These Grade 8 bolts have the authentic center indent with the slots and come in the correct-length for both applications. This bolt head design prevents the fasteners from loosening due to vibration. 1963-68 water pumps have eight bolts, while 1969-77 have eleven bolts. Sold per each.
Authentic reproduction of the original GM product.
This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.