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Denso's patented U-Groove spark plug enables complete 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 flash front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures.
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from Albuquerque, NM
Comments about Denso Hot U Standard Spark Plug:
I ordered X24EPU9 for Honda CB350, but it's too small, 12mm. I will now order W24EPU, 14mm. Check yours before ordering. I lucked out, I'm building a bike that uses the X... plug
Bottom Line Yes, I would recommend this to a friend
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