The Marine Spark Plug MR43T is designed for reliable ignition and consistent performance in marine engines. Featuring a copper core and nickel alloy electrode, it supports efficient combustion and effective heat dissipation. Engineered for marine applications, the MR43T helps provide smooth engine operation and dependable cold starts. Features & Benefits: Copper core supports efficient heat transfer and consistent spark Nickel alloy electrode designed for durability and stable performance Pre-gapped for easy and precise installation Supports smooth idle and reliable cold-start performance in marine engines Specifications: Brand & Part Number: MR43T Material: Copper Core with Nickel Alloy Electrode Thread Size: 14mm Reach: 0.75 in. (19mm) Gap: Pre-gapped (~0.035 in.) Optimize marine engine performance with MR43T spark plugs.