NGK BR7HS-10 Spark Plug

The NGK BR7HS-10, stock number 1098, is a standard nickel plug with a factory preset gap. The -10 suffix is NGK's notation for that gap: 1.0mm, or 0.039 in, set at the factory so you are not guessing with a feeler gauge on a plug that does not need adjusting.

• Preset gap: 0.039 in (1.0mm).
• 14mm thread, 13/16 in hex, 1/2 in reach, gasket seat.
• Removable nut terminal, so it suits either boot style.
• Resistance: 5000 ohms.
• Solid copper core for heat dissipation, conductivity and a broad heat range, with corrosion-resistant plating.
• Replaces Mercury 33-828942, Yamaha B7H-S0000-00-00 and Evinrude/Johnson 0509568.

Documented against Mercury, Nissan, Suzuki, Tohatsu and Yamaha outboards, but check your engine and maintenance manual and fit only what the engine builder specifies. NGK heat range numbers run opposite to Champion's.