Nobody likes water leaks. And here's ARP's contribution to the solution. These premium grade bolts are engineered to properly engage the manifold threads and resist loosening. They're application-specific, and come in your choice of black oxide finished chrome moly or rust-proof stainless steel, with handy 12-point or standard hex heads. Washers included.
        
      - Style:
 - Bolt
 - Head Style:
 - 12-point
 - Underhead Length (in.):
 - 1.000 in. / 2.000 in.
 - Washers Included:
 - Yes
 - Material:
 - Stainless steel
 - Finish:
 - Polished
 - Quantity:
 - Sold as a set of 3.
 - Special Attention:
 - Anti-seize should be used on all stainless steel fasteners.
 - Make:
 - Chevrolet
 - Engine Family:
 - Chevy big block Mark IV
 - Engine Sizes:
 - 6.5L/396-7.4L/454
 - Years:
 - 1966-1990
 - Engine Family:
 - Chevy small block Gen I
 - Engine Sizes:
 - 4.3L/262-6.6L/400
 - Years:
 - 1955-1985