Why Upgrade to ARP Header Bolts?
Because factory bolts + heat cycles = eventually loose, rusty, and annoying.
ARP header bolts are engineered to maintain consistent clamping force under extreme heat, reducing the chances of exhaust leaks, warped flanges, and broken hardware.
ARP 400-1207 stainless header bolt kit 12 point – Key Features
- Stainless 300 Construction
Superior corrosion resistance and durability in high-heat exhaust environments. - 12-Point Head Design
Easier access in tight engine bays and more precise torque application. - High-Strength Fasteners
Built to handle repeated heat cycles without loosening or failing. - Precision Rolled Threads
Ensures smooth installation and accurate torque retention. - Pack of 12 Bolts
Ideal for most header installations depending on your setup.
ARP’s premium grade header bolt kit is a superb choice to facilitate the installation of your vehicle’s exhaust headers. To take care of a reputation for “zero defects”, ensure optimum quality regulate, and produce fasteners of exceptionally top of the range, ARP controls all aspects of the manufacturing process, performing all operations in-house where they may be able to be closely monitored.
Ideal Applications
- Exhaust header installation and upgrades
- Small block and LS engine setups
- Street, track, and boosted applications
- Replacement for worn or failing header bolts
If you’re tired of re-tightening headers every few weeks, this is your fix.
ARP takes strange steps to produce the very finest products of their kind available on the market these days. Manufactured from ARP’s proprietary steel alloy “Stainless 300” and polished to produce a beautiful finish, these components are tolerant of heat, virtually impervious to rust and corrosion, and they’re rated at 170,000 psi tensile strength, which is substantially stronger than Grade 8 hardware.
Why It Matters
Cheap header bolts can lead to:
- Exhaust leaks over time
- Bolts loosening from heat cycles
- Corrosion and seized hardware
The ARP 400-1207 kit eliminates those issues with stronger materials and better clamping consistency, keeping your exhaust sealed and your engine bay headache-free.
Installation Notes
- Use anti-seize with stainless bolts
- Torque evenly across all bolts
- Re-check torque after initial heat cycles
Translation: install them once, do it right, and move on with your life.
The 3/8″ diameter bolts are a compact 12-point style that are great for tight, hard-to-reach areas, 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 polished Stainless 300 steel, a proprietary alloy that may be impervious to rust and corrosion
Heads are compact 12-point style, and premium-quality washers are included
Final Verdict
The ARP 400-1207 Stainless 300 Header Bolt Kit is a simple upgrade that solves a very annoying problem. Better materials, better design, and way less chance of dealing with exhaust leaks later.
Not flashy—but extremely effective.
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