

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  • Manufacturer: NGK



NGK 5626 BUHW-2 Surface Gap Plug

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.

  • 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


  • Solid Terminal
  • Tungsten Center Electrode
  • Surface Discharge
  • Corrugated Ribs
  • Copper Core


  • 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:. 071" (1.8mm)

Center Electrode

  • Material: Tungsten
  • 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: 12
  • Longevity: 30k

Note: Image for reference only, actual product may vary.

Manufacturer Part Number: BUHW-2
Manufacturer Stock Number: 5626