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Spark Plugs and Spark Plug Wires for M8

36K views 28 replies 11 participants last post by  scrapyard  
At 19,300 miles I had HD pull the plugs while install the trike front end . Tank was off anyway. The plugs were like new . Installed new ones anyway. One plug wire was rubbing and had a worn spot. Dealer had one laying around swapped it . At 30,000 now all good still.
 
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