CWP-546 Duralast Water Pump CWP-546 Duralast Water Pump New. Open Box. See pictures for details. The Duralast New Water Pump features all new, original equipment-quality components for proper fit and long-life performance. Each pump includes heavy-duty unitized bearings, pressed-on hubs, precision machined housings, unitized seals and optimal impeller clearance, plus all new water pumps are 100% factory tested to assure the highest quality product. Each unit is built to meet or exceed all Original Equipment specifications and is validated for fit, form, and function. Also, application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust. (description exceeds maximum possible length)