Big Block Chev 3/8"-16 Header Bolts 1.00" UHL Black Finish 12 Point Head 16 Pack

Upgrade your Big Block Chevy exhaust installation with a purpose-built bolt kit designed to handle aftermarket header work. This 16-pack of 3/8"-16 header bolts features a 1.00" UHL length and a compact 12-point head, engineered to reach tight clearance areas on aftermarket header flanges while delivering dependable torque and holding power.

Specifically for Big Block Chevy aftermarket headers

These bolts are tailored for Big Block Chevy applications where factory fasteners may fall short—whether you’re dealing with thicker flange profiles or replacing damaged fasteners encountered during header installation. Replace like-for-like with a bolt that respects the unique demands of high-heat exhaust environments and aftermarket flange geometries.

Key specifications

• Thread size: 3/8"-16
• Length: 1.00" UHL
• Head type: 12-point, compact design for restricted spaces
• Pack size: 16 bolts

Material and finish you can trust

• Material: Chrome moly (8740) steel for high-strength performance
• Finish: Black oxide coating provides corrosion resistance and a durable look

Why choose these bolts

• High-strength alloy (8740 chrome moly) stands up to the stresses of exhaust header installation and operation
• Black oxide finish enhances corrosion resistance while maintaining a clean, discreet appearance on the engine bay
• 1.00" UHL length and 12-point head optimize engagement in tight spaces near header flanges
• Pack of 16 bolts ensures you have ample fasteners to complete the job with replacements on hand if needed

Applications and benefits

Ideal for aftermarket Big Block Chevy header installs where original bolts may not suffice due to flange thickness, clearance constraints, or prior damage. This kit helps ensure a secure fit, reliable torque retention, and a cleaner installation path in confined engine compartments.