The Dayco Top Cog V-Belt 15405 is a high-quality replacement accessory belt designed specifically for 1978-1987 Buick Regal vehicles. Made with durable materials, this black V-belt features a unique top cog design that provides increased belt strength and performance. With a height of 2 inches and a length of 15 inches, this Dayco belt is compatible with the manufacturer part number 15405 and is a reliable choice for ensuring smooth and efficient operation of your vehicle's engine.