starting motor question

i have a 17 hp briggs & stratton intek v twin engine and the starting motor bendix broke. i did not see any numbers on the starting motor but on the bracket i see these numbers on the bendix side it is 9807015m and on the back of that bracket it is 28154. are these bracket number issued to particular motors so if i find a motor with that same number it is good to use it? i looked all over the mower and the engine and i just do not see any data tags or numbers. seems they must be some on there somewhere but i just don't see them. so i'm asking if the bracket number may help to id the motor? thanks the mower is a rider it says yardman mtd on the decals and the number i find are on the floor and they tell me the attachments this mower will take. and the only number i found was on the axle that one was 618-0307 s# q-004500 . but my guess is that axle was used on number of machines. thanks for any help you can provide. bp

starting motor question