NGK iridium plugs represent the ultimate evolution of spark plug technology and performance. The iridium center electrode is both stronger and harder than platinum. This tapered cut iridium center electrode reduces the voltage requirement for spark. This

Developed by the United States Power Squadrons, the world's largest private, nonprofit boating organization, Marine Amateur Radio is a complete guide to the use of ham radio for two-way and network communications among boats and between boats and shore stations. Briefly, succinctly, and clearly, thi...

Spark Plug 10/pack # 2623 Sold as Each

SP-SPARK PLUGS