BBC Black Powder Coated Steel Top Mount Alternator Bracket. Alternator bracket is designed to mount GM alternator on the driver's side on a big block Chevy with a short water pump. This bracket mounts to the water pump and top bolt in the head . Brackets are laser cut 1/4" steel and then powdercoated for a durable long lasting finish. It measures about 12" tall from the top water pump mounting bolt so you should double check hood clearance. We also offer matching compressor bracket (pictured). Made in the U.S.A.