For your safety the part should be fitted by a qualified professional as indicated by the product guidelines.
LUK 532041810 Guide Pulley
Ina Deflection/Guide Pulley, V-Ribbed Belt 532 0860 10
Ina Deflection/Guide Pulley, V-Ribbed Belt 532 0934 10
INA Deflection Guide Pulley Fits Mercedes-Benz Audi + Other Models
LUK INA Deflection / Guide Pulley v-ribbed belt for OPEL VAUXHALL SAAB VOLVO
INA 532041810 V-Ribbed Belt Deflection/Guide Pulley Replacement Fits BMW