Complete Metering Pump assembly including pump head, motor, capacitor, coupling and housing for new style pump for model CB 1400 / CB 140 / CB 1500 waste oil furnace. Meters the exact amount of oil needed for the CB 1400 / CB 140 / CB 1500 furnace. It eliminates the need to adjust the oil for different viscosities. The CB 1500 furnace can also use the metering pump for the CB 1750 for extra BTU's. Do not try this with other sizes. This switch was approved by the factory and applies to the CB 1500 upgrading to the CB 1750 metering pump only.