Feature: 1. OE number: 11281433571, 1128 7512 758, fit for E46 E39 E38 E36 E53 E85 E86. 2. Made of high quality material, durable and can be used for a long time. 3. Mainly composed of fixed casing, tensioning arm, wheel body, torsion spring, rolling bearing and spring bushing. 4. According to the different tightness of the belt, the tension is automatically adjusted to make the transmission system stable, safe and reliable. 5. Its role is to adjust the tightness of the timing belt, usually replaced with the timing belt. 6. With the belt tensioner pulley, the belt runs more smoothly, the noise is small and it can prevent slipping. Specification: Condition: Brand New Item Type: Belt Tensioner Pulley Material: Engineering Plastic Color: As shown in picture OE: 11281433571, 1128 7512 758 Outer Diameter: Approx. 70mm / 2.8in Width: Approx. 26mm / 1.0in Fitment: Fit for E46 325Ci 2001-2002 Fit for E46 325i 2001-2002 Fit for E46 325xi 2001-2002 Fit for E46 330Ci 2001-2002 Fit for E46 330i 2001-2002 Fit for E46 330xi 2001-2002 Fit for E39 525i 2001-2002 Fit for E39 528i 1997-2000 Fit for E39 530i 2001-2003 Fit for E46 M3 2001-2006 Fit for E53 X5 2001-2002 Fit for E36 Z3 2001-2002 Fit for E85 E86 Z4 2006-2008 Package List: 1 x Belt Tensioner Pulley Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.