BG’s heavy wall PTFE insulated extensions prevent ignition problems. . .

  • Eliminate failures due to heat fracture of silicone ignition cable.
  • Unique “slide into place” boot prolongs spark plug life by keeping plug insulators free of dirt and moisture.
  • Highly conductive inner brass rod provides long lasting, vibration resistant, mating threads.
  • Designed for use with all makes of spark plugs.
  • Use with DS™ Series Connectors or Part No. 21420 to eliminate flashover for a safer and more efficient operation.
  • Call factory if support is required.

Models available for screw-on or snap-on type connection…

ModelConnection TypeWith “Slide
Into Place”

Specify length in inches after dash —
Example: 21229—6 is 6” long. For MEP engines specify 21209—
MEP. If intended for use with Champion W10, W14, or W18 spark
plug, add suffix “W”. (Example: 21209—4W)

If intended for use with Champion WPCC types, (2” long insulator)
add suffix L. (Example: 21209-8L)

Flash-Fighter Extension with Resistors:

There is a new line of screw-on, no boot style (like P/N 21229-) extensions with resistors. The P/N is 25419-XX, where XX stands for the length.

The extension comes in the following lengths:
4”, 6”, 8”, 10”, 12”, 14”, 15”, 16”, 18” 20”, 22”, and 24”.

The resistance value is between 8,000 and 12,000 Ohms. (For 6,000 Ohms nominal value, call factory)

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