ARP 100-1201 Black Oxide 12-Point Header Bolts - Set of 12

ARP 100-1201 header bolt kit delivers the strength and reliability needed for secure exhaust header installation. Manufactured entirely in-house from heat-treated 8740 chrome moly steel, these fasteners feature a black oxide finish and are rated at an impressive 170,000 psi tensile strength—significantly stronger than Grade 8 hardware. This exceptional strength ensures your headers stay securely fastened even under extreme heat and vibration conditions.

Key Features:

• 8740 chrome moly steel construction with black oxide finish for corrosion resistance
• 170,000 psi tensile strength exceeds Grade 8 specifications
• Compact 12-point head design for easy access in tight spaces
• 3/8" diameter with 0.750" under head length
• Set includes 12 bolts plus premium-quality washers
• Manufactured and heat-treated in-house for consistent quality control

The 12-point head design makes these bolts ideal for hard-to-reach header mounting locations where standard hex heads won't fit. Each kit includes premium washers to ensure proper load distribution and prevent damage to header flanges. ARP's commitment to controlling every aspect of manufacturing—from raw material to finished product—ensures you receive fasteners with the quality and consistency demanded by professional engine builders and performance enthusiasts.