Stage 8 Locking Header Bolt Kit - 3/8"-16 x 1" Double Hex Head - Nickel Plated - Steel - SB Ford - Set of 16 DX2130K The unique bell-mouthed runner entrances

The unique bell-mouthed runner entrances maximize airflow and minimize shrouding - all while optimizing the available plenum volume for an unobstructed flow path over opposing runners

Clears All Headers

Cylinder Head Porting Kit

GM/Mercury Marine 1050 Gen-IV Big Block V8

Stage 8 Locking Header Bolt Kit - 3/8"-16 x 1" Double Hex Head - Nickel Plated - Steel - SB Ford - Set of 16 DX2130K The unique bell-mouthed runner entrancesStage 8 locking header bolts use a patented system that consists of a Grade 8 quality grooved hex head bolt, a retainer, and a snap clip. a retainer fits over the bolt head and locks the bolt against the header tube, and the snap clip holds the retainer in place. Once Stage 8 header bolts are tightened down, they won't back out, eliminating leakage and blown header gaskets from loose bolts. Made in the U. S. A. Stage 8 Locking Fasteners has provided