Fits 3.3 liter 200HO, 225, 250 and 3.4 liter 250HO and 300hp E-TEC's. These are the 4 most common items that cause a running issues with these engines. Perfect kit to keep on your boat if taking a boating or fishing vacation. Includes 1 Throttle Position Sensor (TPS tells the emm where the throttle plates are) 1 Crankshaft Sensor (CPS telss the emm where the crankshaft is during rotation) 1 Oil Pressure Sensor (most common cause of a no oil warning) 1 engine mounted Shift Switch (tells emm if the unit is in neutral or in gear)  Please note your engines model number so we can be sure correct parts are sent.