How to swap BMW Series 3 Coolant Tank Expansion?

RADIATOR COOLANT EXPANSION HEADER
BMW Series 3
E90

Compatibility:
BMW 3 Series 2007 Diesel Convertible 320Cd RWD -- E46 1995cc 110KW 150HP M47 D20 (204D4)
BMW 3 Series 2007 Diesel Convertible 330Cd RWD -- E46 2993cc 150KW 204HP M57 D30 (306D2)
BMW 3 Series 2007 Petrol Convertible 318Ci RWD -- E46 1995cc 105KW 143HP N42 B20 A;N46 B20 A
BMW 3 Series 2007 Petrol Convertible 320Ci RWD -- E46 2171cc 120KW 163HP M54 B22 (226S1)
BMW 3 Series 2007 Petrol Convertible 320Ci RWD -- E46 2171cc 125KW 170HP M54 B22 (226S1)
BMW 3 Series 2006 Diesel Convertible 320Cd RWD -- E46 1995cc 110KW 150HP M47 D20 (204D4)
BMW 3 Series 2006 Diesel Convertible 330Cd RWD -- E46 2993cc 150KW 204HP M57 D30 (306D2)
BMW 3 Series 2006 Diesel Coupe 320Cd RWD -- E46 1995cc 110KW 150HP M47 D20 (204D4)
BMW 3 Series 2006 Diesel Coupe 330Cd RWD -- E46 2993cc 150KW 204HP M57 D30 (306D2)
BMW 3 Series 2006 Petrol Convertible 318Ci RWD -- E46 1995cc 100KW 136HP N42 B20 A;N46 B20 A
BMW 3 Series 2006 Petrol Convertible 318Ci RWD -- E46 1995cc 105KW 143HP N42 B20 A;N46 B20 A
BMW 3 Series 2006 Petrol Convertible 318Ci RWD -- E46 1995cc 110KW 150HP N46 B20 A;N46 B20 C
BMW 3 Series 2006 Petrol Convertible 320Ci RWD -- E46 2171cc 120KW 163HP M54 B22 (226S1)
BMW 3 Series 2006 Petrol Convertible 320Ci RWD -- E46 2171cc 125KW 170HP M54 B22 (226S1)
BMW 3 Series 2006 Petrol Convertible 325Ci RWD -- E46 2494cc 141KW 192HP M54 B25 (256S5)
BMW 3 Series 2006 Petrol Convertible 330Ci RWD -- E46 2979cc 170KW 231HP M54 B30 (306S3)
BMW 3 Series 2006 Petrol Convertible M3 RWD -- E46 3246cc 252KW 343HP S54 B32 (326S4)
BMW 3 Series 2006 Petrol Coupe 330xi AWD -- E46 2979cc 170KW 231HP M54 B30 (306S3)
BMW 3 Series 2006 Petrol Coupe 316Ci RWD -- E46 1596cc 77KW 105HP M43 B16 (164E3)
BMW 3 Series 2006 Petrol Coupe 316Ci RWD -- E46 1596cc 85KW 115HP N45 B16 A