It's called an axle case bracket. The entire assembly is part# 8-97131-941-1. Go to My Isuzu Parts and enter that part# to see all the small parts that available separately. The rubber bushings, # 8-97018-240-0, are cheap and available from your local Honda dealer. Your mechanic could probably have them tomorrow, if they get parts deliveries on Saturday.

http://www.myisuzuparts.com

Mark