The Continental Accessory Drive Belt Kit - 459278 is a comprehensive kit of products designed to replace and maintain the accessory drive belt system in a car. This kit includes four main components: a drive belt, a tensioner, an idler pulley, and a water pump. The drive belt is a critical component that powers various systems in the car, such as the alternator, power steering, and air conditioning. The tensioner and idler pulley help to keep the belt in place and properly tensioned, ensuring smooth operation. The water pump is responsible for circulating coolant throughout the engine to prevent overheating. This kit is essential for ensuring the proper functioning and longevity of the car's accessory drive belt system.