NGK Spark Plugs - #7164 - TR55IX Mercury-300HP-Verado-6-CYL-2023 IPX7-rated structural casing designed to

IPX7-rated structural casing designed to withstand heavy downpours and float on the surface for fast recovery if dropped over the gunwale

Strength to lower and hold even the largest tabs in place

Prewired with automatic float switch(with Manual Over-ride Operation)

Simplifies future valve replacement

Its rugged design will provide years of reliable service even in the most challenging saltwater applications

NGK Spark Plugs - #7164 - TR55IX Mercury-300HP-Verado-6-CYL-2023 IPX7-rated structural casing designed toDesigned specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. Fine tipped iridium center electrode ensures high durability and consistently stable spark Iridium alloy with an extremely high melting point Tapered ground electrode maximizes fuel burn Outstanding acceleration, high fuel efficiency and durability Ultimate design, technology and performance Sold in