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NGK Spark Plug BR6FS Mercury/Mercruiser 33-59571

In stock
Marine Parts

NGK BR6FS Spark Plug

The NGK BR6FS Spark Plug is a standard NGK plug. NGK Standard plugs are an OE cornerstone that have provided decades of reliable performance. The solid copper core offers superior heat dissipation, conductivity, and broad heat range. This plug is treated with corrosion-resistant plating to ensure ease of installation and removal. 

NGK Standard spark plugs provide reliable performance and are engineered specifically for OE applications.

  • Part Number: BR6FS
  • Stock Number: 4323
  • Resistance (Ohm): 5000
  • Ground configuration: Standard
  • Ground electrode core material: Nickel
  • Centre electrode core material: Copper
  • Centre electrode tip material: Nickel

Fits Indmar - to 1997, Kodiak - 1999-2000, Marine Power - 1975-2000, 2000-2006 Mercruiser, 1982-1993 OMC

Check your engine and maintenance manual for the correct spark plug and only use as recommended by your engine's original equipment manufacturer. Using the wrong plug can reducing optimum performance, reduce fuel economy or cause damage to your engine.


  • Quicksilver / Mercury 33-59571B
  • Yamaha BR6-FS000-00-00
  • Evinrude / Johnson 0509573, 0503708

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