Why Header Bolts Fail (And Why These Don’t)

OEM bolts are:

• Weak
• Prone to heat cycling failure
• Known to loosen over time

ARP fixes all of that with race-proven materials and design.

What You Get:

• Black oxide chromoly steel for high heat durability
• 12-point head design for better tool access (tight engine bays = pain)
• Wide flange head for improved load distribution
• Superior clamping force to keep headers sealed

Translation: install once, stop dealing with it.

ARP’s premium grade header bolt kit is a wonderful choice to facilitate the installation of your vehicle’s exhaust headers. To deal with a reputation for “zero defects”, make certain optimum quality keep watch over, and produce fasteners of exceptionally top of the range,

Vehicle Fitment (GM LS Applications)

The ARP 100-1107 kit is designed for GM LS engine platforms, including:

Chevrolet / GM:

• Silverado / Sierra (4.8L, 5.3L, 6.0L LS-based engines)
• Camaro SS (LS1, LS2, LS3)
• Corvette (C5, C6 LS engines)
• Tahoe / Suburban / Yukon

Common Swap Applications:

• LS-swapped Nissan 240SX
• LS-swapped BMW E36/E46
• LS-swapped Mazda RX-7
• Basically anything you decided to LS swap because… of course you did

ARP controls all aspects of the manufacturing process, performing all operations in-house where they are able to be closely monitored.

Key Features

• Material: Black oxide chromoly steel
• Head Style: 12-point with wide flange
• Finish: Corrosion-resistant black oxide
• Quantity: Set of 12 bolts
• Application: Exhaust manifold / header mounting

Performance Benefits

• Prevents header leaks under heat cycles
• Maintains consistent clamping force
• Reduces need for constant re-tightening
• Improves long-term exhaust sealing

No more crawling under your car every two weeks wondering why it sounds like a tractor.

ARP takes odd steps to produce the very finest products in their kind available on the market lately. Manufactured from heat treated 8740 chrome moly steel with a black oxide finish, these bolts are rated at 170,000 psi tensile strength, which is substantially stronger than Grade 8 hardware. The 3/8″ diameter bolts are traditional hex style, have a .750 under head length, and the 12 piece set includes premium-quality washers.

Premium grade bolt kit to facilitate installation of exhaust headers
Rated at 170,000 PSI, which is considerably stronger than Grade 8 hardware
Bolts are 3/8″ in diameter and have a .750 under head length; 12 pieces
Manufactured from black oxide finished chrome moly steel
Heads are traditional hex style, and premium-quality washers are included

Installation Notes

• Use a 12-point socket for proper engagement
• Apply anti-seize (heat + steel threads = bad decisions otherwise)
• Torque evenly across all bolts
• Re-check after initial heat cycle (just once—not every weekend)

Why ARP?

Because ARP hardware is:

• Proven in racing
• Engineered for extreme environments
• The difference between “done right” and “done twice”

Final Verdict

The ARP 100-1107 Header Bolt Kit is one of those upgrades that saves you time, frustration, and future headaches.

It’s not flashy—but it’s the reason your headers stay sealed while everyone else is chasing exhaust leaks.