AUQDD 39389 Belt Tensioner and Pulley Assembly For 30L Turbo N55B30A Fit For BMW 335i 435i 535i 640i 740i 740Li GT xDrive 1416 M235i 1618 M2 1117 X3 1518 M3 X4 M41118 X5 1119 X6

FEATURES Easy to install by direct replacementEliminate noisy tensioner pulley and no more belt noiseEnsures proper belt tensionalignment and damping for superior performance FUNCTION The replacement automatic serpentine belt tensioner pulley assembly transports power to the alternatorpower steering pumpair conditioning and keeps it running smoothly and effectivelyIt is designed for vehicles that needs an automatic belt tensionerThe torsional round spring design provides consistent tension for maximum durability OE QUALITY Manufactured in ISOTS16949 certified facilities by the advanced machines and each part is built to stringent OE specificationsStable characteristicsHigh reliability PERFECT FIT Engineered and tested to match the fitfunction and performance of the original tensioner on specified vehiclesIt ensures proper belt tension alignment and damping for superior performanceEasy to install by direct replacement PLEASE NOTE Before placing the order Please refer to the Vehicle menu amazonconfirmedfit at the top left corner select your vehicles Year Make Model and click Check Fitto make sure the parts fit your car or check the product page description to make sure it matches exactlyAny questions please free to contact us and you will get a satisfactory solution