Meh, depends on the spec of the hose. The hoses on my 528e s said made in W germany They were changed circa 2000 and still in good shape. 8x13mm FI hose with a rondel on it is a deal at a buck an inch. The spec is rated for probably twice what 2.5 bar it is regulated to. It is a maintenance item and a fairly easy driveway job. A copper line to a carb is a fashion statement.