Home / Ignition and Tune Up / U-Groove Spark Plug: OE Performance, lasts 30K+ Miles, K20R-U11
  • U-Groove Spark Plug:  OE Performance, lasts 30K+ Miles, K20R-U11
  • U-Groove Spark Plug:  OE Performance, lasts 30K+ Miles, K20R-U11

U-Groove Spark Plug: OE Performance, lasts 30K+ Miles, K20R-U11

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  • Detail
    U-Groove design provides better ignitability for increased engine efficiency.

    Product Features:
    • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
    • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
    • Wide range of part numbers for thousands of applications, including classic and collector cars
    • Lasts twice as long as most conventional plugs
    • 100% pre-fired to assure reliable operation
    • U-Groove Conventional
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