4F2 819 371 K · Heating hose Audi genuine (OEM) part number 4F2 819 371 K, Heating hose. Fitted on (3)HOSE — pos 6A · BLB (KAT448.BIN)HOSE — pos 6A (KAT448.BIN)HOSE — pos 6A (KAT648.BIN) Open the interactive exploded diagram →