SHOP Quicksilver Spark Plug LFR5A-11

A well-tuned engine starts with the right spark, and the Mercury Quicksilver Spark Plug Champion LFR5A-11 (33-859495Q) delivers exactly that. Designed to handle the unique demands of marine engines, this spark plug ensures smooth starts, efficient combustion, and consistent power on the water. Whether tackling long-haul runs or quick trips to the dock, a reliable ignition system keeps your engine performing at its best.

Built with high-grade materials, this plug resists corrosion and wear from exposure to fuel, moisture, and heat. The V-cut center electrode enhances ignitability, providing a strong, clean burn that helps maintain fuel efficiency and reduces emissions. Designed to meet Mercury’s exacting standards, it’s a direct fit for various outboard motors, making installation hassle-free.