Roots Style Supercharger Blower Case Pressure Relief Valve Speedmaster aluminum Water Pump pulleys

Speedmaster aluminum Water Pump pulleys are manufactured from 356 aluminum that is heat-treated to T-6 specs

The outer cases made from 8620 Chrome-Nickel-Moly steel and the case hardened for long life and improved strength

Their one-piece design allows for improved flow and eliminates two potential leak points (brazed joints)

Designed for Speedmaster starters

and their quality construction and superior materials will help to protect your vital engine parts from the harmful effects of friction

Roots Style Supercharger Blower Case Pressure Relief Valve Speedmaster aluminum Water Pump pulleysAluminum pressure relief valve for 6 71, 8 71, & 10 71 applications.