Home / Appliance / Parts / Pump Start Capacitor U18-525 Pump Start Capacitor U18-525$52.00 Price may not be up-to-date. In Stock View Product Part Number: U18-525 Brand: STA-RITE INDUSTRIES Seller: Sears PartsDirect Categories: Appliance, Parts 60-day return policy Description This start capacitor (part number U18-525) is for pumps. Start capacitor U18-525 briefly increases the voltage to the motor to help the motor start. Disconnect electrical power before installing this part.