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Header bolts clamp your exhaust headers to the cylinder heads. That joint sees constant heat cycling and vibration, which can stretch or loosen weak fasteners over time. The result is often an exhaust leak, a ticking noise at idle or a blown gasket. Many enthusiasts replace the stock hardware when they install new headers or chase a persistent leak. They choose bolts designed to hold clamping force through repeated heat cycles.
In Exhaust › Header Bolts we currently have 5 in-stock products, all from ARP. Examples include the ARP Chevy LS 1/4in Flange Hex Header Bolt Kit and the ARP Chevy LS 3/8in Flange Hex Header Bolt Kit, both listed for Chevrolet LS applications.
A few things to check before you choose:
Confirm the kit matches your engine and cylinder heads, since thread and length needs vary.
Check your header flange thickness so the bolts engage fully without bottoming out.
Consider the head style and the wrench clearance around tight header tubes.
Follow the manufacturer's torque and lubricant instructions, and recheck the bolts after the first few heat cycles.
To narrow the list, pick your vehicle to see what fits.
Header bolts clamp your exhaust headers to the cylinder heads. That joint sees constant heat cycling and vibration, which can stretch or loosen weak fasteners over time. The result is often an exhaust leak, a ticking noise at idle or a blown gasket. Many enthusiasts replace the stock hardware when they install new headers or chase a persistent leak. They choose bolts designed to hold clamping force through repeated heat cycles.
In Exhaust › Header Bolts we currently have 5 in-stock products, all from ARP. Examples include the ARP Chevy LS 1/4in Flange Hex Header Bolt Kit and the ARP Chevy LS 3/8in Flange Hex Header Bolt Kit, both listed for Chevrolet LS applications.
A few things to check before you choose:
Confirm the kit matches your engine and cylinder heads, since thread and length needs vary.
Check your header flange thickness so the bolts engage fully without bottoming out.
Consider the head style and the wrench clearance around tight header tubes.
Follow the manufacturer's torque and lubricant instructions, and recheck the bolts after the first few heat cycles.
To narrow the list, pick your vehicle to see what fits.
