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Spark Plug Adaptor for Gravely 5-hp & 6.6-hp L-series tractors.

  • Adapts old-style 7/8-18" thread to modern 14mm thread.
  • Allows you to use a modern, less expensive plug (available from us) and also use a modern compression checker on your 5 & 6.6-hp engine.


#SPA-1 - Spark Plug Adaptor

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