This is an exact replacement spark plug cap and wire by the original manufacturer, it is not a reproduction. It will fit either cylinder, just twist the rubber seal to fit left or right cylinder. The 25" plug wire will simply twist into the CDI box for an easy replacement. Replaces Polaris part numbers 4010477, 4010124-66, and 4010526. Sold each so order two if replacing both wire and cap assemblies. Fits the following models: 2003 Sportsman 600 2004 Sportsman 600 (Only models built before 02/23/2003) 2002-03 Sportsman 700 2004 Sportsman 700 (Only models built before 02/23/2003)