genuine mercedes-benz relay 170-545-03-05 part can be found as #8 in the diagram above genuine mercedes-benz parts product description 2001-04, engine management, 3.2l. Specifications brand mercedes-benz manufacturer part number 170-545-03-05 sku 170-545-03-05 product genuine mercedes-benz relay 170-545-03-05 replaces 170-545-03-05-05 only part reference #8 on the diagram is included terms and conditions