Genuine belt tensioner OE 06H903133G for VW and Audi 2.0 TSI engines. Maintains correct belt tension for alternator, A/C and power-steering systems. Fits Audi A4, A5, Q5 and VW models using 2.0 TSI engines (verify engine code and VIN). Perfect OEM replacement for noisy, slipping or worn tensioners. Durable, reliable and built to factory standards. Delivery available.