OE NO.: 11281433571. OTHER PART NUMBERS: 11281433571, 11 28 1 433 571. This part may also be known as: New BMW E46 325 E39 530 E53 X5 AC Serpentine Belt Tensioner w Pulley 11281433571. INTERCHANGE PART NUMBERS: FS27120, 38224, 49311, 89343, Tension Pulley, Belt Tensioner, Tensioner Pulley, Tensioner, Adjusting Pulley 112812.
