This kit contains the common items that cause most running issues. Perfect to keep in your tool box, especially if taking a boating vacation. It includes 1 Throttle Position Sensor (TPS tells the emm the position of the throttle plate), 1 Crankshaft Position Sensor (CPS tells the emm where the flywheel rotation is) and the engine mounted Neutral Switch (tells the emm if its in neutral or in gear to allow RPM's to advance. This kit fits all Evinrude E-TEC 2 cylinder 15HO, 25, 30  40 50, 60 and all 3 cylinder 60HO, 75, 90hp. Please enter your model number in the comment section so we can double check all correct parts are sent.