Industrial WD 06A 903 315 E Belt Tensioner Assembly

The WD 06A 903 315 E Belt Tensioner Assembly provides automatic spring‑loaded tension control for the serpentine belt in Volkswagen and Audi engine systems. Built with an industrial-grade metal housing and pulley, it installs as a direct replacement engine-mounted assembly in automotive engine accessory drive systems, maintaining belt alignment and tension for components such as the alternator, A/C compressor, water pump, and other accessory pulleys. This tensioner is intended for passenger vehicles and automotive powertrain applications, supporting reliable operation in the engine compartment during belt maintenance or replacement of worn or noisy tensioners. Common replacements include Gates DriveAlign Belt Tensioner, Litens Automatic Belt Tensioner, and Dayco Serpentine Belt Tensioner.