OMC's part #582365 is for a "you cut to fit" plug wire kit.  You cut your length, install the spring terminals & boots and hope you get it right.  My 582365-5" plug wire is completely assembled for you to install.  Made from solid tinned copper core 7mm wire.  Crimped snap lock terminals, they are the best.  Terminals are coated with dielectric grease for corrosion protection and maximum spark.  For 2 cyl, 2-stroke motors with CD ignition and 583740 coils as shown.  Price is for (2) wires as shown, powerhead is not included.