that is the ECIS brand intake system for the 323/328 models. it is a very good intake system. i had it for years. only thing that gets worn is the black carpet on the black powdercoated metal shield. you should be able to get $100 for it easily.
i have my 323ci stock airbox that i would be willing to ship in exchange.
OE CSL WHEELS - OE CSL BRAKES - OE AUTOFLD MIRRORS - CSL TRUNK - CSL DIFFUSER - AA TUNE - AA PULLEYS - AS 40% SSK - BILSTEIN PSS9s
CF CSL LIP - NAVI - BMWPERF CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC BRKLINES, TRANS, RTABs - H&R SWAYS - 4.10 M-SPORT DIFF