Stage 8 Locking Header Bolt Kit - 3/8"-16 x 1" External 12-Point - Steel - Nickel Plated - SB Chevy - Set of 12 28315M8 Aggressive to Moderate Performance Tone

Aggressive to Moderate Performance Tone and Improves Exhaust Flow

All springs are made of ductile iron (memory metal) and are shot-peened for additional strength

Fits Rugged Radios Intercoms paired with Kenwood

water temperature and fuel pressure gauges along with internal warning lights

Stage 8 Locking Header Bolt Kit - 3/8"-16 x 1" External 12-Point - Steel - Nickel Plated - SB Chevy - Set of 12 28315M8 Aggressive to Moderate Performance ToneStage 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