noise or air

hey i just got a bmw 532i and i see there is a hose with cracks in it the revs are not steady here is a pic can anyone tell me what the part number is or where i can pick one up am new to the bmw world i will try answer everything i can thanks

hi there, new on here, my partner went into labout last mth and i rushed home at about 120mph, (bad i know), well when i got her to hospital i could smelt burning. so next day checked under the hood to find there was a rattly noise coming from a black casing situated on the side of the engine. i...