Alternator O/R Pulley (Volkswagen Golf IV / V / VI / Polo 9N / Audi A1 8X / A3 8P / A4 B7 / TT 8N) is a mechanical component designed to work with the alternator system on several Volkswagen and Audi models. This pulley plays a critical role in transferring the rotational movement from the engine’s drive belt to the alternator, enabling it to generate electrical power for the vehicle’s battery and electrical systems while the engine runs.
The pulley is made specifically for fitment on Volkswagen Golf (generations IV, V, VI), Polo 9N, and Audi A1 8X, A3 8P, A4 B7, and TT 8N models. When replacing this part, it’s important to compare the old pulley visually and dimensionally with this unit, ensuring compatibility with your vehicle’s alternator and belt setup. Mismatched pulleys may cause improper belt tension or noise, which can affect the charging system’s performance.
Careful selection based on exact vehicle model and engine specification is recommended, as this part is tailored for these specific Volkswagen and Audi vehicles. If you’re uncertain about the fitment or compatibility, contacting a professional or submitting a request for confirmation can safeguard your purchase decision. Using the correct alternator pulley helps maintain the proper function of your vehicle’s charging system and overall electrical reliability.
If this repair may need matching clips, brackets, lights, panels or more than one part, check more Alternator, Quick Repair Bundle or Request a Part before ordering.





