Denso Junior dragster spark plugs

W16FS-U ideal for Go Kart racing or Drag racing-Junior dragster same as NGK B5HS

• Threaddiameter: 14mm
• Threadreach: 12.7mm
• Seattype: flat
• Hexsize: 21mm
• Tipconfiguration: non projected
• Construction: Standard construction
• Terminaltype: Removable

A key feature of DENSO spark plugs is the patented U-groove ground electrode. This enables complete fuel combustion by allowing the spark to fill the gap created by the 'U' shape. The ball of fire created in the U-groove develops a larger and hotter flame front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures. The complete combustion from DENSOs U-groove design leads to greater fuel efficiency.