Alternator Regulator IB545 Aluminum Alloy for BMW 323 328 528 Series Generator Replacement Features： 1、OE Number: The referencing OE number of this voltage regulator are IB545, 1197311557, which is molded and designed depend on the original data. 2、Fitment: The generator regulator is a replacement for 323 SERIES 2.5L ENGINE 2000, 328 SERIES 2.8L ENGINE 2000, 528 SERIES 2.8L ENGINE 1998‑2000. 3、Function: The alternator voltage regulator could provide a stable voltage for the battery, and improve the ignition efficiency of the engine, enhance engine power, increase speed. 4、Premium Material: The voltage regulator is made sturdy ABS and aluminium alloy material, which is tough and rugged, impact resistant, wear proof, and durable. 5、Easy to Install: Stringently manufactured to meet the original standard, good replacement for the old or broken one, improving the time efficiency. Specification： Item Type: Alternator Voltage Regulator OE Number: 1197311557, IB545 Material: ABS, aluminium alloy Fitment: Fits for 323 SERIES 2.5L ENGINE 2000 Fits for 328 SERIES 2.8L ENGINE 2000 Fits for 528 SERIES 2.8L ENGINE 1998‑2000 Fits for 12-31-7-501-690 , 12-31-1-432-964 , 12-31-1-702-927 , 12-31-1-713-491 Alternator Replacement for BOSCH 1-197-311-506, 1-197-311-516, 1-197-311-536, 1-197-311-545, 1-197-311-557 Alternator Replacement for LESTER 13356, 13729, 13734, 13761, 13774, 13830, 13838, 13897 Alternator Package List： 1 x Regulator