This is a Brand New Aluminum Upper Water Pump pulley. This is a Single groove pulley designed for your Small Block Chevy 283 - 350 with a Short Water Pump. This has a 6.6" Diameter and 1.75" Mounting bolt Circle. Constructed of thick gauge aluminum and with a high quality Satin Aluminum finish, this kit would be great addition to your project.

This listing also includes brand new water pump bolts for your aluminum pulleys. These aluminum bolts measure 5/16-24 x 3/4".