Spark Plug - NGK Y-504J - 4Boats

Spark Plug Y-504J V-Groove | 4Boats

Y-504J-NGK

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£13.20
/
Tax included.

NGK nickel spark plugs feature a specially designed V-Groove centre electrode, improving ignitability for reliable starting in marine conditions. Model Y-504J is designed for marine ignition systems. This marine spark plug provides consistent performance for outboards, sterndrives and small inboards.

  • Part number: Y-504J
  • Manufacturer: NGK
  • Electrode: nickel centre with V-Groove
  • Improved ignitability for reliable starts
  • Application: marine engine ignition (outboards, sterndrives and small inboards)
  • Replacement type: consumable spark plug

Check your engine manual to confirm fitment, thread diameter, reach, heat range and recommended gap before installation. Typical marine practice is to use a resistor-type plug and to inspect for fouling or corrosion during regular maintenance to ensure reliable performance.

See related items in the Spark Plugs collection to compare options and find compatible part numbers.

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