NGK LKAR7C-9 93961 Nickel Spark Plug for Mercury 450R/500R

NGK replacement spark plugs for Mercury 250R, 300R, 450R, and 500R outboard engines. Sold individually.

• The description claims longer life and optimum performance.
• The description claims trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
• The description claims corrugated ribs prevent flashover.
• The description claims a pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
• The description claims a copper core aids in heat removal.
• The description claims triple seals prevent leakage.